http://packetpushers.net Too Much Networking Would NEVER be Enough Wed, 22 May 2013 11:57:33 +0000 en-US hourly 1 http://wordpress.org/?v=3.5.1 Too Much Networking Would NEVER be Enough Packet Pushers Podcast no Packet Pushers Podcast myetherealmind@gmail.com myetherealmind@gmail.com (Packet Pushers Podcast) Copyright Thropos Ltd 2012 Too Much Networking Would NEVER be Enough cisco, network, ccie, routing, switching, data, packet, security, ccnp, ccna, networking, routing, hp, juniper http://packetpushers.net/wp-content/uploads/2011/05/packetpusher.net-logo-v1-600-600.png http://packetpushers.net TV-14 Weekly http://packetpushers.net/shopping-at-the-sdn-app-store-what-enterprises-really-want/ http://packetpushers.net/shopping-at-the-sdn-app-store-what-enterprises-really-want/#comments Tue, 14 May 2013 12:10:55 +0000 Ethan Banks http://packetpushers.net/?p=6215 http://packetpushers.net/shopping-at-the-sdn-app-store-what-enterprises-really-want/feed/ 2 http://packetpushers.net/show-147-avaya-fabric-connect-makes-multicast-simple-really-sponsored/ http://packetpushers.net/show-147-avaya-fabric-connect-makes-multicast-simple-really-sponsored/#comments Mon, 13 May 2013 16:50:40 +0000 Ethan Banks http://packetpushers.net/?p=6138 http://packetpushers.net/show-147-avaya-fabric-connect-makes-multicast-simple-really-sponsored/feed/ 0 avaya fabric connect,multicast routing,paul unbehagen,shortest path bridging For many network engineers, IP multicast routing is evil. Difficult to design, complicated to implement, painful to troubleshoot and challenging to scale, multicast routing is rarely implemented on a given network unless it's absolutely required. For many network engineers, IP multicast routing is evil. Difficult to design, complicated to implement, painful to troubleshoot and challenging to scale, multicast routing is rarely implemented on a given network unless it's absolutely required. Most engineers would just rather not bother until the issue is forced upon them. Blame PIM. Blame RPF checks. Blame redundant rendezvous points. Blame inscrutable mroute tables. Blame whatever you like, but then realize that more and more often, multicast routing is as an actual need for production networks. Take VXLAN - it needs multicast routing, at least when implemented according to the spec. Or Cisco's OTV - in its first iteration, it required multicast routing. And of course, there are lots and lots of applications that require multicast routing so that destinations can receive multicast streams from hops-away sources. Legitimate use cases haven't made multicast routing any less of a pain in the backside to implement, and Avaya has put together an interesting solution to address this concern. With Fabric Connect (Avaya's SPB implementation), deploying multicast routing is a whole lot simpler than what network engineers are used to. Chief Architect for Avaya Networking Paul Unbehagen and Darren Giacomini, Network Architect for Schneider Electric's Pelco division, join the Packet Pushers to talk through how multicast routing over Fabric Connect works. Paul is a big part of the standardization process for SPB - he knows SPB inside and out. Darren is an Avaya customer who uses Fabric Connect to scale massive multicast IP surveillance networks. Yeah, it's an Avaya-sponsored podcast, but it's not simply marketing blah-blah. This is a technical conversation with two people very close to the technology. We keep it nerdy. You'll learn something about multicast routing, and you'll learn something about shortest path bridging. Enjoy. LINKS Show 44 – The Case for Shortest Path Bridging | packetpushers.net Show 136: Avaya – Considerations for Turning Your Network Into an Ethernet Fabric – Sponsored | packetpushers.net Avaya IP Multicast for the Cloud | youtube.com The New World of IP Multicasting | avaya.com   Packet Pushers Podcast no 38:41 http://packetpushers.net/a-data-center-delivers-apps-so-shouldnt-we-monitor-app-delivery/ http://packetpushers.net/a-data-center-delivers-apps-so-shouldnt-we-monitor-app-delivery/#comments Sat, 27 Apr 2013 20:45:17 +0000 Ethan Banks http://packetpushers.net/?p=5941 http://packetpushers.net/a-data-center-delivers-apps-so-shouldnt-we-monitor-app-delivery/feed/ 19 http://packetpushers.net/show-144-open-eigrp-with-russ-white-ciscos-donnie-savage/ http://packetpushers.net/show-144-open-eigrp-with-russ-white-ciscos-donnie-savage/#comments Sat, 20 Apr 2013 16:31:22 +0000 Ethan Banks http://packetpushers.net/?p=5885 http://packetpushers.net/show-144-open-eigrp-with-russ-white-ciscos-donnie-savage/feed/ 11 donnie savage,ieft,open eigrp,routing,russ white EIGRP is a distance vector routing protocol that for many years was unique to Cisco networking environments. Created and championed by Cisco, it didn't get any traction in the standards bodies in the early days, EIGRP is a distance vector routing protocol that for many years was unique to Cisco networking environments. Created and championed by Cisco, it didn't get any traction in the standards bodies in the early days, because there were already enough interior gateway routing protocols around according to some. EIGRP just didn't interest enough of the right folks to get it on the standards track. Fast forward to today, and Cisco has been able to publish EIGRP as an informational IETF draft known popularly as Open EIGRP. Two of the authors of that draft, Donnie Savage with Cisco and Russ White, join Ethan Banks on the Packet Pushers podcast for a discussion of Open EIGRP in this show. We talk through a number of issues. Why did Cisco open EIGRP up? Why did Cisco hold back on stub? What's the reaction of the community been? What non-Cisco vendors are interested in EIGRP? Are we going to see an open-source implementation of EIGRP now? And perhaps most cynically of all...what's in it for Cisco? LINKS Open EIGRP IETF Draft Text (ietf.org) Cisco Open EIGRP Informational Draft FAQ (cisco.com) Why is Cisco Bothering with "Open" EIGRP? (Anthony Burke, packetpushers.net) Thoughts on Open EIGRP (Russ White, packetpushers.net) Packet Pushers Podcast no 42:29 http://packetpushers.net/cisco-nexus-port-inactive-status/ http://packetpushers.net/cisco-nexus-port-inactive-status/#comments Thu, 18 Apr 2013 19:14:14 +0000 Ethan Banks http://packetpushers.net/?p=5876 http://packetpushers.net/cisco-nexus-port-inactive-status/feed/ 4 http://packetpushers.net/ccie-security-v4-reading-list-update-from-the-program-manager/ http://packetpushers.net/ccie-security-v4-reading-list-update-from-the-program-manager/#comments Sat, 13 Apr 2013 01:08:35 +0000 Ethan Banks http://packetpushers.net/?p=5746 http://packetpushers.net/ccie-security-v4-reading-list-update-from-the-program-manager/feed/ 3 http://packetpushers.net/show-143-anuta-networks-demonstrates-ncloudx-controller-sponsored/ http://packetpushers.net/show-143-anuta-networks-demonstrates-ncloudx-controller-sponsored/#comments Wed, 10 Apr 2013 14:44:54 +0000 Ethan Banks http://packetpushers.net/?p=5735 http://packetpushers.net/show-143-anuta-networks-demonstrates-ncloudx-controller-sponsored/feed/ 1 anuta networks,cloud provider,controller,iaas,ncloudx,orchestration,SDN On March 26, 2013, the Packet Pushers held a sponsored webinar with Anuta Networks to introduce their nCloudX controller to our networking community. - In the webinar, the Anuta team covers the following: A bit about their background, On March 26, 2013, the Packet Pushers held a sponsored webinar with Anuta Networks to introduce their nCloudX controller to our networking community. In the webinar, the Anuta team covers the following: A bit about their background, the problems they are going after, and how nCloudX addresseses these challenges. An explanation of the nCloudX architecture, so you'll understand how it fits into your environment. You'll want to take special note of the discussion around the slide that shows up about 8 minutes in, seen below. A demonstration of some of the major tools in nCloudX, including the service design and delivery engines. A demonstration of nCloudX interacting with both OpenStack and VMware vCloud Director. These were LIVE DEMOS with real working software done during the webinar event while the audience watched. Along the way, Packet Pushers co-hosts Greg Ferro and Ethan Banks discuss major points with presenters Nat Chidambaram, CCIE #5792 & Director of Product Management and Reddy Bhupathi, CCIE #22151 & Principal Architect. Packet Pushers Podcast no http://packetpushers.net/upgrading-f5-bigip-ha-pair-from-v10-to-v11-ethans-notes/ http://packetpushers.net/upgrading-f5-bigip-ha-pair-from-v10-to-v11-ethans-notes/#comments Wed, 10 Apr 2013 01:22:12 +0000 Ethan Banks http://packetpushers.net/?p=5728 http://packetpushers.net/upgrading-f5-bigip-ha-pair-from-v10-to-v11-ethans-notes/feed/ 5 http://packetpushers.net/handling-tech-support-interaction-effectively/ http://packetpushers.net/handling-tech-support-interaction-effectively/#comments Wed, 27 Mar 2013 13:45:40 +0000 Ethan Banks http://packetpushers.net/?p=5448 http://packetpushers.net/handling-tech-support-interaction-effectively/feed/ 6 http://packetpushers.net/show-141-the-pace-of-change-is-picking-up-nfd5-discussion/ http://packetpushers.net/show-141-the-pace-of-change-is-picking-up-nfd5-discussion/#comments Sat, 23 Mar 2013 18:23:06 +0000 Ethan Banks http://packetpushers.net/?p=5388 http://packetpushers.net/show-141-the-pace-of-change-is-picking-up-nfd5-discussion/feed/ 4 brocade,cisco,juniper,nfd5,openflow,plexxi,SDN,vyatta Greg Ferro and Ethan Banks of PacketPushers.net host a discussion with Dr. Peter Welcher, Brent Salisbury, and Stephen Foskett about many of the presentations from the Network Field Day 5 event held March 6-8, 2013 in San Jose, California. - Greg Ferro and Ethan Banks of PacketPushers.net host a discussion with Dr. Peter Welcher, Brent Salisbury, and Stephen Foskett about many of the presentations from the Network Field Day 5 event held March 6-8, 2013 in San Jose, California. The leading podcast topic was software defined networking, as that was the vendor focus during the event. Not that we didn't talk about other stuff too...because we did. Here, look - I outlined the conversation for you. See? What We Discussed "I know where all the bodies are buried." Cisco Catalyst 6500 VSS Quad SSO - for the bottomless budget when you can never, ever fail. NX-OS "peer-gateway" command. Does is solve the "don't peer with a Nexus across the vPC peer-link problem"? 3850 switch CAPWAP tunneling in hardware StackWise480 - not backwards compatible with 3750 stacking. Cisco CSR - price competitive all of a sudden. Plexxi Use of sFlow in modeling application traffic, among other things. Their idea of "affinity networking". Interesting idea not related to Plexxi as such: Should we be lookign at moving VMs to specific clusters instead of tunneling between VMs to optimize traffic patterns? Brocade What does the Vyatta acquisition mean for them? Brocade's OpenFlow-centric conversations. Internet2 100G SDN network Brocade participates in. David Meyer's chat - robustness vs. fragility. Curt Beckmann - update on the ONF. The "Closed-Open Networking Foundation". Is there something we can do as a community to open up the ONF a little bit? Cisco (again) onePK Cisco using it internally to do rapid feature development. Exposing features of a hardware device. As an aside, 90% of the features in IOS are nerd knobs, but the documentation doesn't differentiate. Shouldn't Cisco do something about that? Daylight - rumored consortium of vendors to agree on a controller platform. Java-based. Potentially Beacon. Assuming Daylight won't be Floodlight-based, and assuming java. It's about all the players contributing running code that everyone benefits from. If Cisco waits for customer demand to drive products and architectures, is that leadership? Cisco's hanging back on OpenFlow adoption, whereas Brocade is not. Why is that? Juniper Puppet agent for Junos is great stuff. Why hasn't this been done sooner? Contrail - tunnel fabric that scales to multiple data centers, and includes L3 at the soft switch edge. Still immature, perhaps? Mykonos has been rebranded WebApp Secure, because marketing matters. Or something. Still a really nifty security product. Links NFV project portal at ETSI (NFV mentioned by Brent) NFD5 free-form discussion with Cisco at YouTube (mentioned by Greg) Packet Pushers Podcast no 88:51 http://packetpushers.net/six-things-about-f5-bigip-v11-iapps/ http://packetpushers.net/six-things-about-f5-bigip-v11-iapps/#comments Mon, 18 Mar 2013 21:56:55 +0000 Ethan Banks http://packetpushers.net/?p=5291 http://packetpushers.net/six-things-about-f5-bigip-v11-iapps/feed/ 7 http://packetpushers.net/webinar-anuta-networks-demonstrates-ncloudx-register-now/ http://packetpushers.net/webinar-anuta-networks-demonstrates-ncloudx-register-now/#comments Tue, 12 Mar 2013 00:14:21 +0000 Ethan Banks http://packetpushers.net/?p=5228 http://packetpushers.net/webinar-anuta-networks-demonstrates-ncloudx-register-now/feed/ 0 http://packetpushers.net/show-139-making-your-way-down-the-path-to-nirvana/ http://packetpushers.net/show-139-making-your-way-down-the-path-to-nirvana/#comments Sun, 10 Mar 2013 19:51:51 +0000 Ethan Banks http://packetpushers.net/?p=5201 http://packetpushers.net/show-139-making-your-way-down-the-path-to-nirvana/feed/ 2 cisco onepk,onf,openflow,SDN,virtualization,vxlan Regular hosts Greg Ferro & Ethan Banks are joined by Brandon Carroll, Josh O'Brien, and Tom Hollingsworth in Packet Pushers Weekly Show 139. We translate all the SDN hype into a more practical conversation about what network engineers should be doing t... Regular hosts Greg Ferro & Ethan Banks are joined by Brandon Carroll, Josh O'Brien, and Tom Hollingsworth in Packet Pushers Weekly Show 139. We translate all the SDN hype into a more practical conversation about what network engineers should be doing to update their skills. This is a mostly raw podcast with little editing - just a bunch of people speaking their minds. What We Discuss Which vendors are the ones to watch. Who the "safe bet" is. What new technologies are worth paying attention to. Why you can't afford to put your head in the sand. How to map new products to actual network use cases. When this is all going to matter. We recorded in a mostly quiet foyer on the 5th floor of the Radisson in San Jose, as we were gathered together for Network Field Day 5. However, there is a bit of noise from the nearby elevator and housekeeping crew doing their appointed rounds. Sorry about that...we edited out what we could. Packet Pushers Podcast no 66:33 http://packetpushers.net/why-would-a-vendor-care-about-network-field-day-events/ http://packetpushers.net/why-would-a-vendor-care-about-network-field-day-events/#comments Tue, 05 Mar 2013 03:19:15 +0000 Ethan Banks http://packetpushers.net/?p=5070 http://packetpushers.net/why-would-a-vendor-care-about-network-field-day-events/feed/ 5 http://packetpushers.net/show-138-hps-sdn-products-strategy/ http://packetpushers.net/show-138-hps-sdn-products-strategy/#comments Sat, 02 Mar 2013 16:09:43 +0000 Ethan Banks http://packetpushers.net/?p=5062 http://packetpushers.net/show-138-hps-sdn-products-strategy/feed/ 1 Bryan Stiekes,Dave Tucker,hp,hp sentinel security application,hp tippingpoint repdv,hp virtual application networks sdn controller,hp virtual cloud networks application,openflow,openstack,Sarwar Raza,SDN Show 138 – HP’s Software-Defined Networking (SDN) Strategy and Solution [Written by HP.] - There has been a lot of interest in the market place recently around software-defined Networking (SDN). HP has been a leader in SDN technologies from the very ... Show 138 – HP’s Software-Defined Networking (SDN) Strategy and Solution [Written by HP.] There has been a lot of interest in the market place recently around software-defined Networking (SDN). HP has been a leader in SDN technologies from the very beginning. HP has played an instrumental role in the development of OpenFlow and continues to lead the market. For example: HP and Stanford began collaborating on Ethane—the predecessor to OpenFlow—in 2007. HP OpenFlow technology has been the leading choice for researchers worldwide since 2008. HP now has 29 switches that are enterprise-grade OpenFlow capable, representing the largest OpenFlow-enabled portfolio in the marketplace. Last year, at Interop New York 2012, we announced the industry’s first complete and open-standards-based SDN technologies across all three critical SDN layers—infrastructure, control and application layers that enable enterprises and cloud providers to simplify architecture across data center, campus and branch networks. New innovations at the infrastructure layer included additional OpenFlow-enabled switches. New innovation at the control layer is the Virtual Application Networks SDN controller that centralizes the control plane. At the application layer, we announced two SDN applications: The first application is the HP Virtual Cloud Network (VCN) application that enables cloud providers to deliver automated, scalable and secure multitenant public cloud services to enterprises. Enterprises can also leverage HP VCN to gain the advantages of automation within their private clouds, while enabling secure integration of public cloud environments into their private environment. The second application is the HP Sentinel Security Application. Sentinel application can stop threats before they reach your network by leveraging OpenFlow and HP TippingPoint RepDV – a cloud hosted reputation database. We demonstrated a proof-of-concept at the Interop NYC to showcase how we leverage OpenFlow to redirect client DNS queries traffic to the SDN controller, compare the URL against the RepDV and decide whether to permit or block the connection. Since Interop, we have been hard at work on our SDN solution, so I grabbed the opportunity for our SDN experts Bryan Stiekes and Sarwar Raza to speak with you, the Packet Pushers’ audience, and share with you some of the technical details regarding our solution. What we discussed HP’s definition of SDN Why we believe SDN is important The application of SDN in both the Data Center & Campus Our SDN products: HP Virtual Application Networks SDN Controller, Virtual Cloud Networks application and Sentinel Security application HP’s Open APIs HP’s leadership in OpenFlow and OpenStack For more information You can find more information on HP’s SDN product offerings on HP.com I would highly recommend the following: CERN’s video on their R&D collaboration with HP HP’s SDN Technology White Paper We now have 29 models of switches with OpenFlow support. You can find an up to date list of all of our OpenFlow products here If you can’t find what you are looking for on the website or need more information about SDN you can ask @hp_networking on Twitter. You can also reach me directly @dave_tucker or at dave[dot]j[dot]tucker[at]hp[dot]com Packet Pushers Podcast no 43:07 http://packetpushers.net/thoughts-on-working-as-a-consultant-for-a-var/ http://packetpushers.net/thoughts-on-working-as-a-consultant-for-a-var/#comments Mon, 25 Feb 2013 01:36:01 +0000 Ethan Banks http://packetpushers.net/?p=5029 http://packetpushers.net/thoughts-on-working-as-a-consultant-for-a-var/feed/ 6 http://packetpushers.net/show-137-gartner-is-not-for-sale-with-aneel-lakhani/ http://packetpushers.net/show-137-gartner-is-not-for-sale-with-aneel-lakhani/#comments Sat, 23 Feb 2013 20:45:46 +0000 Ethan Banks http://packetpushers.net/?p=4989 http://packetpushers.net/show-137-gartner-is-not-for-sale-with-aneel-lakhani/feed/ 0 analyst,aneel lakhani,gartner,independence Summary Packet Pushers co-hosts Ethan Banks & Greg Ferro chat with Aneel Lakhani, a research director at Gartner about his job. Aneel provides an insider perspective on  how the research & analysis business works. More Info Summary Packet Pushers co-hosts Ethan Banks & Greg Ferro chat with Aneel Lakhani, a research director at Gartner about his job. Aneel provides an insider perspective on  how the research & analysis business works. More Info Analyst firm research offerings seem to cynical network engineers like bought-and-paid-for shill pieces whose conclusions follow the money back to its source. As such, Gartner and other firms are the butt of jokes and ridicule from the CLI jockeys who make networks work every day. Aneel is active on Twitter and interacts with a lot of networking vendors. Since we knew he worked Gartner, we wondered if he'd like to talk about what really goes on inside Gartner's ivory towers. With Gartner's blessing, Aneel came on the show and answered some hard questions frankly - even bluntly. Sure, Aneel doesn't speak for all of Gartner, but we ended up with a lot of useful insight from him. How does Aneel's job work? What's he do all day? Who is a Gartner "customer"? How does an analyst determine what products are interesting while avoiding bias? How technically competent are Gartner analysts? Most Gartner reports seems to represent the current state of affairs, but not look into the future. Why is that? Why is longevity at Gartner something to be proud of? Packet Pushers Podcast no 32:24 http://packetpushers.net/on-working-yourself-to-death/ http://packetpushers.net/on-working-yourself-to-death/#comments Fri, 15 Feb 2013 21:34:50 +0000 Ethan Banks http://packetpushers.net/?p=4916 http://packetpushers.net/on-working-yourself-to-death/feed/ 16 http://packetpushers.net/cisco-asa-high-cpu-in-dispatch-unit/ http://packetpushers.net/cisco-asa-high-cpu-in-dispatch-unit/#comments Tue, 12 Feb 2013 22:51:59 +0000 Ethan Banks http://packetpushers.net/?p=4863 http://packetpushers.net/cisco-asa-high-cpu-in-dispatch-unit/feed/ 8 http://packetpushers.net/show-134-ospf-design-part-1-debunking-the-multiple-area-myth/ http://packetpushers.net/show-134-ospf-design-part-1-debunking-the-multiple-area-myth/#comments Sat, 02 Feb 2013 17:08:10 +0000 Ethan Banks http://packetpushers.net/?p=4666 http://packetpushers.net/show-134-ospf-design-part-1-debunking-the-multiple-area-myth/feed/ 9 area 0,bfd,john moy,ospf,reference bandwidth,rfc 5880,route summarization,timers Derick Winkworth, Paul Gear, and Darren O' Connor chat with Ethan Banks about their experiences with OSPF. The major focus of the conversation is on single vs. multiple areas. What We Discuss What should the reference bandwidth be set to? Derick Winkworth, Paul Gear, and Darren O' Connor chat with Ethan Banks about their experiences with OSPF. The major focus of the conversation is on single vs. multiple areas. What We Discuss What should the reference bandwidth be set to? How big of an integer does OSPF use to store the cost metric? When should your OSPF design assume one area? Does that old guideline of "50 routers in an area" still hold true? When is it wise to split an OSPF domain into multiple areas? The differences between what you're taught in a certification program and reality. How does route summarization play into OSPF area design? OSPFv3 & IPv6: how are real-world deployments going? Timer and tweaks and oscillations - oh, my! Why using Bidirectional Forwarding Detection (BFD) is better than tweaking OSPF timers. Links Darren's blog Paul's blog Derick's blog (on Packet Pushers) OSPF: Anatomy of an Internet Routing Protocol by John Moy (Amazon) Cisco OSPF Design Guide Wikipedia on OSPF Jeff Doyle's "Favorite Interview Question" (explains why interarea OSPF traffic must traverse the backbone area) RFC5880 - Bidirectional Forwarding Detection (BFD) Packet Pushers Podcast no 51:19 http://packetpushers.net/the-dark-side-of-vendor-certifications/ http://packetpushers.net/the-dark-side-of-vendor-certifications/#comments Thu, 31 Jan 2013 02:49:29 +0000 Ethan Banks http://packetpushers.net/?p=4626 http://packetpushers.net/the-dark-side-of-vendor-certifications/feed/ 19 http://packetpushers.net/show-133-what-makes-brocade-vcs-fabrics-different-sponsored/ http://packetpushers.net/show-133-what-makes-brocade-vcs-fabrics-different-sponsored/#comments Mon, 28 Jan 2013 17:30:22 +0000 Ethan Banks http://packetpushers.net/?p=4591 http://packetpushers.net/show-133-what-makes-brocade-vcs-fabrics-different-sponsored/feed/ 3 Brocade's Jon Hudson joins Greg Ferro and Ethan Banks for a introduction to Brocade VCS fabrics. VCS is the software that runs on Brocade VDX hardware, and Jon explains the basic implementation and use cases for the VCS approach. What We Discuss - Brocade's Jon Hudson joins Greg Ferro and Ethan Banks for a introduction to Brocade VCS fabrics. VCS is the software that runs on Brocade VDX hardware, and Jon explains the basic implementation and use cases for the VCS approach. What We Discuss What Brocade is going after with VCS: automation & intelligence. The ability to make hitless changes to a production VCS fabric. AMPP: automatic migration of port profiles. VCS integration with vCenter. Brocade's custom silicon - they make their own ASICs. Brocade's strong storage history makes for a strong storage over Ethernet fabric story today. Use case #1: cloud services provider. Use case #2: private clouds in the enterprise. Use case #3: VDI in a health care environment. Links Brocade VCS Fabric Technology Brocade VDX 8770 Switch Packet Pushers Priority Queue - Show 11 – Brocade VDX 8770 – Technical Deep Dive Packet Pushers Priority Queue - Show 17 – Reviewing the Brocade VDX Launch With Ivan Pepelnjak Packet Pushers Podcast no 34:59 http://packetpushers.net/understanding-crossbar-fabrics-the-islip-algorithm/ http://packetpushers.net/understanding-crossbar-fabrics-the-islip-algorithm/#comments Sun, 27 Jan 2013 20:40:16 +0000 Ethan Banks http://packetpushers.net/?p=4580 http://packetpushers.net/understanding-crossbar-fabrics-the-islip-algorithm/feed/ 6 http://packetpushers.net/five-things-about-mentoring/ http://packetpushers.net/five-things-about-mentoring/#comments Sat, 19 Jan 2013 18:23:15 +0000 Ethan Banks http://packetpushers.net/?p=4375 http://packetpushers.net/five-things-about-mentoring/feed/ 14 http://packetpushers.net/cisco-ccie-350-001-v4-written-exam-impressions/ http://packetpushers.net/cisco-ccie-350-001-v4-written-exam-impressions/#comments Fri, 11 Jan 2013 13:00:52 +0000 Ethan Banks http://packetpushers.net/?p=4310 http://packetpushers.net/cisco-ccie-350-001-v4-written-exam-impressions/feed/ 13 http://packetpushers.net/pq-show-021-cisco-data-center-certs-with-tony-bourke/ http://packetpushers.net/pq-show-021-cisco-data-center-certs-with-tony-bourke/#comments Fri, 11 Jan 2013 13:00:05 +0000 Ethan Banks http://packetpushers.net/?p=4266 http://packetpushers.net/pq-show-021-cisco-data-center-certs-with-tony-bourke/feed/ 4 ccna,ccnp,certification,cisco,cisco learning network,data center,tony bourke Ethan Banks and Tony Bourke discuss the Cisco Data Center certifications, focusing on the CCNA & CCNP tracks. We take a look at what the tracks cover, who the right candidates are for these tracks, and how to prep. Inevitably, Ethan Banks and Tony Bourke discuss the Cisco Data Center certifications, focusing on the CCNA & CCNP tracks. We take a look at what the tracks cover, who the right candidates are for these tracks, and how to prep. Inevitably, a few rabbit trails are followed as we pontificate about FCoE adoption or lack thereof, Tony's progress in the CCIE DC track, the value of having Cisco DC certs but no VMware certs, the technology collision in the modern data center as job responsibilities change, and whether or not these tracks are too Cisco-focused. Oh. And isn't it about time we move to performance-based testing via challenge labs instead of multiple-choice questions at the professional level certs? Links Tony's Blog CCNA Data Center Track CCNP Data Center Track NX-OS and Cisco Nexus Switching: Next-Generation Data Center Architectures - book Cisco Unified Computing System (UCS): A Complete Reference Guide to the Cisco Data Center Virtualization Server Architecture, 2nd Edition - book coming in July 2013   Packet Pushers Podcast no 56:08 http://packetpushers.net/show-130-2012-wrap-up-and-holiday-wishes/ http://packetpushers.net/show-130-2012-wrap-up-and-holiday-wishes/#comments Sat, 22 Dec 2012 23:35:29 +0000 Ethan Banks http://packetpushers.net/?p=4069 http://packetpushers.net/show-130-2012-wrap-up-and-holiday-wishes/feed/ 3 From Greg and me to you, Merry Christmas & Happy Holidays. This edition of the Packet Pushers podcast is short and sweet: Our thanks to many in the community. A fireside chat to let you know how the show has been going. From Greg and me to you, Merry Christmas & Happy Holidays. This edition of the Packet Pushers podcast is short and sweet: Our thanks to many in the community. A fireside chat to let you know how the show has been going. What our plans are for 2013. Audio holiday greeting cards from several listeners. Please enjoy, and we'll see you next year! Packet Pushers Podcast no 36:26 http://packetpushers.net/top-50-packet-pushers-blog-posts-for-2012/ http://packetpushers.net/top-50-packet-pushers-blog-posts-for-2012/#comments Fri, 21 Dec 2012 17:27:24 +0000 Ethan Banks http://packetpushers.net/?p=4041 http://packetpushers.net/top-50-packet-pushers-blog-posts-for-2012/feed/ 3 http://packetpushers.net/pq-show-019-big-switch-webinar-q-a-session/ http://packetpushers.net/pq-show-019-big-switch-webinar-q-a-session/#comments Thu, 20 Dec 2012 20:08:38 +0000 Ethan Banks http://packetpushers.net/?p=4027 http://packetpushers.net/pq-show-019-big-switch-webinar-q-a-session/feed/ 0 andrew harding,big switch networks,big tap,dan hersey,ipv6,openflow,rest api,SDN,webinar On December 13, 2012, the Packet Pushers published show 128, a video podcast with Big Switch Networks, where Dan Hersey & Andrew Harding discuss & demo the Big Switch controller, and applications that run on the Big Switch controller such as Big Virtua... On December 13, 2012, the Packet Pushers published show 128, a video podcast with Big Switch Networks, where Dan Hersey & Andrew Harding discuss & demo the Big Switch controller, and applications that run on the Big Switch controller such as Big Virtual Switch and Big Tap. If you haven't seen that show yet, you might want to give show 128 a view before listening to this podcast. What this podcast covers is the Q&A session after the formal recording of show 128 was complete. There were a lot questions from the live audience, and we talked through several of them. These questions & answers are excellent for helping a traditional network engineer better understand the Big Switch controller and how it fits into both current and future network designs. Speaking on the podcast are the usual Packet Pushers co-hosts Ethan Banks and Greg Ferro with Dan Hersey & Andrew Harding from Big Switch. What We Discuss Explain how the Big Switch controller is plumbed to the network and how it is redundant. Is there as separate or out-of-band network for control-plane or management traffic? Explain the pros and cons of physical vs. virtual switches. What version of OpenFlow is supported today, and what's the roadmap for other versions of OpenFlow? What's the status of standardization for northbound APIs? What is a REST API? What does software defined networking mean for network security? Can a Big Switch network route between L3 domains? Is there IPv6 support? What are the performance numbers? Where is the bottleneck in a Big Switch environment? What's the status of a GUI vs. CLI vs. other means of interacting with the controller? Discuss Big Switch's open approach to SDN as compared to some other vendors.   Packet Pushers Podcast no 24:43 http://packetpushers.net/the-end-of-year-audit-things-worth-checking-while-you-have-a-minute/ http://packetpushers.net/the-end-of-year-audit-things-worth-checking-while-you-have-a-minute/#comments Thu, 20 Dec 2012 07:00:23 +0000 Ethan Banks http://packetpushers.net/?p=4011 http://packetpushers.net/the-end-of-year-audit-things-worth-checking-while-you-have-a-minute/feed/ 9 http://packetpushers.net/show-129-unhs-interoperability-lab-discusses-ethernet-in-your-car/ http://packetpushers.net/show-129-unhs-interoperability-lab-discusses-ethernet-in-your-car/#comments Thu, 20 Dec 2012 00:00:32 +0000 Ethan Banks http://packetpushers.net/?p=3886 http://packetpushers.net/show-129-unhs-interoperability-lab-discusses-ethernet-in-your-car/feed/ 0 broadcom,broadr-reach,dave estes,ethernet,jeff lapak,open alliance,unh iol Jeff Lapak and Dave Estes from the University of New Hampshire's InterOperability Lab join the Packet Pushers to introduce the IOL to the audience. We also chat about BroadR-Reach: Ethernet for your car. BroadR-Reach is enabling all sorts of automotive... Jeff Lapak and Dave Estes from the University of New Hampshire's InterOperability Lab join the Packet Pushers to introduce the IOL to the audience. We also chat about BroadR-Reach: Ethernet for your car. BroadR-Reach is enabling all sorts of automotive future tech, as our cars become just as networked as any of our other modern gadgets. In this show, we discuss the UNH IOL - what it is, what it does, and why you care. Then we jump into a discussion of BroadR-Reach, how it's tested, what the roadmap is, and what the use cases are for Ethernet inside of automobiles. Packet Pushers Podcast no 32:24 http://packetpushers.net/show-126-plexxi-affinity-networking-with-marten-terpstra-sponsored/ http://packetpushers.net/show-126-plexxi-affinity-networking-with-marten-terpstra-sponsored/#comments Wed, 05 Dec 2012 13:30:19 +0000 Ethan Banks http://packetpushers.net/?p=3760 http://packetpushers.net/show-126-plexxi-affinity-networking-with-marten-terpstra-sponsored/feed/ 8 affinity networking,dwdm,marten terpstra,optical networking,plexxi,SDN,wdm Boston area networking startup Plexxi parks their tour bus at the Packet Pushers studios for a chat with Ethan Banks and Greg Ferro. Plexxi's Ethernet switch with optical ring interconnect using WDM makes a highly meshed network possible without requir... Boston area networking startup Plexxi parks their tour bus at the Packet Pushers studios for a chat with Ethan Banks and Greg Ferro. Plexxi's Ethernet switch with optical ring interconnect using WDM makes a highly meshed network possible without requiring core switches. Add Plexxi's API and controller, and the Plexxi solution allows network architects to build affinities between systems and give them special, flexible treatment across the data center. The approach is genuinely out-of-the-box thinking, and to my mind, an outstanding example what what software defined networking really looks like. Marten Terpstra, Director of Product Management at Plexxi, brings the nerdery, talking through the Plexxi approach at both a technical and practical level. What We Discuss The Plexxi hardware solution. Interconnecting Plexxi switches using WDM over an optical ring: the LightRail interface. The concept of "Affinity Networking." The Plexxi software controller. How a Plexxi network functions without a controller (yes, it still works). Understanding the Plexxi API. How traffic is forwarded through a Plexxi domain. MLAG support and other practical matters. Use cases. Links Plexxi.com Plexxi Pulse Blog Affinity Driven Networking - Dec 2012 whitepaper (PDF) Packet Pushers Podcast no 45:00 http://packetpushers.net/pq-show-18-bits-is-bits-ciscos-michael-enescu-on-open-source-neutrality-sponsored/ http://packetpushers.net/pq-show-18-bits-is-bits-ciscos-michael-enescu-on-open-source-neutrality-sponsored/#comments Sun, 02 Dec 2012 00:00:04 +0000 Ethan Banks http://packetpushers.net/?p=3750 http://packetpushers.net/pq-show-18-bits-is-bits-ciscos-michael-enescu-on-open-source-neutrality-sponsored/feed/ 3 Cisco contributes quite a bit of code to the open source world, and Michael Enescu, CTO for Open Source Initiatives, is just the guy to tell the Packet Pushers audience about it. In this discussion with hosts Ethan Banks and Greg Ferro, Cisco contributes quite a bit of code to the open source world, and Michael Enescu, CTO for Open Source Initiatives, is just the guy to tell the Packet Pushers audience about it. In this discussion with hosts Ethan Banks and Greg Ferro, Michael discusses the what, why and how of Cisco's open source efforts. What We Discuss The difference between "open source" and "open standards". The open source initiatives Cisco is involved with (Linux kernel, Quantum, OpenStack, etc.) How Cisco functions internally when dealing with open source projects. The benefits Cisco customers receive due to Cisco's open source involvement. Cisco's track record of openness. Links The Yang of Open Standards, The Yin of Open Source Packet Pushers Podcast no 26:47 http://packetpushers.net/holiday-greetings-podcast-your-audio-greeting-cards-wanted/ http://packetpushers.net/holiday-greetings-podcast-your-audio-greeting-cards-wanted/#comments Wed, 28 Nov 2012 15:14:36 +0000 Ethan Banks http://packetpushers.net/?p=3703 http://packetpushers.net/holiday-greetings-podcast-your-audio-greeting-cards-wanted/feed/ 0 http://packetpushers.net/why-network-engineers-are-sick-of-sdn-and-what-vendors-can-do-about-it/ http://packetpushers.net/why-network-engineers-are-sick-of-sdn-and-what-vendors-can-do-about-it/#comments Sat, 24 Nov 2012 18:56:24 +0000 Ethan Banks http://packetpushers.net/?p=3463 http://packetpushers.net/why-network-engineers-are-sick-of-sdn-and-what-vendors-can-do-about-it/feed/ 20 http://packetpushers.net/cisco-asa-9-0-clustering-technical-highlights/ http://packetpushers.net/cisco-asa-9-0-clustering-technical-highlights/#comments Tue, 13 Nov 2012 19:25:06 +0000 Ethan Banks http://packetpushers.net/?p=3435 http://packetpushers.net/cisco-asa-9-0-clustering-technical-highlights/feed/ 4 http://packetpushers.net/help-us-plan-our-shows-the-podcast-planning-forum/ http://packetpushers.net/help-us-plan-our-shows-the-podcast-planning-forum/#comments Tue, 13 Nov 2012 01:02:37 +0000 Ethan Banks http://packetpushers.net/?p=3431 http://packetpushers.net/help-us-plan-our-shows-the-podcast-planning-forum/feed/ 0 http://packetpushers.net/is-burn-out-why-it-people-change-jobs-so-much/ http://packetpushers.net/is-burn-out-why-it-people-change-jobs-so-much/#comments Sat, 03 Nov 2012 23:30:53 +0000 Ethan Banks http://packetpushers.net/?p=3331 http://packetpushers.net/is-burn-out-why-it-people-change-jobs-so-much/feed/ 32 http://packetpushers.net/show-123-lisp-use-cases-with-dino-farinacci-victor-moreno-of-cisco-sponsored/ http://packetpushers.net/show-123-lisp-use-cases-with-dino-farinacci-victor-moreno-of-cisco-sponsored/#comments Sat, 03 Nov 2012 19:27:21 +0000 Ethan Banks http://packetpushers.net/?p=3315 http://packetpushers.net/show-123-lisp-use-cases-with-dino-farinacci-victor-moreno-of-cisco-sponsored/feed/ 6 cisco lisp,dino farinacci,lisp,locator/id separation protocol,victor moreno This week's podcast features Cisco Fellow & Senior Software Engineer Dino Farinacci and Distinguished Engineer Victor Moreno in a discussion of LISP - Locator/ID Separation Protocol. Ethan Banks and Greg Ferro host. - This week's podcast features Cisco Fellow & Senior Software Engineer Dino Farinacci and Distinguished Engineer Victor Moreno in a discussion of LISP - Locator/ID Separation Protocol. Ethan Banks and Greg Ferro host. The Packet Pushers talked with Victor back in show 54 about LISP. Show 123 is focused less on the mechanics of the protocol, and more on the use cases. In other words, what can we do with yet another routing protocol that hasn't already been done with others? The answer is rather a lot. LISP isn't simply a routing protocol; it's a way of decoupling an endpoint (something you're trying to communicate with) from a physical location. Therefore, an endpoint can be stationary or mobile, and LISP will sort that out in way that scales to Internet-size and beyond. What We Discuss Quick review: what is LISP? How is LISP different from legacy tunneling protocols? What Cisco platforms run LISP? Where does a LISP mapping database run? LISP Use Case: L2 DCI & vMotion. LISP Use Case: Changing the Notion of Subnetting. Explaining LISP RLOCs & EIDs. The LISP future vs. current reality. How extensible are the LISP forwarding tuples? LISP Use Case: The Internet of Things. LISP Use Case: Mobility Across Cloud Providers. How does LISP scale? Will LISP be standardized and adopted by other vendors? Other LISP use cases (including IPv6 transition). LISP as a programmable API.   Packet Pushers Podcast no 46:38 http://packetpushers.net/forum-packetpushers-net-is-live/ http://packetpushers.net/forum-packetpushers-net-is-live/#comments Sat, 27 Oct 2012 15:16:34 +0000 Ethan Banks http://packetpushers.net/?p=3163 http://packetpushers.net/forum-packetpushers-net-is-live/feed/ 0 http://packetpushers.net/show-122-mission-impossible-blast-radius-part-2/ http://packetpushers.net/show-122-mission-impossible-blast-radius-part-2/#comments Sat, 20 Oct 2012 15:37:02 +0000 Ethan Banks http://packetpushers.net/?p=3107 http://packetpushers.net/show-122-mission-impossible-blast-radius-part-2/feed/ 1 firewalls,network security,overlay networks,virtualization security,wan acceleration,wan optimization In this "part 2" podcast (show 119 was part 1), co-hosts Ethan Banks and Greg Ferro are joined by Tom Hollingsworth, Tony Bourke, Kurt Bales, Ivan Pepelnjak and Michele Chubirka aka Mrs. Y. As the show continues, we ramble on about the following: In this "part 2" podcast (show 119 was part 1), co-hosts Ethan Banks and Greg Ferro are joined by Tom Hollingsworth, Tony Bourke, Kurt Bales, Ivan Pepelnjak and Michele Chubirka aka Mrs. Y. As the show continues, we ramble on about the following: What We Discuss The future of WAN acceleration. Greg was writing this report and started to read up on some things, and then there were all these opinions...you know how it goes on this show. Check Point's not feeling the love from this crew. Perhaps a little warmth...the amount of heat you'd feel from a match struck six feet away. But then the discussion morphs into firewalls in general, where the heartfelt admiration of those chattering into their microphones is still really hard to find. The security ramble continues into firewall management platforms, followed up by just how we should be securing virtualized environments. Closing it out are some bits about overlay networks and how they are impacting data center design. Fun show to record - we hope you enjoy! Packet Pushers Podcast no 56:19 http://packetpushers.net/show-120-the-api-layer-cake-with-dave-ward-and-lauren-cooney-of-cisco-sponsored/ http://packetpushers.net/show-120-the-api-layer-cake-with-dave-ward-and-lauren-cooney-of-cisco-sponsored/#comments Tue, 09 Oct 2012 22:55:33 +0000 Ethan Banks http://packetpushers.net/?p=2629 http://packetpushers.net/show-120-the-api-layer-cake-with-dave-ward-and-lauren-cooney-of-cisco-sponsored/feed/ 4 dave ward,ietf,interfaces to the routing system,irs,lauren cooney,networking standards,pcep,SDN,software defined networking Dave Ward, CTO & Chief Architect of the Service Provider Division at Cisco and Lauren Cooney, Senior Director of Software Market Strategy at Cisco join Packet Pushers hosts Greg Ferro and Ethan Banks for a discussion about software defined networking a... Dave Ward, CTO & Chief Architect of the Service Provider Division at Cisco and Lauren Cooney, Senior Director of Software Market Strategy at Cisco join Packet Pushers hosts Greg Ferro and Ethan Banks for a discussion about software defined networking and the evolution of onePK & APIs. Not to put too fine a point on it, we consider this to be an important show. A lot of what Dave and Lauren discuss on this program is future-thinking stuff, but with real meat on the bones. Dave isn't just dreaming; he's doing. Dave is right down in the guts of API development and IETF standards formation. He's got a very good idea of where software defined networking should be taking the networking industry and how APIs can get us there. What We Discuss Cisco onePK - a software development toolkit providing a common data model, common object model, and common API across Cisco platforms running IOS, IOS-XR, and NX-OS. OnePK is a foundation technology providing an abstraction layer. It enables programmatic interfaces. The notion of a "network programming interface". How code you've written interacts with onePK agents, and ultimately with the end device. How interaction with legacy SNMP and onePK is different. What a "full duplex" interface is in the context of network programmability, and why it's really, really important. It's not just about logs & events when it comes to our devices telling us things. It's also about topology discovery, device capabilities, state, etc. Where are we at with standardization of APIs? That's going to drive SDN & network programmability further along if there's industry agreement of baseline functionality. IETF is working on IRS: Interfaces to the Routing System. Why OpenFlow is limiting in the long-term vision of network programmability. The CLI isn't the magic. Getting the job done quickly and correctly is. Why building an ecosystem around apps that can program the network is key. The five modules Dave is working on to enable third parties to integrate with a variety of underlying network services. The API layer cake: published APIs at the device, virtualization, and orchestration layers. An emerging open ecosystem that drives API development. Quotes "Things don't begin and end with OpenFlow by any stretch of the imagination." - Dave Ward "The whole goal is not just basic connectivity - it's engineered connectivity." - Dave Ward "IT professionals need to be able to interact in a heterogeneous network in a standardized way and issue one command across the network to get something done." - Dave Ward Links Cisco onePK RFC5440: Path Computation Element (PCE) Communication Protocol (PCEP) IRS: Interfaces to the Routing System mailing list Ask the Expert: Network Embedded Automation and Programmability (from the Cisco Support Community) Dave's blog article we referred to: Programmatic Interfaces Are Not Taxing OnePK Show with Richard Pruss Packet Pushers Podcast no 47:26 http://packetpushers.net/show-119-mission-impossible-blast-radius-part-1/ http://packetpushers.net/show-119-mission-impossible-blast-radius-part-1/#comments Sat, 06 Oct 2012 19:59:09 +0000 Ethan Banks http://packetpushers.net/?p=2866 http://packetpushers.net/show-119-mission-impossible-blast-radius-part-1/feed/ 8 catalyst 6500,ipv6,juniper qfabric,musk sticks,vmware fusion 5,vmware vtax In this free-for-all hootenanny, the Packet Pushers virtual workbench assembles a team of talking heads for a podcast that was so long, we had to split it into two parts. Ethan Banks accepts the impossible mission from Mrs. Y of hosting the show, In this free-for-all hootenanny, the Packet Pushers virtual workbench assembles a team of talking heads for a podcast that was so long, we had to split it into two parts. Ethan Banks accepts the impossible mission from Mrs. Y of hosting the show, and is joined by the following folks: Greg Ferro, exposer of hyperbole & fluff; Tom Hollingsworth, Kentucky-fried lie detector; Tony Bourke, part-time pilot, permanent skeptic; Kurt Bales, an Aussie who leaves no stone unturned, no kangaroo pouch unprobed; Ivan Pepelnjak, memorizer of RFCs; and the esoteric and ever dubious Mrs. Y. What do we talk about? Why, I'm glad you asked! The death of the VMware vTax. Or did they just shift the revenue source somewhere else? Kurt talks about his new job and just how smitten he is with Juniper's QFabric. And then we follow a rabbit obediently down the hole of musk sticks. We pontificate about the Apple vs. Samsung ruling, and what it means for patent law. VMware Fusion 5 gets discussed. Is it a trap? Greg rants as only he can about the zombiefied Catalyst 6500, the switch that won't die. No one cares about IPv6. Well, okay. WE care, and we think you should too. So why is there STILL such a slow uptake? Lots of reasons, really... P.S. Oh. So you're probably wondering what a musk stick tastes like after our discussion on the show. Yeah...here's a picture Tony Bourke captured of Tom Hollingsworth after he tried a musk stick. That help? Tom Hollingsworth tries a musk stick. Picture credit: Tony Bourke. Packet Pushers Podcast no 68:36 http://packetpushers.net/five-things-about-cisco-nexus-5k-control-plane-policing-copp/ http://packetpushers.net/five-things-about-cisco-nexus-5k-control-plane-policing-copp/#comments Fri, 05 Oct 2012 22:05:25 +0000 Ethan Banks http://packetpushers.net/?p=2839 http://packetpushers.net/five-things-about-cisco-nexus-5k-control-plane-policing-copp/feed/ 1 http://packetpushers.net/four-interview-questions-i-have-asked-network-engineering-candidates/ http://packetpushers.net/four-interview-questions-i-have-asked-network-engineering-candidates/#comments Thu, 04 Oct 2012 00:04:21 +0000 Ethan Banks http://packetpushers.net/?p=2810 http://packetpushers.net/four-interview-questions-i-have-asked-network-engineering-candidates/feed/ 17 http://packetpushers.net/help-a-young-lady-meet-her-fund-raising-goal/ http://packetpushers.net/help-a-young-lady-meet-her-fund-raising-goal/#comments Wed, 26 Sep 2012 03:38:10 +0000 Ethan Banks http://packetpushers.net/?p=2668 http://packetpushers.net/help-a-young-lady-meet-her-fund-raising-goal/feed/ 0 http://packetpushers.net/five-things-to-know-about-dhcp-snooping/ http://packetpushers.net/five-things-to-know-about-dhcp-snooping/#comments Tue, 25 Sep 2012 14:59:39 +0000 Ethan Banks http://packetpushers.net/?p=2650 http://packetpushers.net/five-things-to-know-about-dhcp-snooping/feed/ 7 http://packetpushers.net/now-with-sdn-for-more-forwarding-goodness-in-every-lookup/ http://packetpushers.net/now-with-sdn-for-more-forwarding-goodness-in-every-lookup/#comments Tue, 18 Sep 2012 23:16:13 +0000 Ethan Banks http://packetpushers.net/?p=2586 http://packetpushers.net/now-with-sdn-for-more-forwarding-goodness-in-every-lookup/feed/ 6 http://packetpushers.net/show-114-real-life-ccnp-with-jeremy-cioara/ http://packetpushers.net/show-114-real-life-ccnp-with-jeremy-cioara/#comments Sat, 25 Aug 2012 17:31:52 +0000 Ethan Banks http://packetpushers.net/?p=2462 http://packetpushers.net/show-114-real-life-ccnp-with-jeremy-cioara/feed/ 19 ccnp,certification,cisco,jeremy cioara,scott mcdermott Jeremy Cioara, IT trainer, uber-nerd, and all-around Cisco geek jacks into a Skype conference room with Packet Pushers Ethan Banks and Greg Ferro to discuss the Cisco Certified Network Professional (CCNP) program. Scott McDermott, newly minted CCNP, Jeremy Cioara, IT trainer, uber-nerd, and all-around Cisco geek jacks into a Skype conference room with Packet Pushers Ethan Banks and Greg Ferro to discuss the Cisco Certified Network Professional (CCNP) program. Scott McDermott, newly minted CCNP, also joins in the conversation to share his studying and testing experiences. We don't just yammer on about the tests, though. We also talk about the practical side of being certified, and how you can move ahead in your networking career using certification as a vehicle. What We Discuss Why get certified anyway? What's the big deal? Who is the CCNP program aimed at? Why do most people do route/switch tracks before other tracks like voice or security? Greg has no use for VoIP. No, really. He doesn't. What's the best order to take the CCNP route/switch exams in? How do you turn a certification into a better job situation? 9-to-5-ers vs. people who love networking: which are you? Links Cisco's CCNP certification program landing page. Cisco CCNP Routing & Switching syllabus. CBTNuggets.com - streaming IT training on computers and mobile devices. Jeremy Cioara blogs sporadically at tekcert.com. Scott McDermott blogs at mostlynetworks.com. Packet Pushers Podcast no 57:06 http://packetpushers.net/ahead-llc-chicago-illinois-usa-data-center-implementation-engineer/ http://packetpushers.net/ahead-llc-chicago-illinois-usa-data-center-implementation-engineer/#comments Mon, 20 Aug 2012 21:08:54 +0000 Ethan Banks http://packetpushers.net/?p=2399 http://packetpushers.net/ahead-llc-chicago-illinois-usa-data-center-implementation-engineer/feed/ 4 http://packetpushers.net/does-sdn-mean-it-will-be-able-to-get-rid-of-network-people/ http://packetpushers.net/does-sdn-mean-it-will-be-able-to-get-rid-of-network-people/#comments Fri, 10 Aug 2012 14:36:47 +0000 Ethan Banks http://packetpushers.net/?p=2362 http://packetpushers.net/does-sdn-mean-it-will-be-able-to-get-rid-of-network-people/feed/ 12 http://packetpushers.net/cisco-technical-support-theres-an-app-for-that/ http://packetpushers.net/cisco-technical-support-theres-an-app-for-that/#comments Thu, 09 Aug 2012 21:52:25 +0000 Ethan Banks http://packetpushers.net/?p=2360 http://packetpushers.net/cisco-technical-support-theres-an-app-for-that/feed/ 5 http://packetpushers.net/pq-show-009-cisco-nexus-deep-dive-part-2-5-virtual-port-channel-concluded/ http://packetpushers.net/pq-show-009-cisco-nexus-deep-dive-part-2-5-virtual-port-channel-concluded/#comments Thu, 02 Aug 2012 07:00:37 +0000 Ethan Banks http://packetpushers.net/?p=2319 http://packetpushers.net/pq-show-009-cisco-nexus-deep-dive-part-2-5-virtual-port-channel-concluded/feed/ 1 bridge assurance,cisco nexus,fabricpath,LACP,spanning-tree,virtual port-channel Tony Mattke, Chris Marget, and Jeff Fry continue a discussion begun in Priority Queue Show 007 with Ethan Banks about deploying virtual port-channel technology with the Cisco Nexus 5K and 7K series of switches in this continuation of the Cisco Nexus de... Tony Mattke, Chris Marget, and Jeff Fry continue a discussion begun in Priority Queue Show 007 with Ethan Banks about deploying virtual port-channel technology with the Cisco Nexus 5K and 7K series of switches in this continuation of the Cisco Nexus deep-dive podcast series. What We Discuss Traffic-flow through a virtual port-channel infrastructure. HSRP behavior in a vPC domain. Spanning-tree convergence enhancement: both switches get to act as the same root, so if one fails the other takes over with no change to the STP topology. Auto-recovery - bringing up ports in a vPC domain after a disruptive power failure. ARP & other table synchronization between vPC switches. vPC loop prevention algorithm - preventing traffic from going round and round. LACP vs. PAgP vs. "mode on" in a vPC domain. Spanning-tree notes - bridge assurance (bi-directional BPDU flow) & edge-type ports. UDLD: to run, or not to run? Notes on IGMP snooping: don't disable it! We mention FabricPath. You know...briefly. Links Cisco Virtual PortChannel Quick Configuration Guide Auto recovery Understanding Bridge Assurance Brad Hedlund on leaf-spine architecture & design considerations Packet Pushers Podcast no 33:24 http://packetpushers.net/juniper-networks-network-solutions-engineer-access-aggregation/ http://packetpushers.net/juniper-networks-network-solutions-engineer-access-aggregation/#comments Wed, 01 Aug 2012 01:48:25 +0000 Ethan Banks http://packetpushers.net/?p=2328 http://packetpushers.net/juniper-networks-network-solutions-engineer-access-aggregation/feed/ 0 http://packetpushers.net/show-112-sdns-potential-as-a-displacement-technology-with-jeff-doyle-bill-koss/ http://packetpushers.net/show-112-sdns-potential-as-a-displacement-technology-with-jeff-doyle-bill-koss/#comments Sat, 28 Jul 2012 17:14:11 +0000 Ethan Banks http://packetpushers.net/?p=2312 http://packetpushers.net/show-112-sdns-potential-as-a-displacement-technology-with-jeff-doyle-bill-koss/feed/ 4 bill koss,cloud,ethernet fabric,jeff doyle,openflow,plexxi,SDN,spb,trill Well-known author and independent consultant Jeff Doyle joins Bill Koss of networking startup Plexxi as first time guests on the Packet Pushers podcast. Ethan Banks hosts, and Greg Ferro plays the role of in-house opinion-maker, trend-setter, Well-known author and independent consultant Jeff Doyle joins Bill Koss of networking startup Plexxi as first time guests on the Packet Pushers podcast. Ethan Banks hosts, and Greg Ferro plays the role of in-house opinion-maker, trend-setter, and fashion icon. What We Discuss Let's define SDN (again), because the definition has been shifting around as different vendors get into the mix. Is Cisco's push towards network programmability changing how customers perceive SDN? If SDN ends up as merely fancy change management or service provisioning, is that really disruptive? Assuming MPLS is overly complex for a data center deployment, does that point to an Openflow use-case? Why can't the network function like the other technology in an IT department? There's many pieces that must be put into place before SDN can start disrupting the status quo. The importance of analytics engines as arbiters between network infrastructure (here's what I have) and applications (here's what I need). What's the relevance of legacy protocols like BGP and OSPF if we're trying to reinvent the network to be software defined? Risk aversion has resulted in 20 years of network inertia & fragility. How does that change to open the door to SDN approaches? Teetering mountains of complicated code has built the network of today, but you can push it over with simple human error. And that's bad. Is it reasonable to expect large networking companies to provide SDN leadership? Centralized or distributed controllers? Which is a better fit for SDN and why? If you look at spending, it's not all about cloud providers. It's about the enterprise. So why so much focus on the cloudy corner cases? If a bold new software defined network design gains favor, what does that mean for Ethernet fabrics and related technologies such as TRILL, DCB, 802.1BR, and SPB? Links Bill Koss's Blog Plexxi Jeff Doyle's Books Packet Pushers Podcast on Cisco onePK Ned Hooper Left Cisco   Packet Pushers Podcast no 65:26 http://packetpushers.net/when-projects-attack-coping-with-too-much-to-do/ http://packetpushers.net/when-projects-attack-coping-with-too-much-to-do/#comments Fri, 20 Jul 2012 16:34:49 +0000 Ethan Banks http://packetpushers.net/?p=2278 http://packetpushers.net/when-projects-attack-coping-with-too-much-to-do/feed/ 3 http://packetpushers.net/pq-show-007-cisco-nexus-deep-dive-part-2-virtual-port-channel/ http://packetpushers.net/pq-show-007-cisco-nexus-deep-dive-part-2-virtual-port-channel/#comments Fri, 13 Jul 2012 18:42:02 +0000 Ethan Banks http://packetpushers.net/?p=2234 http://packetpushers.net/pq-show-007-cisco-nexus-deep-dive-part-2-virtual-port-channel/feed/ 7 10GBE,cisco nexus,cisco nexus virtual portchannel,data center,mlag,vpc Tony Mattke, Chris Marget, and Jeff Fry join Ethan Banks for a discussion about deploying virtual port-channel technology with the Cisco Nexus 5K and 7K series of switches in this continuation of the Cisco Nexus deep-dive podcast series. Tony Mattke, Chris Marget, and Jeff Fry join Ethan Banks for a discussion about deploying virtual port-channel technology with the Cisco Nexus 5K and 7K series of switches in this continuation of the Cisco Nexus deep-dive podcast series. What We Discuss What is vPC? What are some use-cases for vPC? vPC terminology: domains, peer links, vPC VLANs, keepalives. The basics of building a vPC switch pair, including the number of links you need to employ for a peer link, and how to design the keepalive link. Links Cisco Virtual PortChannel Quick Configuration Guide Packet Pushers Podcast no 44:27 http://packetpushers.net/show-110-live-from-the-clus-2012-social-media-lounge/ http://packetpushers.net/show-110-live-from-the-clus-2012-social-media-lounge/#comments Sun, 01 Jul 2012 07:00:13 +0000 Ethan Banks http://packetpushers.net/?p=2160 http://packetpushers.net/show-110-live-from-the-clus-2012-social-media-lounge/feed/ 1 ccar,ccie,cisco,cisco cloud services router,cisco live 2012,clus,elitist bloggers,onepk,social media tweetup At Cisco Live 2012 in San Diego, we tweeted that anyone interested could gather at the Social Media Lounge to record a podcast with the Packet Pushers and No Strings Attached shows. Perhaps 20 people showed up at the beginning, At Cisco Live 2012 in San Diego, we tweeted that anyone interested could gather at the Social Media Lounge to record a podcast with the Packet Pushers and No Strings Attached shows. Perhaps 20 people showed up at the beginning, but by the end I think double that number had wandered up and joined the crowd. The show was recorded by Blake Krone and me. We each had hand-held microphones and walked over to folks as they were speaking. There was a lot of good conversation and opinion, along with some laughs. What We Discussed Is Cisco trying to redefine the SDN market with their "network programmability" approach? A Cisco app store & community to encourage onePK adoption seems necessary. Or should we (the networking community) build our own code exchange? Are you a programmer? What languages are your familiar with? Why is an API is better than SNMP? There are security concerns around community-based code sharing. What do we do about that? C & Java are the first languages to support onePK. What languages are next, and when? The Cisco Cloud Services Router: opinions & use-cases. Is there a license-limited version of CSR or some other IOS flavor coming so that engineers can build labs in a Cisco-sanctioned way? Will onePK introduce a whole new class of bugs? What about bugs introduced by users writing their own apps? BreakingPoint - cool product seen on the CLUS "World of Solutions" show floor. CCDE & CCAr: why is a CCIE not a prerequisite? CiscoLive365.com - the place to get video and slide presentations from Cisco Live. Quotable Quotes "Simple is stable." - Marko Milivojevic "You should not care where your workload sits." - Omar Sultan "Complexity goes against robustness." - Tony Mattke "You can take a unicorn to water, but you can't make it drink." - Omar Sultan "When it comes to certifications, it's time we stop drawing a pyramid, and start drawing a tree." - Brandon Carroll "CCIE is not really that difficult. All you have to do is not fail the test." - Marko Milivojevic Voices (in order of appearance) Ethan Banks (co-host for this show) @ecbanks packetpushers.net/author/ecbanks Colin McNamara @colinmcnamara colinmcnamara.com Tom Hollingsworth @networkingnerd networkingnerd.net Blake Krone (co-host for this show) @blakekrone nostringsattachedshow.com blakekrone.com Justin (no last name given) @grinthock Darrel Clute @darrelclute darrelclute.net Jennifer Huber @jenniferlucille jenniferhuber.blogspot.com Ben Story @ntwrk80 showbrain.blogspot.com Kellen Christensen @kdc824 christekit.com Tony Mattke @tonhe routerjockey.com Omar Sultan (Senior Manager for Emerging Technologies, Cisco) @omarsultan blogs.cisco.com/author/OmarSultan Greg Ferro @etherealmind etherealmind.com Marko Milivojevic @icemarkom blog.markom.info Christopher Church @layer_3 layer3.wordpress.com Tristan Rhodes @tristanbob Brandon Carroll @brandoncarroll brandonjcarroll.com There's a few of you I missed because we didn't get an intro from you when recording. You know who you are, so if you want to be listed, please let me know! Packet Pushers Podcast no 59:53 http://packetpushers.net/owning-failure/ http://packetpushers.net/owning-failure/#comments Sat, 30 Jun 2012 15:26:22 +0000 Ethan Banks http://packetpushers.net/?p=2156 http://packetpushers.net/owning-failure/feed/ 5 http://packetpushers.net/cisco-virtual-symposium-on-sdn-recorded-at-clus-2012-with-tech-field-day/ http://packetpushers.net/cisco-virtual-symposium-on-sdn-recorded-at-clus-2012-with-tech-field-day/#comments Fri, 29 Jun 2012 18:58:34 +0000 Ethan Banks http://packetpushers.net/?p=2150 http://packetpushers.net/cisco-virtual-symposium-on-sdn-recorded-at-clus-2012-with-tech-field-day/feed/ 1 http://packetpushers.net/show-109-knowing-why-cisco-certification-roundtable-from-clus-2012/ http://packetpushers.net/show-109-knowing-why-cisco-certification-roundtable-from-clus-2012/#comments Thu, 28 Jun 2012 07:00:24 +0000 Ethan Banks http://packetpushers.net/?p=2051 http://packetpushers.net/show-109-knowing-why-cisco-certification-roundtable-from-clus-2012/feed/ 7 ccde,ccie,ccna,ccnp,ciscopress,clus 2012,it certification,natalie timms,russ white,scott morris,wendell odom In this show recorded at Cisco Live US 2012, we put mics in the middle of a big table and had a Cisco certification roundtable chat. These folks, probably all well-known to the Packet Pushers audience, offered up program updates as well as real-world a... In this show recorded at Cisco Live US 2012, we put mics in the middle of a big table and had a Cisco certification roundtable chat. These folks, probably all well-known to the Packet Pushers audience, offered up program updates as well as real-world advice that will help IT professionals working on certifications. Oh, and we had a lot of laughs along the way - hope you don't mind. ;-) Amy Arnold Ethan Banks Greg Ferro Tom Hollingsworth Scott Morris Wendell Odom Natalie Timms Russ White We  focus on the recent CCIE Security 4.0 track announcement, updates to the CCDE program, study strategies, the true benefits of IT certifications, and what the changing networking landscape means to folks who are just getting started in their networking careers. All in all, this is a fun show with practical value, some humor, and great perspective brought to the table by folks with many years of experience working in and contributing to the networking community. Packet Pushers Podcast no 54:16 http://packetpushers.net/please-check-your-itunes-clus-content-flood-last-week-more-feeds-available/ http://packetpushers.net/please-check-your-itunes-clus-content-flood-last-week-more-feeds-available/#comments Tue, 26 Jun 2012 17:41:13 +0000 Ethan Banks http://packetpushers.net/?p=2132 http://packetpushers.net/please-check-your-itunes-clus-content-flood-last-week-more-feeds-available/feed/ 0 http://packetpushers.net/cisco-nexus-5500-front-panel-port-to-internal-asic-layout-from-brkarc-3452/ http://packetpushers.net/cisco-nexus-5500-front-panel-port-to-internal-asic-layout-from-brkarc-3452/#comments Mon, 25 Jun 2012 19:20:26 +0000 Ethan Banks http://packetpushers.net/?p=2123 http://packetpushers.net/cisco-nexus-5500-front-panel-port-to-internal-asic-layout-from-brkarc-3452/feed/ 7 http://packetpushers.net/pq-show-005-cisco-nexus-updates-with-ron-fuller-sponsored/ http://packetpushers.net/pq-show-005-cisco-nexus-updates-with-ron-fuller-sponsored/#comments Tue, 19 Jun 2012 07:00:54 +0000 Ethan Banks http://packetpushers.net/?p=2084 http://packetpushers.net/pq-show-005-cisco-nexus-updates-with-ron-fuller-sponsored/feed/ 3 10G ethernet,cisco nexus 7000,fabricpath,network fabric,nx-os,ron fuller,trill Ron Fuller, CCIE, CiscoPress author, tweeter, blogger, and Technical Marketing Engineer at Cisco, talked to Ethan Banks and Greg Ferro about announcements made at Cisco Live US 2012 related to the Cisco Nexus product line. What We Discuss - Ron Fuller, CCIE, CiscoPress author, tweeter, blogger, and Technical Marketing Engineer at Cisco, talked to Ethan Banks and Greg Ferro about announcements made at Cisco Live US 2012 related to the Cisco Nexus product line. What We Discuss Supervisor 2 & 2E bring more control-plane power to the Nexus 7000 series. More VDCs, including a special admin VDC. VDC CPU shares have also arrived, which allows a policy to define which VDC gets access to the CPU in the event of CPU congestion. What's the process to upgrade from a Supervisor 1 to a 2 or 2E? It's a disruptive process, but there's a migration guide to be available soon. The importance of blessing a new Nexus 7000 installation with unicorn tears. There's additional FEX density with Supervisor 2 & 2E: 45 today up from 32, and there's more on the roadmap. 7K cards that support FEX are the M1-32, M2-24, and F2-series. FEX density for 5500s with the L3 engine has been increased from 8 to 16. The new 7U Nexus 7004, aimed at shops with limited budgets and at sites with limited space and power. The 7004 has no fabric modules. On other 7000 chassis, there's a 3-stage crossbar fabric: ingress fabric, crosswire fabric, and egress fabric. On the 7004, there's only 2 slots for data forwarding line cards, as the other 2 slots are for sup engines, so the two slots end up wired back-to-back. This results in 440Gbps of bandwidth per slot, down from 550 as compared to other chassis fully loaded with fabric modules. This only impacts the 48 port F2 cards, where you'd have a very slight over subscription - 440Gbps available vs. 480Gbps the F2 is capable of...1.09:1. Wild rumor - stay tuned for virtualized NX-OS. NX-OS 6.1 release notes. Additional hardware support for new sup modules. IP SLA - ability for the Nexus 7000 to take part in the SLA path and probing. Ability to do sampled netflow in F2 - no F2 netflow statistics today, as it's not in the silicon of that linecard. Nexus service modules - ASA, ACE, and NAM are coming. If the Nexus gets service modules, is there any reason to keep the Catalyst 6500 alive? Launched at CLUS 2012 - 10G module of the M2 line card. Added FEX support into the M2 line. What's the customer adoption rate been for FabricPath? What's the difference between FabricPath and TRILL, and where are the TRILL standards heading? Links Cisco Nexus Landing Page Cisco FabricPath Landing Page Cisco Fabric Extender Technology Landing Page Cisco Nexus Supervisor Engines Data Sheet Cisco Nexus 7000 - Technical Overview of Virtual Device Contexts (white paper) Cisco NX-OS Release Notes Jump Page Disclosure Packet Pushers was commissioned by Cisco Data Centre and Virtualisation Business Unit to attend Cisco Live 2012 and discuss Cisco's Software Defined Networking launch as a sponsored service. We have covered the event by recording several shows, attended briefings and more. Thanks to Cisco for sponsoring us and helping us to record and publish the content. Audio Notes On this recording, the headset audio feed was a fail, so we're using the audio feed from the backup mic. We apologize in advance for background noise and mouse clicks you will notice from time to time. Packet Pushers Podcast no 45:11 http://packetpushers.net/pq-show-003-cisco-onepk-with-richard-pruss-sponsored/ http://packetpushers.net/pq-show-003-cisco-onepk-with-richard-pruss-sponsored/#comments Sun, 17 Jun 2012 07:00:40 +0000 Ethan Banks http://packetpushers.net/?p=2077 http://packetpushers.net/pq-show-003-cisco-onepk-with-richard-pruss-sponsored/feed/ 4 cisco one platform kit,cisco onepk,network programmability,richard pruss,SDN Richard Pruss, a Principal Engineer in NSSTG Architecture Group of the Cisco Network Software Services Technology Group, joins Derick Winkworth, Greg Ferro and Ethan Banks in a discussion about Cisco's onePK API strategy to enable SDN and network progr... Richard Pruss, a Principal Engineer in NSSTG Architecture Group of the Cisco Network Software Services Technology Group, joins Derick Winkworth, Greg Ferro and Ethan Banks in a discussion about Cisco's onePK API strategy to enable SDN and network programmability. What We Discuss What is onePK? What's different about onePK versus SNMP? How is onePK impacted by non-modular IOS? On what platforms can you run onePK applications? How many APIs are being released, and in what categories? How did Cisco determine what IOS features to expose first? onePK lets your application act like a peer routing protocol. How's that work? What's the role of security in onePK? How is onePK similar to and different from OpenFlow? What programming languages have access to the onePK libraries today, and which ones are next? Links Cisco onePK Landing Page onePK – Building Applications and Agents on API’s Across Cisco’s Network OS’s (by Richard Pruss) Disclosure Packet Pushers was commissioned by Cisco Data Centre and Virtualisation Business Unit to attend Cisco Live 2012 and discuss Cisco's Software Defined Networking launch as a sponsored service. We have covered the event by recording several shows, attended briefings and more. Thanks to Cisco for sponsoring us and helping us to record and publish the content. Audio Notes At the Cisco Live 2012 show, the Packet Pushers did 2 simultaneous recordings of each show. The primary recording was done with headsets. The secondary was a "backup" using a single mic placed in the center of the conference table. In this recording, the last 3+ minutes of audio are from the backup mic. Packet Pushers Podcast no 25:14 http://packetpushers.net/show-106-cisco-nexus-buyers-guide-deep-dive-series-kickoff/ http://packetpushers.net/show-106-cisco-nexus-buyers-guide-deep-dive-series-kickoff/#comments Sat, 09 Jun 2012 22:23:35 +0000 Ethan Banks http://packetpushers.net/?p=2028 http://packetpushers.net/show-106-cisco-nexus-buyers-guide-deep-dive-series-kickoff/feed/ 4 cisco nexus buyer's guide In this show, Ethan Banks is joined by Tony Mattke, Chris Marget, and Jeff Fry to kick off a deep-dive series about the Cisco Nexus product line. Nexus gear is making frequent appearances in Cisco shops these days, In this show, Ethan Banks is joined by Tony Mattke, Chris Marget, and Jeff Fry to kick off a deep-dive series about the Cisco Nexus product line. Nexus gear is making frequent appearances in Cisco shops these days, as enterprises and service providers refresh their aging Catalyst hardware. The Nexus line keeps growing and changing both in hardware and capability, so we're taking a look at what's going on under the covers, telling the story from our own personal Nexus experience. This first installment is a buyer's guide. We run through all the major Nexus products, and talk through speeds and feeds, power considerations, line card capabilities, costs, market positioning, product licensing, and even touch on the management software. Links Cisco's Nexus Jump Page Packet Pushers Podcast no 86:05 http://packetpushers.net/the-modular-network-in-a-box-what-could-happen-if-sdn-thinks-big/ http://packetpushers.net/the-modular-network-in-a-box-what-could-happen-if-sdn-thinks-big/#comments Wed, 06 Jun 2012 15:51:07 +0000 Ethan Banks http://packetpushers.net/?p=2005 http://packetpushers.net/the-modular-network-in-a-box-what-could-happen-if-sdn-thinks-big/feed/ 14 http://packetpushers.net/network-operations-network-engineer-amazon/ http://packetpushers.net/network-operations-network-engineer-amazon/#comments Tue, 29 May 2012 15:38:34 +0000 Ethan Banks http://packetpushers.net/?p=1971 http://packetpushers.net/network-operations-network-engineer-amazon/feed/ 0 http://packetpushers.net/netprivateer-senior-network-engineer/ http://packetpushers.net/netprivateer-senior-network-engineer/#comments Fri, 25 May 2012 01:59:51 +0000 Ethan Banks http://packetpushers.net/?p=1958 http://packetpushers.net/netprivateer-senior-network-engineer/feed/ 0 http://packetpushers.net/the-packet-pushers-at-cisco-live-us-san-diego-2012/ http://packetpushers.net/the-packet-pushers-at-cisco-live-us-san-diego-2012/#comments Fri, 25 May 2012 01:27:13 +0000 Ethan Banks http://packetpushers.net/?p=1956 http://packetpushers.net/the-packet-pushers-at-cisco-live-us-san-diego-2012/feed/ 13 http://packetpushers.net/show-104-is-sdn-a-trill-killer/ http://packetpushers.net/show-104-is-sdn-a-trill-killer/#comments Wed, 23 May 2012 16:00:16 +0000 Ethan Banks http://packetpushers.net/?p=1948 http://packetpushers.net/show-104-is-sdn-a-trill-killer/feed/ 7 fabricpath,google,openflow,SDN,software defined networking,spb,trill Greg Ferro & Ethan Banks conclude their chat begun in Show 103 - Choking on Cookies, but take the conversation in a different direction. What We Discuss TRILL & SPB - are they competing or complimentary? Or aimed at different markets? Greg Ferro & Ethan Banks conclude their chat begun in Show 103 - Choking on Cookies, but take the conversation in a different direction. What We Discuss TRILL & SPB - are they competing or complimentary? Or aimed at different markets? If SDN really gets a strong foothold in the marketplace because of excellent applications, what might that mean for TRILL and SPB? What has Google *really* demonstrated with their OpenFlow announcement? And what does that mean for the rest of us? If you buy an SDN-based "network-in-a-box" that's a proprietary vendor solution, what happens to your skill set? SDN is early right now. Can we tell where it's going to take the industry? A useful application for SDN: end-to-end flow analysis (instead of point-in-time flow analysis). TRILL would pick up steam if Cisco reduced the prohibitive cost of licensing FabricPath. Links Show 44 - The Case For Shortest Path Briding Fake Name Generator Packet Pushers Podcast no 42:38 http://packetpushers.net/job-opportunity-senior-network-engineerarchitect-ccie-service-provider-core-network-services/ http://packetpushers.net/job-opportunity-senior-network-engineerarchitect-ccie-service-provider-core-network-services/#comments Mon, 21 May 2012 23:26:40 +0000 Ethan Banks http://packetpushers.net/?p=1942 http://packetpushers.net/job-opportunity-senior-network-engineerarchitect-ccie-service-provider-core-network-services/feed/ 1 http://packetpushers.net/a-new-blog-category-jobs/ http://packetpushers.net/a-new-blog-category-jobs/#comments Mon, 21 May 2012 23:06:43 +0000 Ethan Banks http://packetpushers.net/?p=1940 http://packetpushers.net/a-new-blog-category-jobs/feed/ 3 http://packetpushers.net/show-103-choking-on-cookies/ http://packetpushers.net/show-103-choking-on-cookies/#comments Sun, 20 May 2012 21:04:33 +0000 Ethan Banks http://packetpushers.net/?p=1932 http://packetpushers.net/show-103-choking-on-cookies/feed/ 0 browser cookies,Cisco Systems,ethan banks,ghostery,greg ferro,social media Podcast hosts Ethan Banks & Greg Ferro have a good old-fashioned chinwag about things that are on their minds in this, the first of a two-part podcast. Part two should be published later during the week of 20-May-2012 as Show 104. Stay tuned! Podcast hosts Ethan Banks & Greg Ferro have a good old-fashioned chinwag about things that are on their minds in this, the first of a two-part podcast. Part two should be published later during the week of 20-May-2012 as Show 104. Stay tuned! What We Discuss Long-term goals for the Packet Pushers Podcast. How you can stay in touch with the show these days. How we usually record & produce the show. We talk about Cisco: issues of vendor trust, resellers, licensing, and overlapping product choices. The advantages of buying an integrated solution like vBlock. How companies gather information through your browser and use it to build a very personal profile about YOU. Links Ethan's article on Cisco, trust, and brand inertia. Cookie Monster - a manager for the cookies created by the most usual Windows browsers: Internet Explorer, Firefox, Google Chrome, Mozilla and Opera (only basic support for this one). Ghostery - a browser tool available for Firefox, Chrome, Safari, Opera and Internet Explorer. It scans the page for scripts, pixels, and other elements and notifies the user of the companies whose code is present on the page. Packet Pushers Podcast no 42:35 http://packetpushers.net/another-teaser-from-the-packet-pushers/ http://packetpushers.net/another-teaser-from-the-packet-pushers/#comments Fri, 18 May 2012 04:00:05 +0000 Ethan Banks http://packetpushers.net/?p=1924 http://packetpushers.net/another-teaser-from-the-packet-pushers/feed/ 6 http://packetpushers.net/show-102-a-layer-of-indirection-is-mpls-tunneling/ http://packetpushers.net/show-102-a-layer-of-indirection-is-mpls-tunneling/#comments Fri, 11 May 2012 02:00:09 +0000 Ethan Banks http://packetpushers.net/?p=1885 http://packetpushers.net/show-102-a-layer-of-indirection-is-mpls-tunneling/feed/ 10 ethan banks,greg ferro,Ivan Pepelnjak,Marko Milivojevic,mpls,osi model,Petr Lapukov,tunneling Greg Ferro and Ethan Banks dive into a deep, dark hole of nerdery with Ivan Pepelnjak, Marko Milivojevic, and Petr Lapukov to see if we can decide whether or not MPLS is tunneling. We plumb the depths of packet and frame formatting, Greg Ferro and Ethan Banks dive into a deep, dark hole of nerdery with Ivan Pepelnjak, Marko Milivojevic, and Petr Lapukov to see if we can decide whether or not MPLS is tunneling. We plumb the depths of packet and frame formatting, compare and contrast various technologies, toss different scenarios around, contradict one another, and throw buckets of cold water all over the place. In the end, we think we have an answer. So put the kids to bed, cram in your earbuds, and visualize the virtual whiteboard. Close your eyes...focus...there it is! All that's missing is the smell of dry erase markers. What We Talk About In the witty opening banter, we find out Greg is an Interop judge, Petr works on something called "Bing", and Marko is teaching the first CCIE ever a thing or two. Oh, and who WAS the first CCIE anyway? Hint - not our friend Terry. Not quite. From here, the show gets serious, and includes the following topics: Foundations: circuits vs. connections vs connectionless. How is a tunnel different from a virtual circuit? How do we say that a circuit has "state"? We could think of a tunnel as "a layer of forwarding indirection". The tricky business of distinguishing between the OSI model (classical layering) vs. what we normally consider tunnels. Now wait a minute...could MPLS be considered NAT in a certain sense? So...maybe a tunnel is tunnel when you see the same protocol twice in the header. Redefining a tunnel as "a layer of frozen interaction". MPLS is not exactly L2 or L3. It's a total layering violation. How do CRC checks impact our definition of tunneling? Isn't it time for a new networking model? Once we've hammered through all of that, we loop back around to review why we had the chat. The question comes back up - why are we reinventing the wheel in data center networking? Couldn't an MPLS application be written to do many of the same things the explosion of overlay protocols are doing? Or would we have scalability problems?   Packet Pushers Podcast no 68:18 http://packetpushers.net/does-trill-stand-a-chance-at-wide-adoption/ http://packetpushers.net/does-trill-stand-a-chance-at-wide-adoption/#comments Thu, 10 May 2012 07:00:27 +0000 Ethan Banks http://packetpushers.net/?p=1897 http://packetpushers.net/does-trill-stand-a-chance-at-wide-adoption/feed/ 13 http://packetpushers.net/coming-soon-from-the-packet-pushers/ http://packetpushers.net/coming-soon-from-the-packet-pushers/#comments Fri, 04 May 2012 07:00:55 +0000 Ethan Banks http://packetpushers.net/?p=1855 http://packetpushers.net/coming-soon-from-the-packet-pushers/feed/ 11 http://packetpushers.net/fatalism-is-sexy-securitys-new-mindset-of-the-inevitable-hack/ http://packetpushers.net/fatalism-is-sexy-securitys-new-mindset-of-the-inevitable-hack/#comments Sat, 28 Apr 2012 14:46:45 +0000 Ethan Banks http://packetpushers.net/?p=1852 http://packetpushers.net/fatalism-is-sexy-securitys-new-mindset-of-the-inevitable-hack/feed/ 5 http://packetpushers.net/stereotypes-in-the-packetpushers-irc-channel/ http://packetpushers.net/stereotypes-in-the-packetpushers-irc-channel/#comments Fri, 27 Apr 2012 07:00:38 +0000 Ethan Banks http://packetpushers.net/?p=1806 http://packetpushers.net/stereotypes-in-the-packetpushers-irc-channel/feed/ 4 http://packetpushers.net/brand-inertia-is-cisco-your-most-trusted-it-partner/ http://packetpushers.net/brand-inertia-is-cisco-your-most-trusted-it-partner/#comments Tue, 24 Apr 2012 19:44:14 +0000 Ethan Banks http://packetpushers.net/?p=1825 http://packetpushers.net/brand-inertia-is-cisco-your-most-trusted-it-partner/feed/ 23 http://packetpushers.net/certified-ethical-hacker-v7-certification-review/ http://packetpushers.net/certified-ethical-hacker-v7-certification-review/#comments Fri, 20 Apr 2012 04:10:52 +0000 Ethan Banks http://packetpushers.net/?p=1822 http://packetpushers.net/certified-ethical-hacker-v7-certification-review/feed/ 7 http://packetpushers.net/survey-local-networking-user-groups-your-input-requested/ http://packetpushers.net/survey-local-networking-user-groups-your-input-requested/#comments Tue, 17 Apr 2012 17:32:35 +0000 Ethan Banks http://packetpushers.net/?p=1815 http://packetpushers.net/survey-local-networking-user-groups-your-input-requested/feed/ 21 http://packetpushers.net/arista-networks-knows-who-they-are-do-you/ http://packetpushers.net/arista-networks-knows-who-they-are-do-you/#comments Fri, 13 Apr 2012 22:08:29 +0000 Ethan Banks http://packetpushers.net/?p=1809 http://packetpushers.net/arista-networks-knows-who-they-are-do-you/feed/ 5 http://packetpushers.net/show-96-hack-the-hackers-fyodor-on-nmap-the-security-industry/ http://packetpushers.net/show-96-hack-the-hackers-fyodor-on-nmap-the-security-industry/#comments Wed, 04 Apr 2012 17:51:21 +0000 Ethan Banks http://packetpushers.net/?p=1772 http://packetpushers.net/show-96-hack-the-hackers-fyodor-on-nmap-the-security-industry/feed/ 1 brute force attack,gordon fyodor lyon,hack the hackers,honeynet project,ipv6 scanning,ipv6 security,lua,metasploit,nmap,nmap scripting engine,nse,slaac Michele Chubirka (our very own Mrs. Y), Greg Ferro, and Ethan Banks gather *in person* with very special guest Gordon "Fyodor" Lyon. Fyodor is the author of Nmap, for many years the tool of choice to perform network scanning. Michele Chubirka (our very own Mrs. Y), Greg Ferro, and Ethan Banks gather *in person* with very special guest Gordon "Fyodor" Lyon. Fyodor is the author of Nmap, for many years the tool of choice to perform network scanning. The four of us chat about Nmap, being a security practitioner, and goings-on in the security business. What We Discuss Nmap's 15th birthday. The new version of Nmap 5.61 test 5 soon to be released. What does Nmap do? Host detection. OS detection using heuristics and fingerprinting. What's Zenmap? NSE, the Nmap scripting engine. Is it a good or bad thing that other folks bundle Nmap with their products? Nmap's dual licensing scheme (open source vs. commercial entities). Who's working on Nmap these days? What language do you have to know to use NSE? What are the new features we'll see in the upcoming version of Nmap? The trouble with scanning IPv6 address ranges. Why is there a perception that IPv6 is less secure than IPv4? IPv5 trivia. Why have we had so many big security breaches lately? Is there a disconnect between application developers and IT practitioners? Greg's pet theory of active security and passive security. Did you know that Nmap has an tool called Ndiff that will show you variances in scan results from one day to the next? Evading the notice of intrusion detection devices & firewalls. Does it make sense to patrol outside of the perimeter (i.e. an IDS outside the firewall)? The challenge of sorting through huge amounts of log data. Just how do we protect our intellectual property from hackers with abilities like Fyodor's? Are honeypots useful? How well are OS vendors patching themselves, and how much is it helping? Why do we keep working around our own security tools? Links Nmap - free and open source utility for network exploration or security auditing. Zenmap - the official Nmap Security Scanner GUI. Ndiff - a tool to aid in the comparison of Nmap scans. Metasploit - helps security and IT professionals identify security issues, verify vulnerability mitigations, and manage expert-driven security assessments. insecure.org - Fyodor's blog. Nmap Network Scanning: The Official Nmap Project Guide to Network Discovery and Security Scanning - Fyodor's book. Tor Project - Protect your privacy. Defend yourself against network surveillance and traffic analysis. Greg's blog post on IPv5 - yes, really. Thin-slicing - a term used in psychology and philosophy to describe the ability to find patterns in events based only on "thin slices," or narrow windows, of experience (from Wikipedia). The Honeynet Project - to learn the tools, tactics and motives involved in computer and network attacks, and share the lessons learned. Nmap's page on the Google Summer of Code - try coding for Nmap for a summer instead of flipping burgers! Apply by April 6, 2012 to be considered for this summer. twitter.com/nmap facebook.com/nmap Nmap Hackers mailing list Sponsors NEC ProgrammableFlow OpenGear - This week’s show was sponsored in part by Opengear, experts in out-of-band management.  Visit www.opengear.com to learn about secure, next generation management appliances that provide lights out access to network equipment even when the primary link is down.  Tell them you heard of their solutions from Packet Pushers for a free t-shirt. Packet Pushers Podcast no 67:36 http://packetpushers.net/you-cant-build-a-system-in-a-silo-lets-reorganize-it/ http://packetpushers.net/you-cant-build-a-system-in-a-silo-lets-reorganize-it/#comments Tue, 03 Apr 2012 15:03:58 +0000 Ethan Banks http://packetpushers.net/?p=1760 http://packetpushers.net/you-cant-build-a-system-in-a-silo-lets-reorganize-it/feed/ 5 http://packetpushers.net/show-95-security-onion-with-doug-burks-or-why-ids-rules-and-ips-drools/ http://packetpushers.net/show-95-security-onion-with-doug-burks-or-why-ids-rules-and-ips-drools/#comments Sun, 01 Apr 2012 07:00:33 +0000 Ethan Banks http://packetpushers.net/?p=1706 http://packetpushers.net/show-95-security-onion-with-doug-burks-or-why-ids-rules-and-ips-drools/feed/ 3 doug burks,hids,ids,intrusion detection,intrusion prevention,ips,network security,Richard Bejtlich,security onion,snort,suricata Ethan Banks and Michele Chubirka (aka Mrs. Y aka the Network Security Princess) have a relaxed chinwag with Doug Burks, Deputy Chief Security Officer at Mandiant, community instructor for SANS, and the man behind Security Onion. What is Security Onion? Ethan Banks and Michele Chubirka (aka Mrs. Y aka the Network Security Princess) have a relaxed chinwag with Doug Burks, Deputy Chief Security Officer at Mandiant, community instructor for SANS, and the man behind Security Onion. What is Security Onion? To quote Doug's website... Security Onion is a Linux distro for IDS (Intrusion Detection) and NSM (Network Security Monitoring). It's based on Xubuntu 10.04 and contains Snort, Suricata, Sguil, Squert, Snorby, Bro, NetworkMiner, Xplico, and many other security tools, all wrapped up with an easy-to-use Setup wizard. What We Discuss What was the driver that brought about the creation of Security Onion? What security functions does Security Onion include? Why is there such an emphasis on intrusion detection as opposed to intrusion prevention with this distro? How is an IPS like a firewall? Why does it make sense for an enterprise to have an IDS in addition to an IPS? Why does full packet capture matter in an IDS system? What packages are included in the Secuirty Onion distro? How can Secuity Onion be used as a forensic analysis tool? Why should a company that's already invested in commercial IDS/IPS bother with Security Onion? What role does Security Onion play in host-based intrusion detection (HIDS)? How would you size server hardware & storage for a successful Security Onion deployment? When will Security Onion be available in a 64-bit flavor? What's the profile of the typical shop that's deployed Security Onion? Can Security Onion monitor traffic on multiple interfaces simultaneously? What's the difference between a Security Onion "sensor" and "server"? How much data does a Security Onion sensor send back to a server, and what's the impact on WAN utilization? Will there be wireless functionality built into Security Onion in the future? Does Mandiant give Doug much time to work on Security Onion? Can Security Onion be deployed as a virtual machine? Links Security Onion Doug Burks on Twitter TaoSecurity - Richard Bejtlich's blog on digital security Snort - open source network intrusion prevention and detection system OISF - home of Suricata. The Open Information Security Foundation (OISF) is a non-profit foundation organized to build a next generation IDS/IPS engine. OSSEC - open source host-based intrusion detection system Argus - a small, fast, and easily expandable network IDS designed with small to moderate sized networks in mind Bro - powerful network analysis framework that is much different from the typical IDS NetworkMiner - a Network Forensic Analysis Tool (NFAT) for Windows PF_RING - a new type of network socket that dramatically improves packet capture speed Kismet - an 802.11 layer2 wireless network detector, sniffer, and intrusion detection system TCP/IP Weapons School 3.0 - TWS3 as taught by Richard Bejtlich. Is your network safe from intruders? Do you know how to find out? Do you know what to do when you learn the truth? ELSA - enterprise log, search and archive. A centralized syslog framework built on Syslog-NG, MySQL, and Sphinx full-text search. Sponsors NEC ProgrammableFlow Packet Pushers Podcast no 49:08 http://packetpushers.net/a-fun-look-at-workstations-interfaces-for-it-folks/ http://packetpushers.net/a-fun-look-at-workstations-interfaces-for-it-folks/#comments Fri, 30 Mar 2012 07:00:50 +0000 Ethan Banks http://packetpushers.net/?p=1684 http://packetpushers.net/a-fun-look-at-workstations-interfaces-for-it-folks/feed/ 2 http://packetpushers.net/use-a-cisco-nexus-5k-as-a-core-instead-of-a-7k-isnt-that-crazy/ http://packetpushers.net/use-a-cisco-nexus-5k-as-a-core-instead-of-a-7k-isnt-that-crazy/#comments Wed, 28 Mar 2012 19:27:10 +0000 Ethan Banks http://packetpushers.net/?p=1738 http://packetpushers.net/use-a-cisco-nexus-5k-as-a-core-instead-of-a-7k-isnt-that-crazy/feed/ 28 http://packetpushers.net/meatspace-packet-pushers-network-beers-at-the-san-jose-doubletree-27-march-2012-6pm/ http://packetpushers.net/meatspace-packet-pushers-network-beers-at-the-san-jose-doubletree-27-march-2012-6pm/#comments Sun, 25 Mar 2012 18:53:48 +0000 Ethan Banks http://packetpushers.net/?p=1731 http://packetpushers.net/meatspace-packet-pushers-network-beers-at-the-san-jose-doubletree-27-march-2012-6pm/feed/ 0 http://packetpushers.net/show-92-hp-tippingpoint-secure-virtual-framework-with-sanjay-raja-sponsored/ http://packetpushers.net/show-92-hp-tippingpoint-secure-virtual-framework-with-sanjay-raja-sponsored/#comments Sat, 17 Mar 2012 20:00:47 +0000 Ethan Banks http://packetpushers.net/?p=1703 http://packetpushers.net/show-92-hp-tippingpoint-secure-virtual-framework-with-sanjay-raja-sponsored/feed/ 1 cloud security,hp,intrusion prevention,ips,sanjay raja,secure virtual framework,tippingpoint,virtualization,vmware The prime Pushers Ethan Banks and Greg Ferro chat with HP Security's Sanjay Raja in this sponsored podcast about the TippingPoint Secure Virtual Framework (SVF). Sanjay Raja is a Product Marketing Manager with the TippingPoint organization, The prime Pushers Ethan Banks and Greg Ferro chat with HP Security's Sanjay Raja in this sponsored podcast about the TippingPoint Secure Virtual Framework (SVF). Sanjay Raja is a Product Marketing Manager with the TippingPoint organization, and describes in detail how SVF integrates into your VMware environment. What We Discuss Inspecting traffic sourced from VMs, when those VMs don't always live in the same physical place. Keeping the same security policy applied to a virtualized environment as would have been applied to a physical environment. Topology discovery and integration with Virtual Management Center. Firewalling VMs from other VMs. Shunting traffic to an external IPS device via low-latency tunneling. New vShield APIs that TippingPoint is creating with VMware via an exclusive partnership. The challenge of virtualizing IPS functionality without consuming all the resources of the cluster being protected. How to integrate SVF into an environment that's only partially virtualized. What "next generation IPS" really means, and how TippingPoint is a part of that space. Why you care about TippingPoint's DV Labs vulnerability discovery team. Does SVF allow inside hosts and DMZ (read: "Internet-facing") hosts to coexist on the same VMware cluster? What's the redundancy/resiliency architecture for SVF? How is TippingPoint SVF integrated with the other HP Security business units like Fortify and ArcSight? Links Secure Virtual Framework HPEnterpriseSecurity.com Solid Reasons for Securing the Cloud (Sanjay Raja) How are you dealing with the new PCI standards covering virtualization and cloud security? (Sanjay Raja) Packet Pushers Podcast no 38:35 http://packetpushers.net/quick-overview-cisco-gss-4492r-global-site-selector-gslb-dns-appliance/ http://packetpushers.net/quick-overview-cisco-gss-4492r-global-site-selector-gslb-dns-appliance/#comments Fri, 09 Mar 2012 18:30:42 +0000 Ethan Banks http://packetpushers.net/?p=1674 http://packetpushers.net/quick-overview-cisco-gss-4492r-global-site-selector-gslb-dns-appliance/feed/ 3 http://packetpushers.net/packet-pushers-has-an-irc-channel-on-freenode-packetpushers/ http://packetpushers.net/packet-pushers-has-an-irc-channel-on-freenode-packetpushers/#comments Wed, 07 Mar 2012 04:18:23 +0000 Ethan Banks http://packetpushers.net/?p=1670 http://packetpushers.net/packet-pushers-has-an-irc-channel-on-freenode-packetpushers/feed/ 2 http://packetpushers.net/making-effective-use-certification-exam-guides-reading-aint-enough/ http://packetpushers.net/making-effective-use-certification-exam-guides-reading-aint-enough/#comments Wed, 29 Feb 2012 08:00:12 +0000 Ethan Banks http://packetpushers.net/?p=1651 http://packetpushers.net/making-effective-use-certification-exam-guides-reading-aint-enough/feed/ 9 http://packetpushers.net/show-90-talking-career-with-todd-lammle/ http://packetpushers.net/show-90-talking-career-with-todd-lammle/#comments Tue, 28 Feb 2012 17:50:26 +0000 Ethan Banks http://packetpushers.net/?p=1612 http://packetpushers.net/show-90-talking-career-with-todd-lammle/feed/ 15 career,certification,e-books,e-learning,todd lammle Trainer, author, and long-time network industry veteran Todd Lammle joins Ethan Banks and Greg Ferro for a chat about the good ol' days, the days ahead, and how to make it in the networking business. Todd's worked at some legendary companies like Atari... Trainer, author, and long-time network industry veteran Todd Lammle joins Ethan Banks and Greg Ferro for a chat about the good ol' days, the days ahead, and how to make it in the networking business. Todd's worked at some legendary companies like Atari and Xerox. He's been around the industry for a long time, and worked hard to make a go of it. Today, he's an independent trainer, consultant, and author. And did you know he's never played a video game? We have a great chat with Todd, who opines about the state of the book publishing business, e-learning, staying focused, and how to have a successful career. We hit the following topics along the way. Todd, how did you get started in networking? How did you transition into training and writing? Luck vs. self-discipline – which is more important and why? Is blogging a waste of time? What about social media? Physical books vs. e-books & e-learning. Does it matter? A lot of people think certifications are the answer to IT success. Are they? Why has it gotten so much harder to keep up with technology? What are the up-and-coming skills someone in networking should focus on to stay relevant? When it is time to move on to a different employer? What does cloud computing really mean for the networking industry? How does someone manage to earn a certification when they also have a full-time job and a family? What are some techniques to master the information required to pass a certification exam? Links Tips On Getting Things Done For The Person Already Stretched (Ethan's Personal Blog) Todd Lammle on Twitter, Facebook, and YouTube. Sponsors NEC ProgrammableFlow Packet Pushers Podcast no 66:32 http://packetpushers.net/kindle-fire-first-impressions/ http://packetpushers.net/kindle-fire-first-impressions/#comments Thu, 23 Feb 2012 20:21:16 +0000 Ethan Banks http://packetpushers.net/?p=1636 http://packetpushers.net/kindle-fire-first-impressions/feed/ 12 http://packetpushers.net/show-87-a-sip-of-voice/ http://packetpushers.net/show-87-a-sip-of-voice/#comments Sun, 12 Feb 2012 20:38:42 +0000 Ethan Banks http://packetpushers.net/?p=1596 http://packetpushers.net/show-87-a-sip-of-voice/feed/ 1 ipt,sip,sip trunking,tdm,voip The Packet Pushers voice crew reassembles, this time for a discussion of SIP trunks. Erik Peterson, Amy Arnold and Tom Hollingsworth are the technical talent this week, while Ethan Banks hosts and tries to keep up with the conversation without going, The Packet Pushers voice crew reassembles, this time for a discussion of SIP trunks. Erik Peterson, Amy Arnold and Tom Hollingsworth are the technical talent this week, while Ethan Banks hosts and tries to keep up with the conversation without going, "Huh?" too many times. Hey, we can't all be voice engineers. ;-) SIP gets a pretty good look from us as we take on the following talking points: What’s SIP stand for, and what's it used for? What are the common alternatives to SIP, and why is SIP preferred? What sorts of widely recognized hardware/software uses SIP? How does SIP work? Implementing SIP trunking in the enterprise for PSTN access. What should enterprises be considering when planning a transition to SIP? What is a Session Border Controller? What is SIP normalization, and when does it need to be used? SIP applications in production networks. SIP troubleshooting tools. (Packet captures, ladder diagrams, per call debugging, and common show & debug commands.) How do I learn more about SIP? (Read Tom's review of the CiscoPress title "SIP Trunking".) We hope you enjoy this show, and don't forget all of the different ways that you can follow the Packet Pushers to keep up with the content generated by our community. Packet Pushers Podcast no 57:29 http://packetpushers.net/good-habits-for-basic-ethernet-switchport-provisioning-in-a-cisco-ios-environment/ http://packetpushers.net/good-habits-for-basic-ethernet-switchport-provisioning-in-a-cisco-ios-environment/#comments Sat, 11 Feb 2012 21:04:58 +0000 Ethan Banks http://packetpushers.net/?p=1501 http://packetpushers.net/good-habits-for-basic-ethernet-switchport-provisioning-in-a-cisco-ios-environment/feed/ 25 http://packetpushers.net/understanding-when-a-cisco-asa-nat-rule-can-override-the-asa-routing-table/ http://packetpushers.net/understanding-when-a-cisco-asa-nat-rule-can-override-the-asa-routing-table/#comments Tue, 07 Feb 2012 21:38:59 +0000 Ethan Banks http://packetpushers.net/?p=1576 http://packetpushers.net/understanding-when-a-cisco-asa-nat-rule-can-override-the-asa-routing-table/feed/ 8 http://packetpushers.net/show-86-connect-to-the-ipv6-internet-for-free-using-tunnelbroker-net/ http://packetpushers.net/show-86-connect-to-the-ipv6-internet-for-free-using-tunnelbroker-net/#comments Sat, 04 Feb 2012 22:34:07 +0000 Ethan Banks http://packetpushers.net/?p=1564 http://packetpushers.net/show-86-connect-to-the-ipv6-internet-for-free-using-tunnelbroker-net/feed/ 11 6in4,AAAA,carrier grade nat,hurricane electric,ipv6,ipv6 prefix translation,Owen DeLong,tunnelbroker.net Hurricane Electric's Owen DeLong joins Ethan Banks and Greg Ferro to discuss TunnelBroker.net. What's TunnelBroker.net? It's a free service from Hurricane Electric that lets you connect to the IPv6 Internet across an IPv4-only connection. Hurricane Electric's Owen DeLong joins Ethan Banks and Greg Ferro to discuss TunnelBroker.net. What's TunnelBroker.net? It's a free service from Hurricane Electric that lets you connect to the IPv6 Internet across an IPv4-only connection. Want to get started with IPv6? This is a great way to go, not only for the connectivity, but also for the IPv6 education Hurricane Electric offers. We keep the show pretty on-topic, and cover the following information. Who is Hurricane Electric? In simple terms, what's the TunnelBroker.net service? Are these "real" routable IPv6 address blocks HE is issuing? Why is HE offering this service (a) at all and (b) for free? Who is eligible to use TunnelBroker.net? Why bother? Isn't carrier grade NAT going to save us all? There are several types of IPv6 over IPv4 tunnels. What kind of tunnel is tunnelbroker.net using, and why was this type chosen over others? What sorts of devices can successfully bring up an IPv6 tunnel to HE? What sort of tunnel termination device is on the HE side? Is it redundant/resilient? In what way? Explain the tunnelbroker.net provisioning process. Is it automated or are there humans involved? Once the tunnel is up, what can you do with it? Can end users do anything crazy like advertise their own RIR-assigned IPv6 allocation to HE via BGP through the tunnel? Or nail up 2 tunnels to HE to have redundant virtual links for their IPv6 block? What happens if the user's IPv4 tunnel endpoint is dynamically assigned, and the address changes? How does a person advertise their IPv6-enabled service with DNS? What resources would you recommend for a person trying to get smart about IPv6? What's a good strategy for a business looking to do IPv6 multihoming? Is IPv6 prefix translation just a lame way for carriers to get out of upgrading their equipment? LINKS Carrier Grade NAT 6in4 Quad-A DNS Records (RFC3596) IPv6 Prefix Translation (IETF Draft) www.theipv6experts.net - where Owen blogs...you know...once in a while. Packet Pushers Podcast no 39:27