Redundancy is must for ISP in Core and also its equally important for Enterprise to have network up always thus resulting in zero business impact due to network outage. There are different scenarios of failover mechanism depending upon the requirement. First of its kind is Dual POP Dual last mile Dual CE (DPDLDC). It provides…
Archives for November 2016
Why design simplicity is bad for your network
Recently I saw the question posed at Network Field Day about why LTE providers can deliver bandwidth to millions of users and “it just works” while delivering bandwidth on the enterprise LAN is still problematic. It’s a great question and one that is not asked often enough when comparing the way ISPs build networks to…
JUNOS: Useful Show Commands to Capture Data for Verification and Troubleshooting – Part 2
In continuation of Part1, Part 2 of useful show commands will be focusing little bit more related to troubleshooting tools available in JUNOS local on the router. In any case, do not forget to use “set cli timestamp” to correlate the data and related events. If you would like to find out the configuration knob…
SolarWinds NPM 12 NetPath
I’ve been writing a bit on SolarWinds’ Thwack site lately about distributed monitoring of application performance on the network. The default thinking for many networking professionals still appears to work in terms of centralized observation of devices and interfaces, so I figured the topic could use a little bit of a boost. Thursday morning at…
Scale-Out Storage Through Disaggregation With DriveScale
DriveScale offers scale-out storage with flexibility for distributed computing environments. How? By disaggregating disk from server.
RSVP-TE Protocol Deep Dive: Part 2
Continued from Part 1… RSVP-TE Hello Protocol (Hello, It’s ME..) So we discussed earlier that how RSVP is a soft-state protocol and needs periodic refresh messages (PATH and RESV) to maintain the session state. Now lets say If a Node goes down for whatever reason, we have to wait until the refresh messages are timed…
RSVP-TE Protocol Deep Dive: Part 1
A while back, I wrote few articles on MPLS-TE primarily focused from a design perspective but I didn’t really covered much from a protocol perspective. https://packetpushers.net/mpls-te-design-part-1/ https://packetpushers.net/mpls-te-design-part-2/ https://packetpushers.net/mpls-te-design-part-3/ So it’s time to fix that and we will try to take a deeper look into the RSVP-TE from a protocol perspective and my assumption here is that…
Back to Basics: Label Distribution and Assignment Modes
In this blog, I will briefly touch at the various Label Distribution and Assignment Modes. While writing a blog on another topic, I wanted to include details about various label distribution and assignment modes and I realized that this is such a fundamental topic, it deserved its own post. Terms: Upstream: It is the direction…
Igneous Systems – On Premises, Cloud Managed, Scale-Out Storage
Igneous Systems storage delivers scale-out storage on-premises as a turnkey, subscription-based service.
What People Get Wrong About SnapRoute’s FlexSwitch
Disclosure: I’m the networking co-chair at the Open Compute Project and I work for Cumulus Networks in my day job. The opinions in this post are all mine, though. Enjoy. Howdy. Over the last several weeks, we’ve seen a lot of press releases around a small networking startup called SnapRoute and its software stack, FlexSwitch….
Improving Stateful Container Storage with StorageOS
StorageOS brings enterprise storage features and container flexibility to stateful container operations.
Startup Barefoot Networks Wins Investment From Chinese Internet Giants
Barefoot Networks, a startup developing programmable networking chips, announced a $23 million investment from Chinese Internet giants Alibaba and Tencent.
The Job Search: Getting Started
Looking for a new job requires skills that we rarely use in our day-to-day careers. I’m on the job market myself at the moment, and I thought it would be helpful to share my experiences and observations about the job search, both as a seeker and as someone who has hired junior engineers. Step one…
Why Can’t We Change The Network?
The network is difficult to change because it’s expensive, complex, and brittle, and outages directly affect the business.
Mellanox Announces 200Gb InfiniBand Switches, Network Adapters & Cables
Mellanox has announced new HDR Infiniband switches, adapter cards, and cables with 200Gbps throughput. Products will be available in early 2017.
Networks Are Obsolete, Insecure and Its not Getting Better
Its a sad picture of networking in general that many of devices are obsolete, insecure and difficult to own.
Two Network Management Startups Point The Way Up SDN Mountain
Startups Veriflow and Forward Networks may provide the visibility and operational stability to enable network operators to climb toward SDN.
Snapshot: Do People Kill Productivity?
People are the biggest distraction at work, according to a quick Packet Pushers survey, beating out social media and even cat photos. Are we are own worst enemy when it comes to productivity?
Go Deeper On Networking, Or Become More Well-Rounded?
Lewis tells us… He’s been in IT for 5 years, and a network engineer for half of that time. He’s a CCNP interested in SDN. He’s thinking about VCP6-NV, but isn’t sure he has a use-case. He’s considering CCIE R&S, but also looking into Microsoft & Linux certs. Q: “There is such a large amount…
Raspberry Pi Cisco Configuration Device
At work we have many routers and switches, and we have highly skilled people who spend a lot of time configuring replacement devices often through a technician’s laptop who is on-site. I wondered if there was a better way so that only the tech needed to be involved. Come to find out when an unconfigured…
Open Optical & Facebook Voyager
Facebook is working with the Telecom Infra Project, a consortium of manufacturers and component makers building a commoditized DWDM switch over the next couple of years.
4 Possible Outcomes For Brocade’s IP Networking Business
What will happen to Brocade’s IP networking business? Here’s four possible options.
OpenSwitch Switching To Dell EMC & SnapRoute
The OpenSwitch Project, which is developing an open source network OS, has announced new contributions from Dell EMC & startup SnapRoute. Code from these contributors will serve as the core of OpenSwitch.
The Arista Strategy Q3 2016: An Analysis
Arista published its Q3 results yesterday and presented interesting highlights to investors. I’m going to pick a few and discuss them here.
Enterprise IT: Too Expensive To Operate
Enterprise IT is too expensive. We need simpler products with fewer features that are easier to buy and easier to operate.
