Show 17 – Big Hot and Heavy Switches – Part 2

A detailed look at the Big, Hot and Heavy Ethernet Switches with a large crew to talk about their practical experiences on design, selection and performance of Cisco Nexus switches. The result ? We don’t think the Nexus switches are very exciting.

Due to people commitments we recorded a double length show which will be released in two parts. This is Part 2 and Part 1 was released next weekend.

What You’ll Hear…

  • On the increase in 10GbE in the Data Centre and what’s driving that. And looking at why we aren’t comfortable with the HP Flex-10 networking module for their blade servers.
  • We are planning on using IP Storage, after consulting with the Server team. The cost of FC doesn’t work for us, and FCoE still isn’t here.
  • A look at transient traffic loads and how the deployment of VMware DRS changes the way our backbone looks. The importance of dynamic traffic flows to VMware and what we need to do to support that.
  • We take a detailed and critical look at what Cisco doesn’t tell you about the Nexus 7000 – the bad things, the missing features such as QoS, MPLS and lack of value. Not to mention the generally underwhelming performance of the product. Also, it’s big, it uses a lot of power and runs hot.

You can find Jeremy Filliben at and @jfilliben.

You can find Steve Rossen on @steve

You can find Ivan Pepelnjak at and on @ioshints.

IOS Hints Live – San Jose September 2010

You can book to join the event at There are only a limited number of seats at this unique event where Ivan Pepelnjak and Greg Ferro will both be available to discuss, review and develop your designs.


Follow the Packet Pushers on Twitter (@packetpushersGreg @etherealmindDan@rovingengineerEthan @ecbanks) and send your queries and comments about the show to [email protected].  We want to hear from you!

Greg Ferro
Greg Ferro is a Network Engineer/Architect, mostly focussed on Data Centre, Security Infrastructure, and recently Virtualization. He has over 20 years in IT, in wide range of employers working as a freelance consultant including Finance, Service Providers and Online Companies. He is CCIE#6920 and has a few ideas about the world, but not enough to really count. He is a host on the Packet Pushers Podcast, blogger at and on Twitter @etherealmind and Google Plus.
Greg Ferro
Greg Ferro
Greg Ferro
Greg Ferro

Latest posts by Greg Ferro (see all)

  • #21217

    Regarding the N7k and missing features, as was mentioned you need to remember what it is – a DC switch. It wasn't designed to do MPLS.

    It's scalable to 15 (fifteen)Tbps with future fabric modules. Current fabric modules give 46Gps per slot, per installed fabric module. So in an 18slot chassis with 5 fabric modules it can forward a maximum of 3.68Tbps.

    • Anon

      Yeah – oversubscribed to pieces :) MPLS in the DC is inevitable

  • MH

    Really appreciate the time you guys put into this.

    Are you using Skype?

    Whatever it it is rubbish.

    • Greg Ferro

      I had some problems with this recording, sorry about that.