Internets of Interest for 7th March 2013


Collection of useful, relevant or just fun places on the Internets for 7th March 2013 and a bit commentary about what I’ve found interesting about them: — Ramblings of a Network Engineer in the trenches…

To wrap it up for now, it seems as if what I’ve been dealing with is not a case of burnout at all; it is boredom. And that, my friends, is much more insidious. I’m much more aware now of all that boredom can do: It drags you down, it robs you of the joy of moving forward, and it takes the fun out of what used to sustain you.

The good news, however, is that with this awareness comes a better, move revived focus, and I’m starting to come alive again. I’m starting to look forward to the conventions, to the new technologies, and to some of the inevitable arguments and technology holy wars. In the meantime, I’m off to reset some passwords and work on some budgets… at least until the next big thing comes along.

EMC loses half a BEEELLION on VCE … but it’s NOT what it seems • The Register – Article from the The Register about the fact VCE might actually be making a profit :

So $285.8m sales to VCE and $244.9m losses from VCE in 2012, making a net $40.9m profit or surplus. Unless our accounting math and understanding is way off-beam, VCE – cumulative losses not withstanding – looks a good business for EMC

Technology Short Take #30 – – The weblog of an IT pro specializing in virtualization, storage, and servers – Scott Lowe produces a regular collection of high quality links – add him to your RSS feed because it’s always good.

Welcome to Technology Short Take #30. This Technology Short Take is a bit heavy on the networking side, but I suppose that’s understandable given my recent job change. Enjoy!

Flexible Data Centre Fabric – FabricPath/TRILL, OTV, LISP and VXLAN – This is the PDF of a presentation given by Ron Fuller from Cisco on the FabricPath, VXLAN, LISP. If you are into Cloud Networking then this is a MUST READ. (note, this is not for virtualization networking – that’s a different problem….).

RFC 6250 – Evolution of the IP Model – There is a lot of collected wisdon in the IETF standards and this is one of those that should be mandatory reading for every network engineer. This is just one piece of fine wisdom:

3.1.6. Claim: Multicast/broadcast is less expensive than replicated unicast

Some applications and upper-layer protocols that use multicast or broadcast do so not because they do not know the addresses of receivers, but simply to avoid sending multiple copies of the same packet over the same link.

In wired networks, sending a single multicast packet on a link is generally less expensive than sending multiple unicast packets. This may not be true for wireless networks, where implementations can only send multicast at the basic rate, regardless of the negotiated rates of potential receivers. As a result, replicated unicast may achieve much higher throughput across such links than multicast/broadcast traffic.

Brocade Harlem Shake (Zom-Bee Mixdown) – YouTube – Brocade stafff doing a networking version of the Harlem Shake meme – nicely done. 47 seconds.

Telephone Wires over New York – Retronaut – Photos of overhead telephone lines in New York 1887-1888. It’s a reminder why we invented mulitplexers.

  • marc abel

    Some really good links here. I especially enjoyed the Flexible Data Center Fabric presentation. Although I have to say, I STILL don’t understand the use case of LISP.