Most interesting article in this batch: Ethernet Taps - Don't Get Me Started by Chris Marget, focusing on Ethernet taps: passive, active, aggregators, L1 switches ...
Possibilities of OpenFlow/SDN Applications: Jason listed five very interesting applications that could benefit from OpenFlow/SDN. The gotcha - having per-flow state anywhere close to the network
core will never scale.
Email Alerts on Interface State Changes: Arista's EOS has something similar to Cisco IOS Event Manager … the "only"
difference is you can use Bash, Perl or Python instead of Tcl or something resembling
Basic from ZX81 (aka EEM applets).
Nexus vPC Orphan Ports: Orphan ports (servers connected to just one of the switches in an MLAG pair) are a
major pain … but I never realized the attached servers could experience a total
disaster if the vPC peer link fails.
Notes on Scalability: I know I'm preaching to the wrong choir here, but if you do manage to push these ideas
across to the apps development groups, your life will be so much easier.
The Ascendancy of the Application Layer Threat: In the never-ending tug-of-war, the DoS attacks have moved from TCP stacks to HTTP
servers, requiring a different type of protection - load balancers (oops, Application
Delivery Controllers) instead of firewalls.
Disabling MAC Learning on 7124/48 S/SX: You want to turn your low-latency 10GE switch into a hub? No problem, Arista provides
an EOS extension that can meet those "special needs".
What Does FCoE Have To Do With VM Mobility?: You know I'm constantly ranting about the futility of unlimited VM mobility. Scott
Lowe has described the storage perspective, and it looks as futile as the networking
Internet and IPv6
ISP Column - January 2012: Another Geoff Huston's article full of statistics, some of them very interesting,
others less so. The most relevant one: prediction of IPv4 exhaustion date by region
Why Your Network Should Go IPv6 Only: A well-argumented push for IPv6-only access networks. Must read.
Security and VPNs
The Fundamental Problem with Traditional Inbound Protection: Yet another article with the now-familiar theme: firewalls can't protect us any longer
because most of the attacks happen above HTTP.
MPLS L3VPN and Summarized Loopback Routes: A great (and lengthy) explanation of why we shouldn't summarize loopbacks in MPLS/VPN
networks by my good friend @icemarkom. Particularly loved the static FEC-to-label
bindings at the end ... if only he would add a few static MPLS labels in the P-routers
It Depends: You might have thought "it depends" is a simple cop-out answer. Think again ... after reading this article.
Welcome to the Jungle: A fantastic article - starting with modern computer architectures, moving through
the "end of Moore's law", explaining why multi-core iPad 2 is part of the
same trend as AWS ... and it goes on and on and on ...
On insecurity and writing: This is a must-read for all my friends who endlessly hesitate trying to decide whether
to write another blog post or not. You know who you are ;)
Successfully Managing Talented Technical People: Another large dose of commonsense from Ethan Banks. Highly recommended reading.
Call a Spade a Spade: Fancy marketing terminology is obviously not new. Ted Nelson was writing about it
And don't forget: interesting links are now available as a shared Evernote notebook. Enjoy!