Packet Travel Guide
A journey of the SYN's, the FIN's, and everything in between.
Sunday, March 1, 2015
Going #VIRL
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I've been playing with a new tool in my networking toolkit lately: Cisco VIRL. It stands for Virtual Internet Routing Lab, and it's ...
Thursday, August 14, 2014
And we're back.
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After a very long intermission, I have decided to re-launch this blog. A lot has changed this year, including my employment. Now that I am s...
Thursday, November 14, 2013
Quickly calculating subnets in your head
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Subnetting is often a tricky stumbling point for those who are either just getting started in networking, or even for long-time admins who h...
Thursday, August 1, 2013
Replacing a failed VSS supervisor
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Several years ago now, Cisco introduced the Catalyst 6500 "Virtual Switching System" (VSS), and it has become a very popular deplo...
Thursday, July 25, 2013
Determining exact route when using ECMP
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Many enterprise Cisco networks take advantage of multiple, redundant routed paths between routers or layer-3 switches. Certain routing proto...
Tuesday, July 9, 2013
Linux software for networking geeks
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Sometimes I feel that without the ability to run Linux, my work life would be much harder. Not that I use Linux 100% of the time or anything...
Sunday, June 30, 2013
Lab: Policy-based routing (Part 2)
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Introduction This lab is the continuation of our previous PBR lab, so if you haven't read through it yet, please read Lab: Policy-base...
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