Saturday, 31st July 2010.

I’ll be speaking at Sharkfest ‘08

Posted on Tuesday, 25th December 2007 by sean

(cross posted from my blog)
I’m giving 2 talks on using Wireshark to expose VoIP problems at Sharkfest ‘08 (schedule). Details are sketchy, I think one of the talks is more of a hands on lab, the other is me talking. I’ve expanded on my techniques from the Linux Journal article I wrote [...]

Posted in General | Comments (0)

Using a 3750 to test cables

Posted on Friday, 21st December 2007 by sean

The 3750 (and it would appear, the 3560s, 4500s, and 6500s) have an integrated Time Domain Reflector which is used to test cables associated with a port.
http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/release/12.2_25_see/command/reference/cli3.html#wp2168243
Today I was troubleshooting a problem at a newly renovated remote office with an IP phone that would power up but not boot. After swapping cables and phones, [...]

Posted in Switching | Comments (1)

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