shef

На тему Cisco — понятие растяжимое ;) Вот, это мой список основной. Выбирай то, что нравится.

CCIEBlog's
Bridging the gap between CCIE RS and SP
CCIE Dreamer: Service Provider
CCIE Journey
CCIE Lab Preparation
CCIE Pursuit
Internetwork Expert's CCIE Blog
Matt Hill CCIE
Stephen Bowes CCIE SP Lab Blog
steverossen.com
The IPexpert Blog
6200networks.com
Cisco MARS Blog
Cisco NAC Appliance Blog
Official Cisco Blog's
Should Have Gone With Cisco
Tips and Video Tutorials — Linux .: Cisco :. VOIP
IPv6

IPv6 — NextGen Internet

Data Center
blog.scottlowe.org
Colin McNamara — CCIE 18233, RHCE, GCIH, CCVP, GEEK
Data Center Knowledge
Data Center Networking
TelecomBloger.ru

Juniper
Burning With The Bush

Networkers

A Networker Blog
Aaron's Worthless Words
Daniel Ginsburg's blog
Dave Rusin's Telecommunications Industry Blog
debugall
don't panic
inevitable
IP Stories
jdoyle's blog
JUNOCIS
MPLSVPN
My Etherealmind
Networkers-online.com
PacketLife.net Blog
Routing Freak!
Technicast.net
Terry's Blog
Блогосайт А.Кипчатов