It was a year or two ago that Cisco split up the CCNA into two exams. (ICND and INTRO). Yesterday it was announced that things were changing again into ICND1 and ICND2 exams along with creating another certification. Passing just the first ICND makes you a Cisco Certified Entry Network Technician, then passing [...]

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Earlier I looked at stub areas. One problem we found was that you can’t have an ASBR in a stub area — no “redistribute static” on any external links. What a pity!
Not so stubby areas get around this by allowing the ASBR to exist and propagate LSAs. The problem is that stub [...]

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I was excited to receive Practical Packet Analysis in the mail. A book on the topic of packet analysis is one of those “gee, I wish I had thought of that!” type of things.
PPA is all about using Ethereal/Wireshark to solve network problems. While not explicitly written as such, the book is done [...]

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I’ve got a bunch of books on my shelf I’ve been meaning to review, but I really wanted to mention the CCNP BSCI Portable Command Guide. It was sent to me a few weeks ago and I’ve recently had the chance to go through it.
It’s a lot like O’Reilly’s cookbook series, but more concise. [...]

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Earlier I gave a description of OSPF special areas (stubby, not so stubby, totally stubby). Here’s some examples to back it up.
I use dynagen to simulate my environment, it’s so good I ended up selling my routers! Here’s the config:

autostart = false
[localhost]
[[7200]]
image = ..\images\c7200-jk9s-mz.122-40.bin
[...]

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