[c-nsp] Network Topology Mapping

[Roger Oliver]

Maybe not the best way but it has worked for me in the past. 
 
Enable CDP on all your network devices (Just for a little whlie).
 
Now logon to each record the "CDP neighbor detail" output
 
Pick a router/switch say "core-1" 
How many CDP neighbors? 
Which ports are they connected to? 
Draw these connections on paper this is just a rough draft so a big box with lines and labels is fine.
 
Once you've done that pick one of these neighbors and see what they see and so on. 
 
There are I am sure tones of better ways to do this. But when I go somewhere to consult and they don't have clear documentation this is how I get started. 
 
I'm very interested to hear what others do.

________________________________

From: cisco-nsp-bounces at puck.nether.net on behalf of Sami Joseph
Sent: Sun 10/28/2007 12:30 AM
To: cisco-nsp at puck.nether.net
Subject: [c-nsp] Network Topology Mapping



Hello,

I have a corporate network with 6500s as core and 3560s as access, IP phones
and a lot of other routers and PIXs.

I need to have a full detailed network documentation and mapping of topology
because we have such a big network a no documentation which always slows our
troubleshooting.

I am looking for guidance from you guys on what is the best way/tool/process
to do it from your experience?

any templates for the documentation?

Thanks,
Sam
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