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cdpv2
2007 Feb 28
1
OT: Patch to OSS app for CDP without a Cisco switch - TESTERS WANTED
...ch doesn't support CDP?
I grabbed cdp-tools and started playing around. You will need to
install libpcap (and headers if you are using package management) and
libnet (preferably 1.1 and headers).
I got to work on cdp-tools and found that there were several problems:
- It only advertised CDPv1 (current is CDPv2)
- It didn't support Voice VLANs
- It didn't properly support native VLANs
- It didn't properly support advertising duplex
I was fortunate enough to have access to some real Cisco switches.
I was able to grab the CDP advertisements (after defining a voice
vlan) and...