[nsp] TLV type 0x12 and 0x13 in CDPv2?

From: Gert Doering (gert@greenie.muc.de)
Date: Sun Apr 14 2002 - 12:08:51 EDT

Hi,

saw the following on one of our Cat5500 switches today (that is:
tcpdump'ing CDP packets coming from there):

18:04:45.202106 CDP v2, ttl=180s
        01/15 DevID '067504693(switch)'
        02/11 Addr (1): IPv4 195.30.0.96
        03/07 PortID '5/7'
        04/08 CAP 0x2e
        05/66 Version:
WS-C5509 Software, Version McpSW: 5.5(13) NmpSW: 5.5(13)
Copyright (c) 1995-2002 by Cisco Systems

        06/0c Platform: 'WS-C5509'
        09/0d VTP Management Domain: 'Space.Net'
        0a/06 Native VLAN ID: 1
        0b/05 Duplex: full
        12/05 unknown field type 12, len 5
        13/05 unknown field type 13, len 5

www.cisco.com doesn't document the recent additions to CDP (TLV tags
0x0a, 0x0b, and 0x12/0x13), but for 0a/0b, implementing the decoder was
easy by looking at the output of "show cdp neigh det" on other devices.

Now these new fields 0x12 and 0x13 don't seem to be decoded in other
Catalyst switches or even-most-recent Ciscos, that is, "show cdp neigh
detail" doesn't display anything that wouldn't be a result of the other
fields.

Does anybody know (and can tell) what these fields mean? Is there an
updated documentation somewhere on CCO?

gert

PS: The prize for a correct answer is a patch to tcpdump/print-cdp.c :-) 

-- 
USENET is *not* the non-clickable part of WWW!
                                                           //www.muc.de/~gert/
Gert Doering - Munich, Germany                             gert@greenie.muc.de
fax: +49-89-35655025                        gert.doering@physik.tu-muenchen.de

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