From: Church, Chuck (cchurch@xxxxxxxx)
Date: Thu May 30 2002 - 12:43:06 GMT-3
Clarence,
If you've got a CATOS switch, try l2trace command:
WP-4006-1> l2trace ithp4000 200.100.100.249
Mapping IP address to MAC address
ithp4000 -> 00-10-83-06-c7-df
200.100.100.249 -> 00-50-8b-78-95-3a
Starting L2 Trace
2/10 : 200.100.100.50 : 1/1-2
3/33-34 : 200.100.100.51 : 2/11
To explain the output above, 2/10 on the first line is the port on switch
200.100.100.50 that the ithp4000 device is plugged into. The 1/1-2 is the
channel/trunk connecting that switch to the next switch, 200.100.100.51,
ports 3/33-34. Finally the device 200.100.100.249 is connected to port 2/11
of the .51 switch. It's a pretty cool tool. I suspect if relies on CDP to
function.
Chuck Church
Sr. Network Engineer
CCIE #8776, MCNE, MCSE
US Tennis Association
70 W. Red Oak Lane
White Plains, NY 10604
914-696-7199
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Clarence Parker
Sent: Thursday, May 30, 2002 8:48 AM
To: ccielab@groupstudy.com
Subject: Layer 2 trace
=20
Does anyone know of any good applications capable of a layer 2 trace? I
am tweaking spanning-tree in my network and want to be assured of my
path selection. I know CiscoWorks is capable but am looking for a small
app.
Thanks.
=20
=20
=20
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