Cisco catalyst monitoring is done per VLAN. If you switch is all the same
VLAN, then monitoring the 1 port will do just fine.
If not, you will only be able to monitor 1 port per VLAN. Either
alternating what you are monitoring, or configure multiple ports to monitor
different VLANs at the same time.
-----Original Message-----
From: Noonan, Wesley
To: 'Michael Nelson'; Jeremy Melanson
Cc: [EMAIL PROTECTED]
Sent: 2/7/01 11:20 AM
Subject: RE: Forwarding all traffic to a port on a Catalyst Switch...
Michael said:
conf t
int fa0/x
port monitor fa0/y
Where fa0/x is the monitoring port, and fa0/y is the port to be
monitored.
**********************************************
This will only monitor a single port though, correct? I think the
question
was to monitor any traffic passed through the switch, and to my
knowledge
you can't unless you have something that can monitor the switch fabric
directly (I think there may be a handful of vendors who make RMON probes
that can do this, but last I checked they were incredibly expensive -
around
a 100G per probe). Short of that, the closest one could do is monitor
the
"uplink" port of the switch. That will show you anything coming in and
out
of the switch, but of course wouldn't show you any port to port traffic
"internal" to the switch.
I could of course be wrong here. Wouldn't be the first, won't be the
last :)
Wes
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