[mrtg] Re: Monitoring VLANs on CISCO

[Lindahl, Carl]

What exactly do you mean by monitor traffic on VLANs on a switch? Are you
talking about how much traffic is being passed from one point on a switch to
another and just happens to be on a perticular vlan, or are you talking
about how much traffic is hitting the management interface of the switch? 

You say that you have managed to do it for the whole interface, i.e.
interface VLAN1? You can put your management interface on any VLAN you want
with the current versions of Cisco code (older versions didn't always
support this) and see how much traffic the management interface is getting
to it. You can't really monitor traffic on a VLAN level with a 2950. You
would need an intelligent RMON Probe on a trunk going to that switch, or
monitor a RSM/MSFC interface like Will Saxon said in his message. 

The 2950 series switch is really an access layer switch, and does not have
nearly the features of the 6500s w/ a MSFC to monitor traffic patters and
flows.


Carl

-----Original Message-----
From: David Roze [mailto:droze at digiweb.ie]
Sent: Friday, March 14, 2003 9:20 AM
To: mrtg at list.ee.ethz.ch
Subject: [mrtg] Monitoring VLANs on CISCO


Hi,

Has anybody ever tried to monitor trafic on VLANs on a cisco switch?
I manage to do it for the whole interface but I'd like to do it for each 
different port.
I can't find actually the right OID for these.
My switch is a Catalyst 2950.

Does anybody know if it's possible?

Thanks

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