It is, but my experience is that vlan-wide information is stored on the RSM (if
you have those). So, if you want to see all of vlan 1 you get that from the
RSM. If you want to know the amount of traffic on vlan 1 for your particular
switch, you are going to have to build a custom mrtg cfg file that includes an
aggregate definition for all the ports you know are on vlan 1 on the switch.
Obviously this is not dynamic, but it is all I have been able to come up with.
Whenever I have tried monitoring vlan information on the switch itself, the
interface gets commented out by cfgmaker because the switch reports an
interface speed of 0, and no traffic information is stored in if{In|Out}Octets.
The majority of our traffic is routed via RSMs still, so I have not had a huge
problem monitoring total vlan traffic.
We do have a newer 6513 device with a Sup2/MSFC2 blade in it. We are running in
hybrid mode and doing layer-3 switching on the switch side; the MSFC2 seems to
only come into the picture with multicast and logged access-list traffic -
everything else is handled via the SUP2, and thus we are just out of luck with
respect to vlan monitoring on that device.
-Will
-----Original Message-----
From: David Roze [mailto:[EMAIL PROTECTED]
Sent: Friday, March 14, 2003 9:20 AM
To: [EMAIL PROTECTED]
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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