This question HAS to have been asked and answered a thousand times by now, but I've tried for the last half hour to find that info and can't
For years now I've just accepted that I can't get correct traffic counts on Vlan interfaces on C3750 switches by snmp polling with MRTG.
Has anyone out there either figured out how to do this or tracked down the reason why it's not possible? I read one post that said the C3750 didn't support this. But then I started thinking. If it didn't support it then why is there an OID for it I can successfully poll? I just get wrong information, not no information. The count that it does give me seems to amount to the behavior of some kind of minimum traffic flow or keep alive activity, and the pattern doesn't seem to be affected much or at all by how much or little traffic is being carried by the Vlan.
Anyone out there that's already pursued an explanation/resolution to this issue?