Thanks for the reply.

We found out what was causing the trouble, but:

Are you talking about a VLAN SVI for the layer 3 port?

Also, what if this were a Multilink bundle?

I would be able to see traffic staticstics for per user stats?

And if I turn this on, what sort of impact will this have on cpu or memory on that device?

Hi,

You can turn on the ip accounting under any interface( physical, vlan svi etc) which has an ip address.

Yes you can very well turn that feature under a multilink bundle interface. You would get the traffic statistics and from that you can find out, which ip is pumping more traffic.

IP accounting will result in additional CPU utilisation. However it shouldn't be causing any huge performance impact, unless you are already running at very high cpu utilisation.

As this is only for diagnostic purpose, once your troubleshooting is over, you would have to turn this feature off.

If you want to have such statistics collected and stored for future reference, you should look at the netflow feature, which provides much more details on traffic statistics. Ofcourse for this, you need a netflow collector software to interpret the netflow data exported from the switch and present it in a graph format and to archive the statistics for future reference.

Hope this helps.

-VJ

Very useful.

Thank you very much