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Netflow 6513 12.2(18)SXF7 & PFC3B - unrouted layer2 & router layer3 vlans -

When I open the netflow tool I see unrouted vlans that don't have netflow flowing, but the routed vlans do have netflow flowing. The problem is one of my vlans that is unrouted layer2 has more data then the routed layer3 vlan, both are the same vlan one is just layer2 and the other is layer3.

I have issued these commands;

ip flow-export dest X.X.X.X port

ip flow ingress layer2-switched vlan X

ip flow ingress layer2 vlan X

mls flow ip interface-full

mls netflow

mls flow ip full

interface vlanX
no ip redirects
ip flow ingress
ip multicast netflow egress
ip route-cache flow

Thanks to all!

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Accepted answers

All comments

Donald_Francis

This is the second time I have seen this question and I while I do not know the answer for sure you would have to think that packets that are ONLY L2 switched that never cross a L3 interface would not have netflows built for it.

But I am sick of wondering I will find out today for sure and post back today if no one else does.

kweise

I've seen this question before too. I think it has to do with IOS version and the version of PFC card you have in the 6500. According to Cisco, if you have a PFC3A card, you can only collect NetFlow stats on routed traffic. You need a PFC3B or PFC3BXL to get layer 2 data. You also need to be running IOS 12.2(18)SXE or later code.

See the NetFlow Overview section in this document:

www.cisco.com/.../netflow.html

Hope this helps!