is possible configuring netflow on interfaces trunk?
thanks in advanced.
really on L2 etherchannel or on 802.1q trunk you cannot configure NetFlow,
but flows that are going throught etherchannel or trunk ar counted via "mls".
MLS works globally, it includes all L2 interfaces. This includes all trunks
and etherchannels. In the netflow export you will see source/destination VLAN
for L2 ports. You will see physical interfaces for L3 ports (i.e Gigabit1/3).
It is not possible to find a physical port for L2 data flow. So you
cannot identify if flow is comming from ehterchannel, you will see that a
flow income from VLAN 3 and going to VLAN 5.
You can configure "ip flow ingress" or "ip route-cache flow" commands on
In other words: For proper configuration use "ip flow ingress" on all L3 ports
(show ip interfaces brief | excl unassigned)
and also configure mls (see the url that I sent you in the last entry).
Sorry for my English. I hope that my comment is comprehensible.