Netflow Interface L3 Capture

Unanswered Question
Oct 1st, 2010
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Hello Everyone,



I trying to configure netflow feature in my cisco 4507, using ntop for capture the packets.


But, the switch sends all traffic passed, i need so four ports to capture, and not all traffic.


Its possible configuring so four ports to send the netflow traffic? the ports are L3 mode.


4507 Conf :


ip route-cache flow
ip flow ingress
ip flow-export version 5
ip flow-export destination x.x.x.x  9996


Tks a lot.


Rafael Mendes

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Giuseppe Larosa Sat, 10/02/2010 - 05:12
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Hello Rafael,


you should have provided additional information:


a show module to see what type of supervisor you have


a show ver | inc image


to see what IOS image is running


However, the answer is negative:


>> Enabling NetFlow on a per interface basis is not supported on a Catalyst 4500 switch.


see

http://www.cisco.com/en/US/docs/switches/lan/catalyst4500/12.2/52sg/configuration/guide/nfswitch.html#wp1022037


even in 12.2(54)SG


http://www.cisco.com/en/US/docs/switches/lan/catalyst4500/12.2/54sg/configuration/guide/nfswitch.html#wp1014923


to be noted I see a new IOS XE 3.1.0 SG for C4500 but this is really new



you need to implement a filter on the netflow collector using the SNMP ifindex of the desired interfaces


you should be able to see SNMP ifindex by using


show snmp mib ifmib ifindex




Hope to help

Giuseppe

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