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Community Member

Netflow on trunk interface

I have Netflow configured on a Cat6513 running Hybrid mode.

Please can someone confirm whether Netflow data export works on trunk interfaces?

Many Thanks.

5 REPLIES

Re: Netflow on trunk interface

Community Member

Re: Netflow on trunk interface

Thanks for the reply.

What I didn't mention is that this is on a SUP2/MSFC2.

The information in the above link is for s SUP32.

Cheers.

Hall of Fame Super Silver

Re: Netflow on trunk interface

Hello James,

see

You can set the bridged-flow statistics reporting per VLAN. The bridged flows are exported through NDE when you enable the bridged-flow statistics.

The bridged-flow statistics are not supported on Supervisor Engine 720 or Supervisor Engine 32.

this is supported on sup2/MSFC2

this can be done in hybrid mode:

http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/catos/8.x/configuration/guide/nde.html

in native mode 12.1E

NDE does not support bridged traffic or Internetwork Packet Exchange (IPX) traffic.

•NDE does not support IP multicast traffic. You can display NetFlow statistics for IP multicast traffic with the show mls ip multicast command.

see

http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.1E/native/configuration/guide/nde.html

So only if using Hybrid Mode (CatOS on supervisor and IOS on MSFC) you can get L2 stats exported with netflow but on a per L2 Vlan basis.

Hope to help

Giuseppe

Community Member

Re: Netflow on trunk interface

Thanks giuslar

Slightly disappointed, but the question has been answered.

Hall of Fame Super Silver

Re: Netflow on trunk interface

Hello James,

it is not the same thing I agree, you can try from the knowledge of the L2 Vlans permitted and in STP forwarding state to guess the traffic on the trunk port. An help can be given by trunk interface counters.

Hope to help

Giuseppe

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