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New Member

DSCP bit and NetFlow cache

I have a QoS policy configured in my WAN facing interface which forces the DSCP bit. Since NetFlow is a ingress based, I am not able to get the DSCP bit which is being set on WAN interface. Is there any way I can get the DSCP information of the traffic going out from the WAN interface.

VR

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Blue

Re: DSCP bit and NetFlow cache

NetFlow can be configured to use egress accounting ("router-if# ip flow egress") if you have IOS 12.4 and some newer IOS 12.3 releases.

Caveat:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cg/hnf_c/ch05/nfb_bega.htm

"Egress NetFlow accounting might adversely affect network performance because of the additional accounting-related computation that occurs in the traffic-forwarding path of the router."

New Member

Re: DSCP bit and NetFlow cache

What you mean here is, egress can report about the DSCP information that is forced on the outbound traffic on the WAN interface?

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