Where to apply PBR, L3 EtherChannel or on Physical Ports of the etherchannel

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Sep 19th, 2010
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the issue is supposedly so simple, if I have two layer-3 capable switches to try what I am about to do in a lab enviroment before I apply it at the customer site. I am about to apply IP Policy Route-map in a Core switch. The issue is, the interface I am applying the policy to, is a Layer-3 EtherChannel composed of 2 10-G each port.

My question is, whether I should apply the policy to the Etherchannel or to the individual ports participating in the etherchannel.


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Lei Tian Sun, 09/19/2010 - 05:07
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Hi Mike,

L3 port, you shouldn't see the option to config PBR on a L2 port.


Lei Tian

Jon Marshall Sun, 09/19/2010 - 07:44
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But if it's a L3 etherchannel wouldn't the individual ports be L3 as well ie. "no switchport" ?


Never done it but i would think you only need to apply it on the L3 port-channel interface.


Lei Tian Sun, 09/19/2010 - 13:14
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Yes, Jon you are right. I was thinking L2 port-channel and PBR on SVI.


What platform are you using? In general, you should apply PBR on the port-channel interface, not physical interface.


Lei Tian

Nagaraja Thanthry Sun, 09/19/2010 - 08:01
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Is the port-channel interface be the up-link port for your traffic? The PBR is effective when the interface you are applying to is accepting the traffic and is making routing decision for you.



ccie16351 Sun, 09/19/2010 - 11:06
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Thank you all.


1.- The physical ports are routing ports (no switchport access).

2.- The IP address of the port-channel interface is the one participating in the routing process.



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