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L3 Etherchannel

Posted on 2014-07-26
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Last Modified: 2014-07-27
In a etherchannel all configurations which are done on interface port-channel XX will be passed down to my physically port members automatically is this correct.
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Question by:ciscosupp
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by:Don Johnston
ID: 40221945
Correct. For all commands that are not specific to port channel or physical interfaces.  For example, "speed" is not one of those commands that get inherited.

But defining access vs. trunk, or which VLANs are allowed on at trunk, those do get inherited by the physical interface.
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by:ciscosupp
ID: 40221957
ok but what I don't understand is I added the command vrf member TEST to my ether channel but when I do show run inter the command is not on my physical interferences which is part of the port channel.



inter face port-channel 10
no switchport
vrf member TEST
ip address 192.168.0.1 255.255.255.0

interface eth1/10
no switchport
channel-group 10 mode active

interface eth1/11
no switchport
channel-group 10 mode active

I can add the command vrf member TEST to the physically interface (etj1/10 -11)without getting any error but my question is why is the command not passed down automatically from etherchannel 10
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by:Don Johnston
ID: 40222057
Are you doing this on a Nexus platform?
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by:ciscosupp
ID: 40222241
yes correct  nexus 5548.
I want a L3 port-channel that is part of a vrf.
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by:Don Johnston
ID: 40222394
I've setup L3 port channels on 7Ks that were not part of the default VRF.  I just don't recall if the command shows on the physical interface.

Unfortunately, I don't have access to that switch right now so I can't check it.

Is it not working or is it working and you're just curious why it's not showing on the physical interfaces?
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by:ciscosupp
ID: 40222454
it working just curious why not showing .
I cant harm when adding the command also to physical interface is this correct.
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Don Johnston earned 500 total points
ID: 40222491
it working just curious why not showing
Can't answer that one.  To be honest, it doesn't surprise me. Nexus switches have quite a few idiosyncrasies like that.
I cant harm when adding the command also to physical interface is this correct.
I would not make that assumption. :-0
If you're going to do that, make sure you do it during a maintenance window.
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