trunking an etherchannel config

Unanswered Question
Aug 17th, 2009
User Badges:

Hi all

when configuring etherchannel for my trunk links, do I just need to config each physical port as a trunk, then just assign them to a channel group? i do not need to do anything on the port channel itself ?

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
scottwilliamson Mon, 08/17/2009 - 01:49
User Badges:

Hi Carl,

Set your etherchannel group as a trunk also, otherwise you get a mismatch and the etherchannel won't work. you can also use the switchport trunk allow command to limit the number of vlans on the trunk.

hope this helps


carl_townshend Mon, 08/17/2009 - 02:50
User Badges:

how come the trunk config does not carry across to the port channel group ?

scottwilliamson Mon, 08/17/2009 - 03:57
User Badges:

Dunno Carl, you'd have to ask the Cisco boffins that one - I do remember reading somewhere that it's supposed work the other way; change the port channel config and the member ports'll change to suite, but I cannot remember if I've actually seen that happening (might be dependant on platform and IOS vers?).



This Discussion