Quick one on Link aggregation

Unanswered Question
Jan 24th, 2010

Hi,

Ive got a situation where I have a router with a gigabit ethernet interface and a fast ethernet interface.

I want this router to be a router-on-a-stick so there is a trunk coming from a switch to the gig interface, the rest of my network has good redundancy and this link is kind of a SINGLE POINT OF FAILURE so I was wondering if I can aggregate FA and the GI int on a 2800 using LACP or Etherchannel (or anyhow) its not directly for the extra bandwidth its more for fault tolerence.

Thank you in advance everyone

Dan

I have this problem too.
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Ganesh Hariharan Sun, 01/24/2010 - 05:31

Hi,

Ive got a situation where I have a router with a gigabit ethernet interface and a fast ethernet interface.

I want this router to be a router-on-a-stick so there is a trunk coming from a switch to the gig interface, the rest of my network has good redundancy and this link is kind of a SINGLE POINT OF FAILURE so I was wondering if I can aggregate FA and the GI int on a 2800 using LACP or Etherchannel (or anyhow) its not directly for the extra bandwidth its more for fault tolerence.

Thank you in advance everyone

Dan

Hi Dan,

Check out the below link for your requirement and with detail configuration commands hope it help out your query !!

http://www.ciscosystems.com/en/US/docs/switches/lan/catalyst5000/hybrid/routing.html#wp41701

If helpful do rate the valauble post.

Regards

Ganesh.H

glen.grant Sun, 01/24/2010 - 05:36

  No you cannot etherchannel unequal speed links into a etherchannel.  If you want to do this  you would have to drop the gig link to 100 meg and try it .  It's not something I have tried on a router though .

Ganesh Hariharan Sun, 01/24/2010 - 05:51
  No you cannot etherchannel unequal speed links into a etherchannel. 
If you want to do this  you would have to drop the gig link to 100 meg
and try it .  It's not something I have tried on a router though .

Thanks Glen for clarification for unequal speed for etherchannel configuration.

Regards

Ganesh.H

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