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Port-channel down but duplicate interface created with "A" up

TIMOTHY SCHWIMER
Level 1
Level 1

‎02-08-2012 08:48 AM - edited ‎03-07-2019 04:48 AM

I have created 5 new 2 Gig port channels on a 6513 WS-X6516A-GBIC blade

connecting to 5 4510R+E switches. 3 of the 5 Port-channels show up/up. 2 show down/down. However, for the 2 showing down, a duplicate Po interface was created with an "A" appended to the name that shows up/up.

eg:

Port-channel26             unassigned      YES unset  down                  down      

Port-channel26A            unassigned      YES unset  up                    up

Can someone explain what this is any why it is occurring?

Each of the 4510s has a second 2Gig PO to another 6513 with an identical config and all of those come up fine.

Thanks for any feedback!

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