02-16-2010 09:09 PM - edited 03-06-2019 09:44 AM
Hi,
I am looking at an issue with a cross stack etherchannel running LACP. Member port g1/0/1 of the bundle is changing state frequently without any known cause.
The two stacks are made of 1x Cisco 3750 12S and 1x Cisco 3750 E 24.
G1/0/1 on the 12S connects to G1/0/1 on the other 12S SFP.
G2/0/1 on the E connects to G 2/0/1 on the other E using copper.
Interface G1/0/1 is flapping. Bundle is active and passing traffic.
Anyone seen this combination?
10-06-2010 02:54 PM
Have you changed the Gi1/0/1 fibre optic cable and/or SFP that connects the two 3750G-12S?
10-06-2010 03:06 PM
I agree with Leo,
You may have a bad fiber patch cable or a bad SFP.
Reza
10-06-2010 05:06 PM
Thanks for the advice.
I had changed the SFP and the Fibre cabling. I eneded up having to move the link to an alternate slot on the 12S.
Might need to get a TAC raised.
Thanks again.
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