what linecard have you installed on the chasssis ?
We had a couple of strange problems with the 8port 10GE linecard: the second one was an error message of the Metropolis ASIC and the first was an access layer switch complaining of not receiving STP BPDUs triggering loop guard.
We opened two SRs and after an IOS upgrade to 12.2(33)SXHa we solved both issues.
We have the 8port 10GE cards as well and are seeing the exact same message you referred to with STP BPDUs not being received on the access switches triggering loopguard messages. I am also thinking this is related to a FWSM failover problem we are seeing (also communicating between switches of the 10GE link on that card). Do you have any additional information on what problems you were having? I have a TAC case open on this issue and would love to be able to reference any information you can give me with our case. What IOS version were you running before loading 12.2(33)SXHa? We are 12.2(33)SXH.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...