Can someone explaing why do we see duplicate etherchannel forming ?
In the below output Po32A and Po33A
GRVSERVNEWCS8#show etherchannel summary Flags: D - down P - bundled in port-channel I - stand-alone s - suspended H - Hot-standby (LACP only) R - Layer3 S - Layer2 U - in use N - not in use, no aggregation f - failed to allocate aggregator
M - not in use, no aggregation due to minimum links not met m - not in use, port not aggregated due to minimum links not met u - unsuitable for bundling d - default port
w - waiting to be aggregated Number of channel-groups in use: 5 Number of aggregators: 7
These ports are called Aggregator ports Po32A(SU) and are put in a Suspended state
It's because Port-channel noticed difference in configuration and was not able to bundle ports together. Secondary aggregator Po32A will keep the port up but will work as a separate port, like you did not have port-channel at all. What are these ports connected to?
Please see below link for some more info on aggregartor ports
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