I'm trying to understand what the STAND-ALONE (I) flag means when issuing the "show etherchannel summary" command.
I saw this on a 3750 switch on an etherchannel that was created towards a server, also my client said that sometimes link performance was very poor while some others it was perfect.
I tried to find and explanation to this flag unsuccessfully, so I guess you can have the answers!!
I think you should try reconfiguring the Etherchannel because normal output of show etherchannel summary
should be SU instead of Stand-alone.
S = Layer2 (Switch level)
U = In use ( all the port in the Etherchannel is in use.)
Stand-alone means some port are not in use.