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Hi,   One slight complication is that we do have a couple of MSM 18/4 modules in the chassis too, which I believe are classed as gen2 - however none of the ISL's we're planning for the port-channel would come from this card.  Code level 4.2(3) at present.  Any help in answering, much appreciated?  Cheers
MDS9500 gen3 module - max. interfaces in port-channel?