Monday, March 2, 2020

LACP Path / Port selection

I have (2) Nexus 93180YC FX switches setup in VPC. I’m connecting the two Nexus core switches to a catalyst 2960X.

I’m wondering if anyone knows how the Catalyst (or any switch for that matter) selects which port in a port-channel for traffic to exit on.

Based off some wiresharking it looks like the traffic is leaving the catalyst on the lower switchport number consistently.

Does LACP have a method for selecting a port to exit on?



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