On Sat, Jul 10, 2010 at 3:00 AM, Church, Charles <[email protected]> wrote: > Anyone, > > Ran into a weird issue today with a re-build of a VSS pair. A botched > IOS upgrade forced me to rebuild the pair. Was going ok, but I'm having > trouble getting the VSL link up between the two. Switch 2 had the port > channel for the VSL link up/up, but on switch 1, it stays up/down. Adding a > second 10 gig link to the port channel on each side resulted in both up/up on > switch 2, and both up/down on switch 1. It was working a month ago in a lab, > the lab guys upgrading to SXI4 killed the config. I'm starting from scratch. > I ran out of time today, didn't get a chance to see if the ints would come > up if the 'switch virtual link 1' command wasn't on there, or check the logs. > Using 2 ints should have ruled out bad X2 modules. Just wondering if anyone > has seem something similar with VSS. > > Thanks, > > Chuck >
Are you negotiating the channel (PAGP/LACP) or is it configured to channel mode "ON"? IIRC Cisco recommends "ON" for the VSL. The behaviour that you descibe looks like one interface is configured to mode ON and the other end tries to negotiate the portchannel. hth, Reinhold _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
