Hi,
I have been scratching my head trying to get out new pair of c9500s configured.
I have set up stackwise virtual and have successfully connected both switches. Everything looks fine and config is correct.
I then connected a port on each switch with a direct fibre to use for Dual Active Detection and applied the "stackwise-virtual dual-active-detection" command on each port and rebooted the pair of switches.
When the switches came back up, the DaD ports were no longer lit up and the show stackwise-virtual dual-active-detection command showed both ports as down. I can confirm the SFP modules and the fibre are fine - it seems to to be the action of adding the DaD commands that causes them to shut down.
Any ideas what I am doing wrong??
