I've upgraded two 4500 chassis with 9400 so far. Replaced with 9407 with L3 PC uplink config on other end 6880 untouched, but when I do 'channel-group x mode active' on the 9400 both sides claim lacp isn't configured on the other side. Switch originally had 16.6.2, upgrading to 16.6.6 didn't help the issue. Finally went to 'channel-group x mode on' to get the port-channel to come up. Cisco says it should work and are going to lab it up and to try to find why it doesn't. Anyone seen this?
Solved! Go to Solution.
Ah, I missed that one. By making the state active manually, I'm not sure it wouldn't go into suspend again in case of a power outage or reboot. I'll just try the next upgrade using the fixed 16.6.4 to be safe.