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?
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.
I realized that the fixed version is the latest (16.6.3 was the latest when I had this issue) so I just upgraded a 9400 and turned lacp back on. I can now verify it works great. Thanks again.
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