I am tearing my hair out with an issue, and I hope someone can point something out to me that I am missing.
I am setting up 2-port LACP sets on a Cisco 2960G-24TS-L, which then need to be 802.1q trunk ports. I have set it up as follows: interface Port-channel1 switchport mode trunk ! interface Port-channel2 switchport mode trunk ! interface Port-channel3 switchport mode trunk ! interface Port-channel4 switchport mode trunk ! interface GigabitEthernet0/1 channel-protocol lacp channel-group 1 mode active ! interface GigabitEthernet0/2 channel-protocol lacp channel-group 1 mode active ! interface GigabitEthernet0/3 channel-protocol lacp channel-group 2 mode active ! interface GigabitEthernet0/4 channel-protocol lacp channel-group 2 mode active ! interface GigabitEthernet0/5 channel-protocol lacp channel-group 3 mode active ! interface GigabitEthernet0/6 channel-protocol lacp channel-group 3 mode active ! interface GigabitEthernet0/7 switchport mode trunk channel-protocol lacp channel-group 4 mode active ! interface GigabitEthernet0/8 switchport mode trunk channel-protocol lacp channel-group 4 mode active The problem is that after some period of time (sometimes minutes, sometimes hours), port-channel1 loses the "switchport mode trunk" It just disappears from the config. If I try to put it back, it adds "switchport mode trunk" to the member ports (Gi0/1, Gi0/2) as well, which does not work. I have to tear it all out and start again. It will then work for a while again. port-channel2 and port-channel3 are not in use yet, but port-channel4 is, and works just fine. It is running IOS 15.0(1)SE. It was running 12.2 before, and it was doing the same thing, so I upgraded it to the latest available. What could be the issue? thanks, -Randy
