Hi all, I just ran into a strange problem on a 3750ME. I've got two gig ports in an active LACP port-channel looking like this:
interface GigabitEthernet1/0/1 switchport trunk encapsulation dot1q switchport trunk allowed vlan 101,102,400,664,1000-2999 switchport mode trunk speed 1000 duplex full channel-group 1 mode active end interface GigabitEthernet1/0/2 switchport trunk encapsulation dot1q switchport trunk allowed vlan 101,102,400,664,1000-2999 switchport mode trunk speed 1000 duplex full channel-group 1 mode active end interface Port-channel1 switchport trunk encapsulation dot1q switchport trunk allowed vlan 101,102,400,664,1000-2999 switchport mode trunk end When I added vlan 400 to the trunk allowed vlan list, one of the underlying gig ports flapped, which caused the port-channel to flap as well. Jan 7 12:09:27.647 PST: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/1, changed state to down Jan 7 12:09:27.656 PST: %LINEPROTO-5-UPDOWN: Line protocol on Interface Port-channel1, changed state to down Jan 7 12:09:28.654 PST: %LINK-3-UPDOWN: Interface Port-channel1, changed state to down Jan 7 12:09:31.464 PST: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/1, changed state to up Jan 7 12:09:32.454 PST: %LINK-3-UPDOWN: Interface Port-channel1, changed state to up Jan 7 12:09:33.461 PST: %LINEPROTO-5-UPDOWN: Line protocol on Interface Port-channel1, changed state to up Jan 7 12:09:48.745 PST: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan400, changed state to up This definitely seems like something that should not happen. I'm running Cisco IOS Software, C3750ME Software (C3750ME-I5K91-M), Version 12.2(46)SE, RELEASE SOFTWARE (fc2). Any thoughts on what I should be checking? --Jared _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
