I am having a weird issue with a port-channel interface. I am configuring a trunking interface to link up a switch with a VMWare ESX Server virtual switch. I have set up the trunking on the virtual side as well as on my physical switch. I am using 2 ports to create this channel. The problem is when I set up a continous ping from my Windows system, and monitor I am seeing some interesting results. When I add both ports to the channel, communication stops. When I remove one, communication starts up again through the port not in the channel. When I shutdown the port channel for several mins and open it up again, the pings go on for about a min before timing out. I am not sure whats going on. The channel configs match the physical interface configs. I would assume the trunking is set up correctly since it does work when not in the channel. Any help would be appreciated.