I wanna configure LACP etherchannel between 4500X and 6807 Catalyst switches. But it does not work. The etherchannel is L2 and has 4 10G ports. BTW mode on works successfuly. But it's not desired. both switches are VSS pair. I upgraded both switches to Cisco suggested IOS-XE version but the problem didn't solved.
I tried all order of configuraion:
First create port-channel and then add channel-group under physical
And vice versa: Add channel-group command under physical interface and then configuring the port-channel
In both cases the 'sh etherc su' command show me suspended state.