Take this configuration on a 6500 with 2 WS-X6716-10-GE modules installed.
interface Port-channel1
description Switch02:Po1
switchport
switchport trunk encapsulation dot1q
switchport mode trunk
switchport nonegotiate
!
interface TenGigabitEthernet1/1
description Switch02:Te1/1
switchport
switchport mode trunk
switchport nonegotiate
channel-group 1 mode on
!
interface TenGigabitEthernet2/1
description Switch02:Te2/1
switchport
switchport mode trunk
switchport nonegotiate
channel-group 1 mode on
shutdown
!
Now I do this:
conf t
int Te2/1
no shut
This error message is generated:
%EC-SP-5-CANNOT_BUNDLE2: Te2/1 is not compatible with Te1/1 and will
be suspended (trunk mode of Te2/1 is trunk, Te1/1 is dynamic)
The million dollar question - Why would it see Te1/1 as being in dynamic trunking mode?
