I was doing some trunking - typical command such as switchport mode trunk then typed encapsulation dot1q and it was not available. But the dot1q-tunnel was available.
Is dot1q-tunnel one in the same for encapsulation or is this a another ios upgrade for me? I just upgraded this switch to ios version 12.2(46)SG
With the particular module you have it only supports dot1q trunks. the "switchport trunk encapsulation dot1q" command is only valid is ISL trunking is also supported on the module. The "switchport mode trunk" command will be sufficient to form a dot1q trunk. No need to specify the form of trunk.