[c-nsp] Configuring a cisco switch trunk port to allow dot1q and, dot1ad frames

Paul paul at gtcomm.net
Tue Mar 13 05:05:19 EDT 2012


It is my understanding that you put switchport access vlan XX
on the dot1q-tunnel port and this encapsulates all traffic coming in 
there to that specified
vlan.  (So it's basically an access port to the customer, which instead 
of being a normal
access port it accepts ALL tagged frames (encaps them in vlan XX) and 
shoves them out the other vlan XX ports
you have with dot1q-tunnel after unencap from vlan XX.

The port does not operate in trunk mode at all and thus will ignore any 
trunk based commands.
Tunnel ports also don't work on certain modules. Which module are you using?

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