[c-nsp] Cisco ASR 9k transporting QinQ traffic

[James Bensley]

Just a quick off-the-top-of-my-head response...

Have you tried using (on the 9K):

interface GigabitEthernet0/0/0/17.427 l2transport
 encapsulation dot1q 427 second-dot1q ABC
 ! and optionally
 rewrite ingress tag pop [1|2] symmetrical

Or if it is a range of C-VLANs "encapsulation dot1q 427 second-dot1q
10-50" ? This will assume both VLANs have Ethertype 8100.

If you want to support 9100 or 9200 as the outter tag Ethertype then
you need to set it on the physical interface:

interface GigabitEthernet0/0/0/17
dot1q tunneling ethertype [0x9100|0x9200]

interface GigabitEthernet0/0/0/17.427 l2transport
 encapsulation dot1q 427 second-dot1q ABC


If you want Ethertype 88A8 on the outer tag you can use the following
without anything on the main physical interface:

interface GigabitEthernet0/0/0/17.427 l2transport
encapsulation dot1ad 427second dot1q XXX

Cheers,
James.