Hi,
Q-in-Q is supported on 1G and 10 G interfaces for that platform. Problem is when you configure sub interface, if you are using bigger number after dot, q-in-q for some reason is not available:
router(config)#interface tenGigabitEthernet 0/1/1.10
router(config-subif)#encapsulation dot1Q 1700 ?
native Make this as native vlan
second-dot1q Configure this subinterface as a 1Q-in-1Q subinterface
<cr> <cr>
router(config)#interface tenGigabitEthernet 0/1/1.1700
router(config-subif)#encapsulation dot1Q 1700 ?
native Make this as native vlan
<cr> <cr>
I have dna-advantage license.
Regards,
Z