Difference in L2 interface config IOS-XR?

[Andreas Martensson]

Can anyone please tell me the difference in the ASR9k config below (if any)?

!

interface GigabitEthernet0/0/0/4.21 l2transport

encapsulation dot1q 21

rewrite ingress tag push dot1ad G symmetric

!

!

interface GigabitEthernet0/0/0/4.21

l2transport

encapsulation dot1q 21

rewrite ingress tag push dot1ad G symmetric

!

[mdebraba · Accepted solution]

CLI will only accept #1 as this is a subinterface (VLAN mode PW), #2 is for physical interfaces (Ethernet mode PW).

[Johnny.Lou]

Yes is right , CLI will only accept #1