ASR920 : EVC's and Untagged/Access ports?

[Andrew Battersby]

Can someone sanity check the below if possible. I simply want several interfaces on an ASR920 to be part of the same VLAN. The ports however are connecting to host devices so need to be untagged ports:

ethernet evc VLAN101
!
interface GigabitEthernet0/0/2
 no ip address
 service instance 1 ethernet VLAN101
  encapsulation untagged
  bridge-domain 101
 !
!
interface GigabitEthernet0/0/3
 no ip address
 service instance 1 ethernet VLAN101
  encapsulation untagged
  bridge-domain 101
 !
interface BDI101
 ip address 10.0.0.254 255.255.255.0

It works fine but I don't know if it's the correct method of doing this using EVC's? Should I instead have 'encapsulation default'? Or is there another method I shoudl be using instead?

Thanks

[Shawn Guertin]

I removed my comment (sorry I mixed the question with another)

[Andrew Battersby]

This is on an ASR920 so it's not done the same. 'Switchport' isn't even an option on the ports as the ASR920 is a router.

You have to use EVC's. I just need to clarify the correct method of using EVC's for untagged ports.

[Andrew Judson]

Hi

this config looks fine to me, but

have you attempted STP (Spanning tree) integration?

ASR920 only supports MST, backwards compatible with Rapid-PVST+

This is somthing I am struggling with (CDP seems to work) between the ASR920 and ME3600 I am running but not STP, any pointers?