Cisco ASR Bridge Domain

[mspdog22]

Hello 

I am working with cisco IOS XR and ASR 9K router. We are trying to set up a new client with Layer 2 transport with the below config. We are using ASR 9K as our main router in the data center and cisco 4500x units still in our sub site locations. We are working on upgrading our 4500x units but this still has not happened yet. On the 4500x side we are handing off a port from our switch in access vlan 600 and then tunneling them back to our core and then off our core back out to another 4500x that has the same config on it. the customer seems not to be able to pass all vlans across our network. Please see below config for both 4500x units and our core ASR.

ASR CONFIG

interface TenGigE0/0/0/30.600 l2transport
description CUST-A-TRANSPORT
encapsulation dot1q 600

interface TenGigE0/0/0/22.600 l2transport
description CUST-A-TRANSPORT
encapsulation dot1q 600

l2vpn
bridge group CUST-1
bridge-domain CUST-A
interface TenGigE0/0/0/22.600
!
interface TenGigE0/0/0/30.600

4500-X SITE ONE

interface TenGigabitEthernet1/1
description CUST-A-TRANSPORT
switchport access vlan 600
switchport mode dot1q-tunnel
l2protocol-tunnel cdp
l2protocol-tunnel lldp
l2protocol-tunnel stp

4500-X SITE TWO

interface TenGigabitEthernet1/1
description CUST-A-TRANSPORT
switchport access vlan 600
switchport mode dot1q-tunnel
l2protocol-tunnel cdp
l2protocol-tunnel lldp
l2protocol-tunnel stp

[tkarnani]

under your l2transport interfaces please add

rewrite ingress tag pop 1 symmetric

then test again, this should push the vlan tag out

[mspdog22]

So if i am using vlan 100 and the customer is using vlan 100 will that be an overlap on my network with this setup?

Should i move over to a higher vlan number?

[MHM Cisco World]

As role you need to use rewrite with any bridge if the ASR recieve vlan tag frame.

MHM

[nkarpysh]

I think you also need to switch port to trunk as on ASR9k side you expect encapsulated packets. Access port does not tag the packets thus you my not hit thr proper sub-interface on the ASR9k side.

As you dont have an IRB you may not even need to stip the VLAN - but thats upon your choice.

HTH

Niko

[mspdog22]

Our main uplink port to our asr 9k is a trunk port.

My main question is if i am using vlan 100 and the customer is using vlan 100 can this cause issues ?

[MHM Cisco World]

Please I am confuse here 

Your original post show 4500 use access port and you then mention you use trunk can you elaborate 

Thanks alot 

MHM