bridge LT2v3 PWE to MPLS PWE

[milko.ilari]

Hello all,

I need to transport Ethernet tagged traffic from destination A to destination B but between these two ends I have a not-aware ethernet VLAN network and an MPLS network.

I thought to create an L2TPv3 PWE in the first part of the path and an MPLS PW in the sencond but I don't know how to join together maintaining VLAN tagging. With a bridge domain on ME 3600X I will lost first tag.

Is there another way or a different solution?

Thanks in advance.

Milko

[Vinit Jain]

Hello Milko

I am not sure if I understand your topology completely but based on my partial understanding, i think EVC with Q-in-Q might help you. You can configure EVC and have the service interface configured with Q-in-Q. Does your router support EVC?

Vinit

[milko.ilari]

Hello Vinit,

thanks for your answer. I attached a schede that might could help.

Ethernet network is managed from Incumbent in italy and it does not allow any kind of tagging; only untagged traffic from customer. MPLS network is my network so I can do everything I want.

So to allow customer to have a "full trasparent L2 service" I thought to encapsulate its traffic with L2TPv3 up to my MPLS POP and then transport it. 

The point is I don't know how to join the two pseudo wire  maintaining all VLAN tagging from customer.

Router in the middle is ME3600X but I can use also an ASR router.

I hope you understand now.

Thanks again.

Milko

[Vinit Jain]

Hi Milko

I dont really think there is a way to have a patch between L2TPv3 and xconnect over MPLS.

If you can have another ASR router or ME switch where you terminate the L2TPv3 on that switch and the device next to it is running something like EoMPLS. The reason for suggesting this method is, this way you can have your AC up else, i dont really think its gonna be up.

Or Alternatively, you can run L2TPv3 End to End since you will have IP reachability end to end.

Hope this helps.

Vinit