Configuring VPLS over TE Tunnels Using QinQ Stacking Sub-Interface

Felipe Sevillano, Transport & Data Planning Department, TELECOM PERSONAL PARAGUAY

In my company we have deployed a DWDM National Backbone to carry the services from mobile and fixed network services for the whole country; the services access the DWDM network through the IPRAN device (CX600/ATN950/ATN910I) that hangs from the LEM24 on each DWDM equipment.

For mobile services it was very easy to configure them with a strong reliability using the MPLS TE TUNNELS and L3VPN services, but I face a problem for Internet services that depends of a pure L2 network, so start to read the manuals to find a good solution and decide to deploy VPLS in Martini Mode over TE Tunnels. This avoid loops in the network and also provide all the reliability given by MPLS TE TUNNELS.

Then I face a new problem, I notice that there were too many services to start one VPLS for each customer, so start to read the manual again and I find the QinQ Stacking bind to a VPLS, so I made a mix of everything and the services are running smoothly until today. With this solution I can carry in one unique VPLS 100 C-VLANs using only one S-VLAN for each site.

Below an example of how to configure this kind of services:

Configuring the CE device:

vsi VSI-ATN_A static

 pwsignal ldp

  vsi-id 10

  peer [ip of peer destination] tnl-policy ipran #Here you bind the VPLS to a TE Tunnel

 

interface GigabitEthernet0/2/26

 undo shutdown

 mode user-termination  #This enable the interface for bind the sub-if to a vsi and permit to do the stacking

 

interface GigabitEthernet0/2/26.2007

 qinq stacking vid 300 to 400 #Here starts the QinQ stacking

 l2 binding vsi VSI-ATN_A #Here we bind the L2 service to a VPLS

Configuring the PE device:

vsi VSI-ATN_A static

 pwsignal ldp

  vsi-id 10

  peer [ip of peer destination] tnl-policy ipran

 

interface Eth-Trunk1

 undo shutdown

 mode user-termination

 

interface Eth-Trunk1.2007

 vlan-type dot1q 2007 #Only the S-VLAN pass to the provisioning router where the QinQ is finished

 l2 binding vsi VSI-ATN_A

Before implement this configurations you need to configure and enable all the MPLS, OSPF, etc.  protocols for TE Tunnels and also for L2VPN services. You can find the configurations in HedEx manual of ATNs and Also CXs.

Find attached the topology of the example.

Hope this can be useful for someone!

very good information. thanks for sharing..

so do I. :)