multi-vrf ce and ospf domain-tag

[slyb_cisco]

I have configured an mpls vpn between two customer's sites. In every site I have installed two cat35xx with a multi-vrf ce.

I have a multi access ospf neighbour ship to the customer equipments and a bgp session to mpls backbone.

The ospf routes are redistributed on bpg and vice versa.

On ospf process can I use domain-tag to prevent routing loop?

How can i do to verify the domain-tag's functionality in this architecture?

I've tried to configure domain-tag but the ospf database contains all tagged routes but how can i be confident that these routes'll not be announce back to mpls backbone through bgp session between catalyst 35xx and Pe?

Is the the domain-tag functionality supported with vrf-lite?

Thanks in advance

[mheusinger]

Hi,

you can check the OSPF database of your PE and its routing table. The respective routes should be visible in the database, but not in the routing table.

Regards, Martin

[slyb_cisco]

Hi Martin,

I've ospf process running only on catalyst 3550 with vrf-lite, the ospf routes are announced to the PE through bgp session configured between the catalyst 3550 and the PE.

Does the vrf-lite support the same functionalities of native PE-CE ospf in the mpls vpn, as domain-tag?

Thanks in advance

B.