[c-nsp] Running OSPF on PE-to-CE

[ar]

Can somebody tell me why this route is being prefered?

I have 2 customer edge router. one on each site. The are linked together running ospf for intra-area routes. Multihomed to the MPLS VPN service provider using OSPF also as PE-to-CE  routing protocol. Routes are redistributed so they are both E2 routes.

Here's the outpu from one of my CE. I am trying to check show ip route the loopback address of CE2 from CE1.


Here's the route of CE-2's loopback via the MPLS/VPN


CE1#sho ip route 10.30.30.30
Routing entry for 10.30.30.30/32
  Known via "ospf 10", distance 110, metric 1
  Tag Complete, Path Length == 1, AS 10, , type extern 2, forward metric 1
  Last update from 172.16.2.1 on FastEthernet0/0, 00:01:47 ago
  Routing Descriptor Blocks:
  * 172.16.2.1, from 10.2.2.2, 00:01:47 ago, via FastEthernet0/0
      Route metric is 1, traffic share count is 1
      Route tag 3489660938


Here's the CE-2's loopback via the Intra-area link. (elected as best path always)

CE1#sho ip route 10.30.30.30
Routing entry for 10.30.30.30/32
  Known via "ospf 10", distance 110, metric 20, type extern 2, forward metric 1000
  Last update from 172.16.3.1 on FastEthernet1/0, 00:00:08 ago
  Routing Descriptor Blocks:
  * 172.16.3.1, from 10.30.30.30, 00:00:08 ago, via FastEthernet1/0
      Route metric is 20, traffic share count is 1


Loopback IP is just redistributed to OSPF so it should be an E2 route.

However based on the two routes above, the one via the intra-area link is always being prefered over the one via the MPLS network even if I adjust the redistribution metric. Both are E2 routes already. What's the difference between the two routes and why the other is being prefered always regardless of metric set?