OSPF area through MPLS

[admin_2]

Hello,

Here is the network I'm working on :

Host --- [OSPF Area 100] --- 4506 ------- 7204 ------- ( IP ) ---------- 10.100.0.0

| ------ 4506 ------- 7204 ------- ( MPLS )

I'd like to link the Host (in the OSPF Area 100) to the network 10.100.0.0 by using the same OSPF area 100 on this network (10.100.0.0), via the IP MPLS network.

Maybe I have to use a virtual link and/or use partitioning.

I'm quite a newbie in this field, so I'd like to have your opinion and your help about this problem.

Thanks,

Eric

[#2]

Sorry for the bad diagram...

You'll have to shift the "| ------ 4506 ------- 7204 ------- ( MPLS )" to the right, the "|" going behind (because linked to) the OSPF area 100.

Eric

[ruwhite]

The best bet is probably to use a sham link:

http://www.cisco.com/en/US/products/sw/iosswrel/ps1839/products_feature_guide09186a0080087ce2.html

You might be able to run a simple ospf adjacency across the MPLS link, if it's a layer 2 emulating tunnel.

:-)

Russ.W

[#4]

Thanks a lot for the link, this is exactly what I need.

But do you think that the sham-link is possible without a backdoor link between the 2 "same-numbered areas" ?

Eric

[ruwhite]

Yes, certainly... You can use sham links between areas with no backdoor link.

:-)

Russ.W