MPSL PE and CE with ospf

[samne ma]

Dear Expert,

please help to view this topology  and check:

[Giuseppe Larosa · Accepted solution]

Hello Samne,

have a look at the OSPF sham link concept to deal with backdoor links between sites like the link between R1 and R8 in your network diagram.

see

http://www.cisco.com/en/US/docs/ios/mpls/configuration/guide/mp_ospf_com_backbone.html

In order to build a working setup you need to have area 0 on PE-CE links on both sites and then you need an OSPF sham link between the PE nodes. The sham link will allow to build routes as O routes instead of O IA and this will allow to move traffic from direct link between sites.

Your current setup with non zero area connected to PE nodes with different area-id does not allow to move traffic from direct link to MPLS L3 VPN service

Hope to help

Giuseppe

[samne ma]

Dear Sir,

Thank you very much for you reply, your idea very usefull for me to complete my implementation MPLS in my network.

Thanks,

Samne

[shivjain]

Please look into the below post

http://www.mplsvpn.info/2008/12/what-to-ask-from-customer-if-he-demands.html

http://www.mplsvpn.info/2010/05/ospf-sham-link-in-different-area.html

regards

Shivlu Jain