HI
I have the following scenario. We are running OSPF on our LAN Core's and have Radio links as our Primary path back to the HQ, and MPLS Links (diginet) as backups on all our sites. We then have a Regional Data Centre (called RDC) inside the MPLS that needs to talk to all of the LAN networks via the MPLS but preferred path would be via the BSS (Business Systems backbone HQ Offices ) and then over the Primary path aka Radio links to all the various Sites. All Sites default gateway would be the BSS Core via the Radio links and like I said if a site Radio fails, it needs to switch over to their Local MPLS Router.
I have configured a GNS LAB with all the various sites and configured OSPF on the Site Core's and BGP on the MPLS. Routing is working as it should, I.E OSPF is redistributed into the BSS MPLS Router and all the Sites have full access to the RDC and back via the Preferred path aka BSS Core.
Now, I have tested the failover by shutting the Radio link interface of a Site, then failover happens via the MPLS Routers to the RDC and traffic from RDC back via the Site MPLS Router (not the BSS Core where the Radio links are) Un shut the interface and traffic switch over from MPLS to Radio Links as it should.
Problem: When I implement summarization on the LAN Core's in OSPF with command "area 1 range network range" all the other LAN Core's learns the new Summarized /19 or /21 of each site as they should . (making the routing tables on the LAN smaller, better) BUT, the RDC routes the Site traffic into the MPLS Cloud, and then route the Site traffic directly to the Site MPLS Routers, and not Via the Preferred BSS backbone Radio links path as previous.
Question: Why would BGP learn all the Site individual routes aka /19 or /21 but not take the summary route as desired ? (summarization will then happen on MPLS and LAN)
Am I missing something....
