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August 16, 2006
Sound MPLS route redistribution
InfoWorld: I usually file things like this under "duh", but a recent conversation with a network architect made me think that it's worth noting in public space.
I recently had a problem related to dynamic route distribution in an MPLS environment. Several remote sites were served via a Paetec MPLS network, all sites falling under a common major net, 192.168.0.0/16, with DMZ and edge networks built on another major private net. In a frame-relay or PTP network, routing would easily be handled by EIGRP or OSPF, or even static routes, and moving subnets from one site to another would be as simple as referencing them in the routing table of a core switch or router at the target site. In an MPLS environment, however, the routers connecting the LAN to the MPLS network are controlled by the provider, and the nature of MPLS dictates that these routers have explicit routes that are propagated among the participating MPLS routers via BGP.
Posted by imlazar at August 16, 2006 11:57 PM