MPLS VPN Migration Strategies

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MPLS VPN Migration Strategies

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How can you minimize the effect of core migration to MPLS for regular IP traffic? Use conditional label advertising. n Can you allocate labels only to PE loopback addresses if you are using an ATM core? Yes, with conditional label advertising. n What are the benefits of edge-first migration toward MPLS infrastructure? It is easier and quicker to implement. It enables clear separation of migration issues. It does not involve any IP reconfiguration of core devices in the network. n What are the drawbacks of edge-first migration toward MPLS infrastructure? When implemented with the GRE tunnels it suffers from encapsulation overhead. It has severe scalability constraints. It requires point-to-point links between islands of MPLS...

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