A Novel Framework for Inter-area MPLS Optimal Routing draft-he-ccamp-optimal-routing-00.txt

1. A Novel Framework for Inter-area MPLS Optimal Routingdraft-he-ccamp-optimal-routing-00.txt Peng He, penghe@site.uottawa.ca Gregor v. Bochmann, bochmann@site.uottawa.ca 67th IETF San Diego November 2006

2. Summary of Requirements • This draft is about inter-area MPLS optimal routing • The basic requirement for this is to facilitate Inter-area MPLS Traffic Engineering • Needed by SPs who want to migrate to a multi-area environment • RFC4105 defines the detailed requirements for inter-area traffic engineering: • Optimality of the computed inter-area TE-LSP path • Capability to share backup bandwidth. • Inter-area TE-LSP setup time. • RSVP-TE and IGP scalability. 67th IETF San Diego November 2006

3. A Novel Framework for Inter-area MPLS Optimal Routing • Overlaid star network as backbone area • Overlap between backbone and non-backbone areas • Virtual-ABR (v-ABR) 67th IETF San Diego November 2006

4. Remaining Issues • Generalization of our scheme • The scheme could be used for other backbone networks, assuming edge nodes can establish optical connections between one another in an agile manner • Shared Inter-area Protection can be provided based on this scheme • Path or segments • Dynamic or static • Backup information management and exchanging • Related efficient signaling process • Interworking with PCE-based architecture is possible • By involving out scheme, some issues with PCE might be solved, e.g., • Reduce the amount of message exchanged and complexity of computing an inter-domain optimal path • Improve the efficiency of RSVP-TE when setting up a long path 67th IETF San Diego November 2006

5. Next Actions • Implementation status • We plan to implement our scheme on the AAPN prototype by next summer. 67th IETF San Diego November 2006