Extended RSVPTE for PointtoMultipoint LSP Tunnels draftyasukawamplsrsvpp2mp04.txt

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Extended RSVP-TE for Point-to-Multipoint LSP
Tunnelsdraft-yasukawa-mpls-rsvp-p2mp-04.txt

• Editors
• Seisho Yasukawa (yasukawa.seisho_at_lab.ntt.co.jp)
• Alan Kullberg (alan.kullberg_at_motorola.com)
• Lou Berger (lberger_at_movaz.com)
• Co-Authors
• Dean Cheng (dcheng_at_cisco.com)
• Markus Jork (mjork_at_avici.com)
• Hisashi Kojima (kojima.hisashi_at_lab.ntt.co.jp)
• Dimitri Papadimitriou (Dimitri.Papadimitriou_at_al
  catel.be)
• Andrew G. Malis (Andy.Malis_at_tellabs.com)
• Koji Sugisono (sugisono.koji_at_lab.ntt.co.jp)
• Masanori Uga (uga.masanori_at_lab.ntt.co.jp)
• JP Vasseur (jpv_at_cisco.com)
• Igor Bryskin (ibryskin_at_movaz.com)
• Adrian Farrel (adrian_at_olddog.co.uk)

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Summary

• Satisfy all aspects of P2MP Requirements draft
• Particular attention to
• All aspects of scalability
• Backwards compatibility of
• Egress nodes
• Non-branch transit nodes
• Flexible P2MP TE LSP operation
• Non-disruptive and simultaneous prune and graft
• Enable local tree optimization and modification
• Easy implementation and migration
• Re-uses conventional P2P mechanism to set up a
  branch LSP
• Prototype experience is positive

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Major Changes

• Significant changes since previous version
• A P2MP TE LSP is established by setting up
  multiple standard P2P TE LSPs from a sender node
  and all the downstream branch nodes along the P2P
  TE LSP to one of the leaf nodes of the P2MP TE
  LSP.
• A branched LSP is associated with original trunk
  LSP by newly defined Association object so that
  the P2MP LSP tunnel is established over the P2MP
  path.

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Major Changes (cont)

• Significant changes since previous version
• Branches encoded in Secondary EROs (SEROs)
• Each SERO runs from a branch to a leaf
• Gives the ability to graft and prune easily
• Makes efficient scaling a possibility
• Re-uses a concept from End-to-End Recovery
• Trees recorded in Secondary RROs (SRROs)
• Use of Association Object to link together LSPs
  for the same tree
• Makes P2MP make-before-break easier
• Allows parallel LSPs in the same tree with
  resource sharing
• Re-uses a concept from End-to-End Recovery
• Extensive descriptive text to cover LSP setup,
  modification and teardown procedures
• Added a third editor

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Remaining Issues

• There are two solutions draft
• WG doesnt want two solutions
• Both solutions address the same problem space
• Missing pieces rapidly being supplied by both
  groups
• The two solutions show some signs of converging
• The two sets of authors should sit down together
  and try to reach a common solution ASAP
• Minor edits and clarifications

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Next Actions

• Charter milestone
• Nov 04  Submit document(s) specifying protocol
  extensions, enhancements and mechanisms for setup
  of P2MP TE LSPs
• Complete minor edit and clarification
• Welcome feedback and discussion on the list
• WG direction on merging P2MP solutions drafts?