Extended RSVPTE for PointtoMultipoint LSP Tunnels draftyasukawamplsrsvpp2mp04.txt - PowerPoint PPT Presentation

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Extended RSVPTE for PointtoMultipoint LSP Tunnels draftyasukawamplsrsvpp2mp04.txt

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Extensive descriptive text to cover LSP setup, modification and teardown procedures ... protocol extensions, enhancements and mechanisms for setup of P2MP TE LSPs ... – PowerPoint PPT presentation

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Title: Extended RSVPTE for PointtoMultipoint LSP Tunnels draftyasukawamplsrsvpp2mp04.txt


1
Extended RSVP-TE for Point-to-Multipoint LSP
Tunnels draft-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)

2
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

3
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.

F
G
H
A
B
C
D
E
I
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K
L
4
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

5
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

6
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?
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