OSPF Extensions for ASON Routing draft-dimitri-ccamp-gmpls-ason-routing-ospf-00.txt

1
OSPF Extensions for ASON Routing
draft-dimitri-ccamp-gmpls-as
on-routing-ospf-00.txt

• IETF66 - Montreal - Jul06
• Dimitri Papadimitriou (Alcatel)
• ltdpapadimitriou_at_psg.comgt

2
Since Last IETF 65 meeting

• Split draft-dimitri-ccamp-gmpls-ason-routing-sol-0
  1.txt into OSPF and IS-IS dedicated documents
• Facilitate review and progress
• Submitted only OSPF version (IS-IS right after
  meeting)
• Revision (see next slide)

3
Extensions - OSPFv2

• Additions
• Reachability
• Link Attributes
• Scoping
• Hierarchy

• OSPFv2
• Extend top level Node Attribute sub-TLVs to
  support
• address IPv4/IPv6 prefixes (two new sub-TLVs)
• Discriminate between termination and switching
  capability additional ISCD sub-TLV
• TE link advertisements association to their resp.
  local-remote TE Router_ID relationship(s)
• new sub-TLV of top level link TLV (local/remote
  TE Router_ID)
• Prefixes part of the reachability advertisements
  association to their respective local TE
  Router_ID
• new sub-TLV of top level Node attribute TLV
  (local TE Router_ID)
• LSA import/export rules/conditions (TE LSA, Type
  1)
• Per area, selection of
• upward info dissemination (U bit in TE router
  cap. TLV) RC with highest router ID (selection)
• downward info dissemination (D bit in TE router
  cap. TLV) RC with highest router ID (selection)
  Associated Area ID
• Loop prevention mechanism Associated Area ID
  sub-TLV

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Next revision

• 1) Add link_id processing (same as RFC 3630)
• 2) Describe relationship of OSPF areas to ASON
  RAs (to be included in next revision) in add. to
  eval-doc.
• 3) Add RC reachability precondition for
  considering a RC as capable to pass information
  between levels

5
Next Steps

• Become Working group document ?
• (still) ask feedback from other parties involved
  in the process
• Routing protocol WG for protocol feedback
• Ext. SDOs for functional feedback