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IETF 83 Composite Link Update

These three documents propose requirements, framework, and use cases for composite link technologies, addressing new challenges, existing mechanisms, and how to bind LSPs to component links.

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IETF 83 Composite Link Update

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  1. IETF 83 Composite Link Update co-author/presenter: Andy Malis co-authors: Dave McDysan Eric Osborne Ning So Curtis Villamizar Lucy Yong

  2. Three Composite Link Drafts • Composite Link Requirements • WG document • Composite Link Framework • Requesting adoption as WG document (milestoned in the WG charter) • Composite Link Use Cases • Requesting adoption as WG document (not specifically milestoned in the WG charter)

  3. Composite Link Requirements 2012-01-30 draft-ietf-rtgwg-cl-requirement-05 • Changes since 03 and 04 versions: • Appendix A and B moved to CL Use Cases (05) • Management section added (04 version) • FR#21 added in 04 version • FR#21 split into two in 05 version • FR#21 = ability to bind an LSP to a particular component link • FR#22 = ability to bind co-routed bi-directional LSP to same component in both directions • Removed informational sentence in DR#1 • Removed references specific to deleted appendices

  4. Composite Link Framework 2012-03-07 draft-so-yong-rtgwg-cl-framework-05 • Substantially changed since 04 version with a new approach • Composite Link Key Characteristics • Architecture Tradeoffs • New Challenges • Existing Mechanisms • Mechanisms Proposed in Other Documents • Required Protocol Extensions and Mechanisms • Includes Framework Requirement Coverage by Protocol • Requested as convenience to implementers • Requesting adoption as a WG document • Milestoned in the WG charter • Authors feel this is a solid WG starting point

  5. Composite Link Use Cases 2012-02-22 draft-symmvo-rtgwg-cl-use-cases-00 • Provides a set of use cases and design considerations for composite links • Some content moved from formerly last called CL Requirements •  Existing Network Operator Practices and Protocol Usage •  Existing Multipath Standards and Techniques • Some content moved from CL Framework 04 version • Composite Link Foundation Use Cases • Some new content • Delay Sensitive Applications •  Large Volume of IP and LDP Traffic •  Composite Link and Packet Ordering •  Appendix C: Characteristics of Transport in Core Networks • Requesting adoption as a WG document • Not specifically milestoned in the WG charter • General WG consensus to create separate Use Cases document

  6. Proposed Next Steps • Composite Link Requirements • Option #1: omit references to Use Cases and advance separately • Option #2: last call again but advance CL documents together • Authors prefer option #2 – Advancing together could identify a need to clarify/augment requirements based upon discussion of framework and use cases. • Composite Link Framework • Requesting adoption as a WG document • Milestoned in the WG charter • Composite Link Use Cases • Requesting adoption as a WG document • May need a new charter milestone (optional?) • Authors feel that all three documents are solid

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