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Presented by: Malcolm Betts malcolm.betts@zte

LS293 - Request for G-ACh channel codepoint to support traditional transport environment and: draft-tsb-mpls-tp-ach-ptn. Presented by: Malcolm Betts malcolm.betts@zte.com.cn. What is being requested?.

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Presented by: Malcolm Betts malcolm.betts@zte

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  1. LS293 - Request for G-ACh channel codepoint to support traditional transport environmentand:draft-tsb-mpls-tp-ach-ptn Presented by: Malcolm Betts malcolm.betts@zte.com.cn

  2. What is being requested? • ITU-T SG15 requests the IETF to allocate a G-ACh code point as described in:draft-tsb-mpls-tp-ach-ptn • Allocation of this code point will: • Allow ITU-T to document the tools required to address the unique needs of the transport network • Make more efficient use of the resources of both organizations • The use of this G-ACh code point will fully comply with the framework and architecture for MPLS-TP Routing Area Open Meeting

  3. February meeting of SG15 • Concluded that a significant number of network operators view that their needs are not satisfied by the solutions currently under development in the IETF • Therefore, decided to document a targeted “PTN OAM” solution in ITU-T Recommendations • 8 Network operators from Europe and Asia submitted contributions supporting this approach • Plan to produce Recommendations for both the ITU PTN OAM and IETF OAM solutions e.g. • G.8113.1 – ITU PTN OAM solution • References RFC5718 for the MCC and SCC • G.8113.2 – IETF defined OAM solution Routing Area Open Meeting

  4. February meeting of SG15 (cont’d) • Developed material to describe the network environment that caused some network operators to request the PTN OAM solution • Differences are close to invisible at the level of the requirements in RFC5860 • Many of the issues only become apparent when the protocol and equipment behaviour is explored • For a description of the network environment for this application - see: • https://datatracker.ietf.org/documents/LIAISON/file1209.pdf • draft-tsb-mpls-tp-ach-ptn will be updated to include an applicability statement • Interconnection scenarios are either client/server (no interaction) or will use the IETF defined solution - see: • https://datatracker.ietf.org/documents/LIAISON/file1210.pdf Routing Area Open Meeting

  5. Background • ITU-T OAM solution for PTN applications is documented in draft Recommendation G.8113.1 • Uses same OAM tools as draft-bhh-mpls-tp-oam-y1731-06 • draft-bhh-mpls-tp-oam-y1731-00 posted 2009-03-04 • Supporting network operators have repeatedly indicated: • The need for rapid standardization of an OAM solution to meet their urgent network deployment needs • This solution meets the needs of their transport networks Routing Area Open Meeting

  6. Background (cont’d) • At the SG15 meeting some ITU-T Members made the assertion that the IANA ACh code point registry is concerned with “Naming and Numbering” and therefore has “regulatory” implications • The IETF should clarify that it is a registry of Protocol Identifiers Routing Area Open Meeting

  7. Where are we now? • Having a single solution is a desirable objective • However, it is also necessary to be pragmatic in standards • We have been working for more than 2 years without any indication of convergence • Due to delays in the standardization of a solution major network deployments have already occurred • Over 200,000 nodes running the solution in G.8113.1 have been deployed • Standardizing 2 solutions will prevent the proliferation of multiple regional/operator specific solutions • Allocation of an ACh code point for the ITU solution will • Ensure that this solution is unambiguously identified • In the event of an accidental interconnection between the ITU and IETF solutions the ITU OAM messages can be safely discarded • Protect the Internet • Reduces the amount of time we spend on this topic in future Routing Area Open Meeting

  8. Next Steps • Clarify that the ACh code point being requested in draft-tsb-mpls-tp-gach-ptn is a protocol identifier • Add an applicability/scope statement to draft-tsb-mpls-tp-gach-ptn • Make it a WG draft • Request an early allocation from IANA Routing Area Open Meeting

  9. Backup material • Interconnection scenarios • Note: • PSN: application environment for the IETF developed solution • PTN: application environment for the ITU developed solution Routing Area Open Meeting

  10. Interconnect 1PTN client over a PSN server Routing Area Open Meeting

  11. Interconnect 2PSN client over a PTN server Routing Area Open Meeting

  12. Interconnect 3 LSP or PW originating in a PTN network and terminating in a PSN network Routing Area Open Meeting

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