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Multicast Distribution Tree Extensions for IS-IS

Multicast Distribution Tree Extensions for IS-IS. draft-yong-isis-ext-4-distribution-tree-02 Lucy Yong < lucy.yong@huawei.com > Donald Eastlake <d3e3e3@gmail.com> Andrew Qu < laodulaodu@gmail.com >. Changes from -01 to -02. Add a section on Reverse Path Forwarding Check (RPFC)

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Multicast Distribution Tree Extensions for IS-IS

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  1. Multicast Distribution Tree Extensions for IS-IS draft-yong-isis-ext-4-distribution-tree-02 Lucy Yong <lucy.yong@huawei.com> Donald Eastlake <d3e3e3@gmail.com> Andrew Qu <laodulaodu@gmail.com>

  2. Changes from -01 to -02 • Add a section on Reverse Path Forwarding Check (RPFC) • Performing this check is optional • Add a section on Mobility Support • Both sources and listeners can move • Minor Correction to sub-TLV format • Editorial improvements

  3. Benefits • Support for multicast, as well as unicast, is important for a variety of applications. • Extending the IGP to support multicast traffic distribution as well as unicast traffic forwarding has significant benefits: • Faster convergence: When a separate protocol is used, such as PIM, the IGP converges first, then PIM converges, to the convergence times add. • Using one base protocol is simpler, more efficient, and makes automated configuration easier.

  4. Next Step • (Past Steps: Technical presentation at IETF 88 & 87 http://www.ietf.org/proceedings/88/slides/slides-88-isis-6.pdfhttp://www.ietf.org/proceedings/87/slides/slides-87-isis-4.pdf) • Request that this be adopted as a WG draft • There have been questions and suggestions for improvement but no objections • Additional Work • Security Considerations section needs work • Interworking with PIM – could be a separate draft

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