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MPLS-TP Linear Protection draft-weingarten-mpls-tp-linear-protection-04

Stewart Bryant (stbryant@cisco.com), Nurit Sprecher (nurit.sprecher@nsn.com), Annamaria Fulignoli (annamaria.fulignoli@ericsson.com), Huub van Helvoort ( hhelvoort@huawei.com) Yaacov Weingarten (yaacov.weingarten@nsn.com ).

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MPLS-TP Linear Protection draft-weingarten-mpls-tp-linear-protection-04

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  1. Stewart Bryant (stbryant@cisco.com), Nurit Sprecher (nurit.sprecher@nsn.com), Annamaria Fulignoli (annamaria.fulignoli@ericsson.com), Huub van Helvoort (hhelvoort@huawei.com) Yaacov Weingarten (yaacov.weingarten@nsn.com) MPLS-TP Linear Protectiondraft-weingarten-mpls-tp-linear-protection-04

  2. Changes from draft-03 • Addressed comments received both at IETF74 and off-line • Sections on protection architecture and network objectives merged into Survivability Framework • Changes to format of the Protection State Coordination (PSC) control packet • Defined the states of the protection and their side-effects on the protocol control unit • Normal state – traffic on working, no protection condition • Protecting state – traffic on recovery path • Unavailable state – no protection available, either due to lockout or failure of recovery path • Additional description of the actions taken for various conditions.

  3. Open issues • Extensions for 1:n in separate draft or within current draft • PSC protocol – • Single phase – immediate switchover -as proposed in current draft • Two phase – switchover only after acknowledgement - as specified in GMPLS segment protection, necessary for 1:n protection

  4. Next steps • Resolve open issues • Request comments and contributions to make the draft more complete • Advance to working group draft

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