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Copyright © 2004 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net 1 79th IETF - BeiJing Signaling Extension for MPLS Ring Yong Huang (huang.yong@huawei.com)huang.yong@huawei.com Yuanlong Jiang (yljiang@huawei.com)yljiang@huawei.com draft-huang-mpls-ring-signaling-extension-01.txt
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2 Copyright © 2004 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net 79th IETF - BeiJing Problem Statement Two point provision of LSP is required including the LSP running across MPLS ring (s) Without auto-provision mechanism, 4 point (even more as hop by hop) configuration is needed for a LSP to cross one ring not counting on the protection provision work. So, large amount of such LSP will cause large amount of configuration work. Configuration work for Protecting (link & node) the service on MPLS ring also calls for automatic method.
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3 Copyright © 2004 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net 79th IETF - BeiJing Solution Not using SPME label at working direction Avoiding hop by hop configuration and replaced by normal signaling. Provision one closed LSP at protection direction Link failure can be protected by pushing protection label on the packet and wrapping around, no need for signaling extension Node failure can be protected the same manner as link, with a little signaling extension to keep label continuity All Dynamic !
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4 Copyright © 2004 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net 79th IETF - BeiJing Solution 6 5 4 3 2 1 S D RING LSP Protect LSP ring label(35) label(20) label(99) label(52) label(100) label(111) Source S Destination D Label mapping Service LSP Physical link Protect lsp ring
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5 Copyright © 2004 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net 79th IETF - BeiJing Solution- node failure protection example 100 p2 100 p1 100 p3 6 5 4 3 2 1 S D RING LSP Protect LSP ring label(35) label(20) label(99) label(52) label(100) label(111) 源节点 S 宿节点 D 20 Support by signaling-ex
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6 Copyright © 2004 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net 79th IETF - BeiJing Solution 6 5 4 3 2 1 S D RING LSP Protect lsp ring label(35) label(20) label(98) 98/20 20/35 label(52) label(100) label(110) 100/98 110/100 52/110 Source S Destination D Label mapping Service LSP Physical link Protect lsp ring Signaling extension
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7 Copyright © 2004 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net 79th IETF - BeiJing Solution – LDP extension 0Notification (0x0001)Msg length 01234567890123456789012345678901 Message id status TLV Label mapping TLV Label mappinginfo 0x?length 01234567890123456789012345678901 00 in label egress ring/backup id Out label IMT resv Ingress ring/backup id EMT IMT : Ingress Mapping type EMT : Egress Mapping Type Ingress ring/backup id: ring id or backup id of the ingress port Inlabel: value of in label Egress ring/backup id : ring id or backup id of the egress port Outlabel: value of out label
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8 Copyright © 2004 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net 79th IETF - BeiJing Benefits Dynamically provision LSP service on MPLS ring considering multi-service deployed on one single metro, thousands of service LSPs will be deployed and frequent service adjustment for mobile backhauling make static solution worse. Little pre-provision work Dynamically achieve link and node protection
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9 Copyright © 2004 Juniper Networks, Inc. Proprietary and Confidentialwww.juniper.net 79th IETF - BeiJing Next Steps Output a revised new version based on comments and questions received
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