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Seamless MPLS for Mobile Backhaul draft-li-mpls-mbb-seamless-mpls-00

Seamless MPLS for Mobile Backhaul draft-li-mpls-mbb-seamless-mpls-00. Zhenbin Li, L e i L i ( Huawei ) Manuel Julián López Morillo (Vodafone) Tianle Yang (China Mobile) IETF 87, Berlin, Germany. Seamless MPLS Network Architecture. Access. Aggregation. Core. Aggregation. Access. RR.

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Seamless MPLS for Mobile Backhaul draft-li-mpls-mbb-seamless-mpls-00

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  1. Seamless MPLS for Mobile Backhauldraft-li-mpls-mbb-seamless-mpls-00 Zhenbin Li, Lei Li (Huawei) Manuel Julián López Morillo (Vodafone) Tianle Yang (China Mobile) IETF 87, Berlin, Germany

  2. Seamless MPLS Network Architecture Access Aggregation Core Aggregation Access RR IS-IS L1 LDP IS-IS L1 LDP IS-IS L2 LDP Static Route LDP DoD Static Route LDP DoD AGN LSr ABR LSR ABR LSR AGN IBGP IBGP IBGP IBGP AN AN LSR LSR AGN LSR ABR ABR AGN ISIS ABR Loop-Back ISIS ABR Loop-Back • The key concepts for Seamless MPLS: Decoupling the transport layer and service layer. • The network will be divided into multiple IGP areas for access, aggregation and core network • IBGP run among the Area Boarder Routers (ABRs) to advertise labeled route. • LDP DoD is introduced to set up LSP on demand between AN and AGN.

  3. Seamless MPLS for Mobile Backhaul Networks Last Mile Access Aggregation Core BSC • Ring topology is adopted in mobile backhaul networks. • Variable devices with variable capability are deployed in the access ring and aggregation ring. CSG CSG RSG ASG BTS CSG NodeB CSG ASG RSG CSG eNB Service Layer RNC L2/L3 Services S-GW/MME Hierarchical BGP LSP Transport Layer BGP LSP LDP/TE LSP Next-Hop self Next-Hop self

  4. Scenarios for Network Architecture • Network Architecture 1: Network separated by Ases • Scenario 1: ASes connected by different ASBRs • Scenario 2: ASes connected by integrated ASBRs • Different network integrated in one AS but separated by different IGP areas

  5. Scenarios for Different Edge of Labeled BGP • Scenario 1: Cell Site/User PE devices as the edge • Scenario 2: ASG nodes as the edge • Scenario 3: RSG(ASBR) devices as the edge

  6. Overall New Requirements of Seamless MPLS for MBB • Requirements on MPLS TE • Proxy Egress LSP and BGP LSP Stitching • Unified OAM: end-to-end OAM for mobile service • Protection: end-to-end convergence in 50 ms • Scalability: improve scalability of MPLS TE • Requirements on Ring Network • LDP DoD: Multiple hops for provision of LDP DoD • LDP FRR: 100% network coverage • Requirements on L3VPN • Policy control: Reduce complexity on control route distribution • L3VPN OAM: SDH-like OAM requirement for mobile service

  7. Requirements and Solutions of Seamless MPLS for MBB(1) • Scalability • Auto Mesh and Enhancement: • Auto Mesh: [RFC4972] • Role-based Auto Mesh: [I-D.li-ccamp-role-based-automesh] • Service-Driven Tunnel: • [I-D.li-mpls-serv-driven-co-lsp-fmwk] • Auto Path Computation • [I-D.li-ospf-auto-mbb-te-path]

  8. Requirements and Solutions of Seamless MPLS for MBB(2) • Access Stitching • Transport Layer Stitching • Proxy TE: [I-D.li-mpls-proxy-te-lsp] • Proxy LDP DoD: proposed later • Service Layer Stitching • L3 Service Stitching: Hierarchy of VPN (HoVPN) • L2VPN Service stitching: Multi-Segment PW

  9. Requirements and Solutions of Seamless MPLS for MBB(3) • Reliability • MPLS TE • MPLS LDP • MRT FRR based on LDP MT: [I-D.li-rtgwg-ldp-mt-mrt-frr] • Policy Control: Improve Intelligence of IBGP • AIGP • [I-D.ietf-idr-aigp] • NEXTHOP_PATH ATTIBUTE • [I-D.zhang-idr-nexthop-path-attr-00]

  10. Requirements and Solutions of Seamless MPLS for MBB(4) • OAM • L2VPN • VPN Layer: MPLS TP for PW • Service Layer: Y.1731 for MAC • L3VPN • VPN Layer - L3VPN PM: [I-D.zheng-l3vpn-pm-analysis]/ [I-D.dong-l3vpn-pm-framework] • VPN Layer - IPFPM: [I-D.chen-coloring-based-ipfpm-framework] • Service Path Visualization • Trace the whole path in one operation

  11. Next Steps • Solicit more comments and feedback • Incorporate more requirements and solutions • Revise the draft

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