Detail of YD/T 1474-2006

Introduction of YD/T 1474-2006

Technical requirements of multi-service transport platform (MSTP) based on SDH - Embedded with MPLS function 1 Scope This standard specifies the overall technical requirements for realizing embedded MPLS functions on SDH-based MSTP equipment, including the requirements in functional model, functional requirements, control plane functions, data plane functions, interface characteristics, performance parameters and index, protection switching and network management of MSTP. Specific specifications on equipment for different levels of network applications will be specified separately. This standard is applicable to SDH equipment which realize embedded MPLS functions, provide end-to-end QoS processing of Ethernet service, L2VPN service and Ethernet service and also provide multi-service transfer platforms (MSTP) with unified network management. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections) to, or revisions of, any of these publications do not apply to this standard. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition applies. GB/T 15941-1995 Requirements for synchronous digital hierarchy (SDH) optical fiber cable line systems YD/T 1022-1999 Requirement of synchronous digital hierarchy (SDH) equipment function YD/T 1061-2003 Specification of IP over SDH YD/T 1162.1-2005 Multiple protocol label switching (MPLS) technical requirements YD/T 1238-2002 Technical requirements for SDH multi-service transport platform YD/T 1345-2005 Technical requirements for SDH-based MSTP - Embedded with RPR YDN 099-1998 Synchronous optical transport network technology system (internal standard) ITU-T G.7042 (2001) Link capacity adjustment scheme (LCAS) for virtual concatenated signals ITU-T G.774.1 (2001) Synchronous digital hierarchy (SDH) – Bidirectional performance monitoring for the network element view ITU-T G.841 (1998) Types and characteristics of SDH network protection architectures ITU-T G.842 (1997) Interworking of SDH network protection architectures ITU-T M.3100 (1995) Generic network information model ITU-T Q.822 (1994) Stage 1, stage 2 and stage 3 description for the Q3 interface - Performance management ITU-T X.733 (1992) Information technology - Open systems interconnection - Systems management: Alarm reporting function ITU-T X.738 (1993) Information technology - Open systems interconnection - Systems management: Summarization function ITU-T X.739 (1993) Information technology - Open systems interconnection - Systems management: Metric objects and attributes ITU-T Y.1711 Operation & maintenance mechanism for MPLS networks ITU-T Y.1720 Protection switching for MPLS networks IEEE 802.17 Resilient packet ring (RPR) IETF RFC 1661 The point-to-point protocol (PPP) IETF RFC 1662 PPP in HDLC-like framing IETF RFC 2205 Resource Reservation protocol (RSVP) - Version 1 functional specification IETF RFC 2615 PPP over SONET/SDH IETF RFC 2702 Requirements for traffic engineering over MPLS IETF RFC 3031 Multiprotocol label switching architecture IETF RFC 3032 MPLS label stack encoding IETF RFC 3036 LDP specification IETF RFC 3037 LDP applicability IETF RFC 3209 RSVP-TE: Extensions to RSVP for LSP tunnels IETF RFC 3210 Applicability statement for extensions to RSVP for LSP-tunnels IETF RFC 3270 Multi-protocol label switching (MPLS) support of differentiated services IETF RFC 3916 Requirements for pseudo-wire emulation edge-to-edge (PWE3) IETF draft-ietf-mpls-rsvp-lsp-fastreroute Fast reroute extensions to RSVP-TE for LSP tunnels (Work in progress) IETF-Draft-ietf-pwe3-control-protocol Pseudo-wire Setup and Maintenance - Using the Label Distribution Protocol (LDP) (Work in progress) IETF Draft-ietf-pwe3-ethernet-encap-mpls Ethernet Encapsulation for pseudo-wire emulation edge-to-edge (Work in Progress) IETF Draft-ietf-l2vpn-vpls-ldp L2VPN LDP Signaling (Work in progress)   3 Abbreviations For the purposes of this standard, the following abbreviations apply. AC Attachment Circuit AF Assured Forwarding APS Automatic Protection Switching ATM Asynchronous Transfer Mode BDI Backward Defect Indication BE Best Effort CE Costumer Equipment CoS Class of Service CV Packet Connectivity Verification Packet Dserver Server Layer defect DpeerME Peer Network Maintenance Entity Defect DLOCV Loss of Connectivity Verification Defect dTTSI_Mis Trail Termination Source Identifier Mismatch Defect dTTSI_Mis Trail Termination Source Identifier Mismerge Defect dExcess Receiving Excess Rate of CV dUnknown Unknown Defect in the MPLS Network ECC Embedded Control Channel EF Expedited Forwarding EPL Ethernet Private Line EVPL Ethernet Virtual Private Line EPLAN Ethernet Private LAN EVPLAN Ethernet Virtual Private LAN ER Explicit Routing ETH Ethernet FDI Forward Defect Indication FEC Forwarding Equivalence Class FF Fixed Filter FCS Frame Check Sequence FS Forced Switch GFP Generic Framing Procedure HEC Header Error Check HDLC High Level Data Link Control IP Internet Protocol LAPS Link Access Procedure-SDH LCAS Link Capacity Adjustment Scheme LDP Label Distribution Protocol

Contents of YD/T 1474-2006

Foreword III 1 Scope 2 Normative references 3 Abbreviations 4 Model of MSTP embedded with MPLS function 4.1 Diagram of MSTP embedded with MPLS function 4.2 Reference model of MSTP embedded with MPLS function 4.3 Network architecture of MSTP embedded with MPLS 5 Requirements of MSTP embedded with MPLS function 5.1 Service process 5.2 Ethernet interface function 5.3 Flow classification 5.4 Layer 2 switching function requirements (optional) 5.5 MPLS processing layer function requirements 6 Control plane (CP) requirements 6.1 Signaling function requirements 6.2 MPLS OAM (optional) 6.3 QoS 6.4 MPLS traffic engineering (optional) 6.5 MPLS protection function 6.6 L2VPN 7 Data plane function requirements 7.1 Flow classification 7.2 Ethernet adaptation at edge node PE of MSTP network 7.3 Ethernet data processing at intermediary equipment P node of MSTP network 7.4 MPLS label architecture - PW label and tunnel label 7.5 MPLS label switching function 7.6 Functional requirements of adaptation of MPLS frames to SDH VC 8 Application of MSTP Embedded with MPLS - L2VPN 8.1 Ethernet service types supported by L2VPN provided by MSTP embedded with MPLS 8.2 L2VPN reference model and functional components 9 Performance indexes 9.1 Performance indexes of SDH layer 9.2 Performance indexes of MPLS layer 10 Requirements for interface 11 Protection switching 11.1 Protection mode 11.2 SDH protection switching 11.3 MPLS layer protection 11.4 Coordination of MPLS protection and SDH protection 12 NMS 12.1 Overview of NMS 12.2 Fault management function 12.3 Performance management function 12.4 Configuration management functions 12.5 Interface capability 12.6 Security management function 12.7 Basic billing management information Annex A (Informative) Combination of MPLS and RPR Annex B (Informative) Interconnection requirements