Recommendation ITU-T G.8121/Y.1381 Amendment 1 (01/2024) Characteristics of MPLS-TP equipment functional blocks
Summary
History
FOREWORD
Table of Contents
1 Scope
2 References
3 Definitions
     3.1 Terms defined elsewhere
     3.2 Terms defined in this Recommendation
4 Abbreviations and acronyms
5 Conventions
6 Supervision
     6.1 Defects
          6.1.1 Summary of entry/exit conditions for defects
          6.1.2 Continuity supervision
               6.1.2.1 Loss of continuity defect (dLOC)
          6.1.3 Connectivity supervision
               6.1.3.1 Mismerge defect (dMMG)
               6.1.3.2 Unexpected MEP defect (dUNM)
               6.1.3.3 Degraded signal defect (dDEG)
          6.1.4 Protocol supervision
               6.1.4.1 Unexpected periodicity defect (dUNP)
               6.1.4.2 Unexpected CoS defect (dUNC)
               6.1.4.3 Protection protocol supervision
                    6.1.4.3.1 Linear protection failure of protocol provisioning mismatch on bridge type (dFOP-PMb)
                    6.1.4.3.2 Linear protection failure of protocol provisioning mismatch on Capabilities TLV (dFOP-PMc)
                    6.1.4.3.3 Linear protection failure of protocol no response (dFOP-NR)
                    6.1.4.3.4 Linear protection failure of protocol configuration mismatch (dFOP-CM)
                    6.1.4.3.5 Linear protection failure of protocol time out (dFOP-TO)
          6.1.5 Maintenance signal supervision
               6.1.5.1 Remote defect indicator defect (dRDI)
               6.1.5.2 Alarm indication signal defect (dAIS)
               6.1.5.3 Locked defect (dLCK)
               6.1.5.4 Client signal fail defect (dCSF)
     6.2 Consequent actions
     6.3 Defect correlations
     6.4 Performance filters
7 Information flow across reference points
8 MPLS-TP processes
     8.1 G-ACh process
          8.1.1 Overview
          8.1.2 G-ACh insertion process
          8.1.3 G-Ach extraction process
     8.2 TC/Label processes
          8.2.1 TC/Label source processes
          8.2.2 TC/Label sink processes
          8.2.3 Label stack copy process
     8.3 Queuing process
     8.4 MPLS-TP-specific GFP-F processes
          8.4.1 MPLS-TP-specific GFP-F source processes
          8.4.2 MPLS-TP-specific GFP-F sink processes
     8.5 Control word (CW) processes
          8.5.1 CW insertion process
          8.5.2 CW extraction process
     8.6 OAM related processes used by server adaptation functions
          8.6.1 Selector process
          8.6.2 AIS insert process
          8.6.3 LCK generation process
     8.7 OAM related processes used by adaptation functions
          8.7.1 MCC and SCC mapping and demapping
               8.7.1.1 ECC mapping
               8.7.1.2 ECC demapping
          8.7.2 APS insert and extract processes
               8.7.2.1 APS insert process
               8.7.2.2 APS extract process
          8.7.3 CSF insert and extract processes
               8.7.3.1 CSF Insert process
               8.7.3.2 CSF extract process
     8.8 Proactive and on-demand OAM related processes
          8.8.1 Proactive continuity check or connectivity verification (CC/CV)
          8.8.2 Remote defect indication (RDI)
          8.8.3 On-demand connectivity verification (CV)
          8.8.4 Proactive packet loss measurement (LMp)
          8.8.5 On-demand packet loss measurement (LMo)
          8.8.6 Proactive packet delay measurement (DMp)
          8.8.7 On-demand packet delay measurement (DMo)
          8.8.8 Throughput test
          8.8.9 Route tracing (RT)
          8.8.10 LCK/AIS reception
          8.8.11 Lock instruct processes
     8.9 Dataplane loopback processes
          8.9.1 Dataplane loopback sink processes
          8.9.2 Dataplane loopback source processes
9 MPLS-TP layer functions
     9.1 Connection functions
          9.1.1 MPLS-TP connection function (MT_C)
               9.1.1.1 Protection process for SNC/S
          9.1.2 Connection functions for trail protection (MTp_C)
               9.1.2.1 Protection process for trail protection
          9.1.3 Connection functions for MPLS-TP shared ring protection (MSRP_C)
               9.1.3.1 Protection process for MPLS-TP shared ring protection
     9.2 Termination functions
          9.2.1 MPLS-TP trail termination (MT_TT) function
               9.2.1.1 MPLS-TP trail termination source (MT_TT_So) function
               9.2.1.2 MPLS-TP trail termination sink (MT_TT_Sk) function
          9.2.2 MPLS-TP trail termination function for trail protection (MTp_TT)
               9.2.2.1 MPLS-TP trail termination source function for trail protection (MTp_TT_So)
               9.2.2.2 MPLS-TP trail termination sink function for trail protection (MTp_TT_Sk)
          9.2.3 MPLS-TP shared ring protection trail termination function (MSRP_TT)
               9.2.3.1 MPLS-TP shared ring protection trail termination source function (MSRP_TT_So)
               9.2.3.2 MPLS-TP shared ring protection trail termination sink function (MSRP_TT_Sk)
     9.3 Adaptation functions
          9.3.1 MPLS-TP to MPLS-TP adaptation function (MT/MT_A)
               9.3.1.1 MPLS-TP to MPLS-TP adaptation source function (MT/MT_A_So)
               9.3.1.2 MPLS-TP to MPLS-TP adaptation sink function (MT/MT_A_Sk)
          9.3.2 MPLS-TP to MPLS-TP adaptation function for trail protection (MT/MTp_A)
               9.3.2.1 MPLS-TP to MPLS-TP adaptation source function for Trail Protection (MT/MTp_A_So)
               9.3.2.2 MPLS-TP to MPLS-TP adaptation sink function for trail protection (MT/MTp_A_Sk)
          9.3.3 MPLS-TP to MSRP adaptation function (MT/MSRP_A)
               9.3.3.1 MPLS-TP to MSRP adaptation source function (MT/MSRP_A_So)
               9.3.3.2 MPLS-TP to MSRP adaptation sink function (MT/MSRP_A_Sk)
          9.3.4 MSRP to MPLS-TP adaptation function (MSRP/MT_A)
               9.3.4.1 MSRP to MPLS-TP adaptation source function (MSRP/MT_A_So)
               9.3.4.2 MSRP to MPLS-TP adaptation sink function (MSRP/MT_A_Sk)
     9.4 MT diagnostic function
          9.4.1 MT diagnostic functions for MEPs (MTDe)
               9.4.1.1 MT diagnostic trail termination functions for MEPs (MTDe_TT)
                    9.4.1.1.1 MT diagnostic trail termination source function for MEPs (MTDe_TT_So)
                    9.4.1.1.2 MT diagnostic trail termination sink function for MEPs (MTDe_TT_Sk)
               9.4.1.2 MTDe to MT adaptation functions (MTDe/MT_A)
                    9.4.1.2.1 MTDe to MT adaptation source function (MTDe/MT_A_So)
                    9.4.1.2.2 MTDe to MT adaptation sink function (MTDe/MT_A_Sk)
          9.4.2 MT diagnostic functions for MIPs (MTDi)
               9.4.2.1 MT diagnostic trail termination functions for MIPs (MTDi_TT)
                    9.4.2.1.1 MT diagnostic trail termination source function for MIPs (MTDi_TT_So)
                    Symbol
                    9.4.2.1.2 MT diagnostic trail termination sink function for MIPs (MTDi_TT_Sk)
               9.4.2.2 MTDi to MT adaptation functions (MTDi/MT_A)
                    9.4.2.2.1 MTDi to MT adaptation source functions (MTDi/MT_A_So)
                    9.4.2.2.2 MTDi to MT adaptation sink function (MTDi/MT_A_Sk)
     9.5 MPLS-TP MEP and MIP functions
          9.5.1 MPLS-TP NCM MEP function
          9.5.2 MPLS-TP TCM MEP function
          9.5.3 MT MIP function
          9.5.4 MT half MIP function
10 MPLS-TP to Non-MPLS-TP client adaptation functions
     10.1 MPLS-TP to ETH adaptation function (MT/ETH_A)
          10.1.1 MPLS-TP to ETH adaptation source function (MT/ETH_A_So)
          10.1.2 MPLS-TP to ETH adaptation sink function (MT/ETH_A_Sk)
     10.2 MPLS-TP to SCC and MCC adaptation functions
          10.2.1 MT/SCC_A adaptation function
               10.2.1.1 MT to SCC adaptation source function (MT/SCC_A_So function)
               10.2.1.2 MT to SCC adaptation sink function (MT/SCC_A_Sk function)
          10.2.2 MT/MCC_A Adaptation Function
               10.2.2.1 MT to MCC adaptation source function (MT/MCC_A_So function)
               10.2.2.2 MT to MCC adaptation sink function (MT/MCC_A_Sk function)
11 Non-MPLS-TP server to MPLS-TP adaptation functions
     11.1 SDH to MPLS-TP adaptation function (S/MT_A)
          11.1.1 VC-n to MPLS-TP adaptation functions (Sn/MT_A; n=3, 3-X, 4, 4-X)
               11.1.1.1 VC-n to MPLS-TP adaptation source function (Sn/MT_A_So)
               11.1.1.2 VC-n to MPLS-TP adaptation sink function (Sn/MT_A_Sk)
          11.1.2 LCAS-capable VC-n to MPLS-TP adaptation functions (Sn-X-L/MT_A; n=3, 4)
               11.1.2.1 LCAS-capable VC-n to MPLS-TP adaptation source function (Sn-X-L/MT_A_So)
               11.1.2.2 LCAS-capable VC-n to MPLS-TP adaptation sink function (Sn-X-L/MT_A_Sk)
          11.1.3 VC-m to MPLS-TP adaptation functions (Sm/MT_A; m=11, 11-X, 12, 12-X)
               11.1.3.1 VC-m to MPLS-TP adaptation source function (Sm/MT_A_So)
               11.1.3.2 VC-m to MPLS-TP adaptation sink function (Sm/MT_A_Sk)
          11.1.4 LCAS-capable VC-m to MPLS-TP adaptation functions (Sm-X-L/MT_A; m=11, 12)
               11.1.4.1 LCAS-capable VC-m to MPLS-TP adaptation source function (Sm-X-L/MT_A_So)
               11.1.4.2 LCAS-capable VC-m to MPLS-TP adaptation sink function (Sm-X-L/MT_A_Sk)
     11.2 OTH to MPLS-TP adaptation function (O/MT_A)
          11.2.1 ODUk to MPLS-TP adaptation functions
               11.2.1.1 ODUk to MPLS-TP adaptation source function (ODUkP/MT_A_So)
               11.2.1.2 ODUk to MPLS-TP adaptation sink function (ODUkP/MT_A_Sk)
          11.2.2 HAO capable ODUk to MPLS-TP adaptation functions (ODUkP-h/MT_A; k=ODUflex)
               11.2.2.1 HAO capable ODUk to MPLS-TP adaptation source function (ODUkP-h/MT_A_So)
               11.2.2.2 HAO capable ODUk to MPLS-TP adaptation sink function (ODUkP-h/MT_A_Sk)
     11.3 PDH to MPLS-TP adaptation function (P/MT_A)
          11.3.1 Pq to MPLS-TP adaptation functions (Pq/MT_A; q = 11s, 12s, 31s, 32e)
               11.3.1.1 Pq to MPLS-TP adaptation source function (Pq/MT_A_So)
               11.3.1.2 Pq to MPLS-TP adaptation sink function (Pq/MT_A_Sk)
          11.3.2 LCAS-capable Pq to MPLS-TP adaptation functions (Pq-X-L/MT_A; q=11s, 12s, 31s, 32e)
               11.3.2.1 LCAS-capable Pq to MPLS-TP adaptation source function (Pq-X-L/MT_A_So)
               11.3.2.2 LCAS-capable Pq to MPLS-TP adaptation sink function (Pq-X-L/MT_A_Sk)
     11.4 Ethernet to MPLS-TP adaptation function
          11.4.1 ETH to MPLS-TP adaptation function (ETH/MT_A)
               11.4.1.1 ETH to MPLS-TP adaptation source function (ETH/MT_A_So)
               11.4.1.2 ETH to MPLS-TP adaptation sink function (ETH/MT_A_Sk)
Annex A  Mapping MPLS-TP packets to OTN using IMP
Appendix I   Examples of processing of packets with expired TTL
Appendix II  Flow of PHB information through MEP and MIP
Appendix III  SDL descriptions
Bibliography