Recommendation ITU-T G.8023 Amendment 2 (01/2024) Characteristics of equipment functional blocks supporting Ethernet physical layer and Flex Ethernet interfaces 
Summary
History
FOREWORD
Table of Contents
Introduction
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 M-AI to client layer adaptation functions
     6.1 M-AI to ETH adaptation functions (M-AI/ETH_A)
          6.1.1 M-AI to ETH adaptation source function (M-AI/ETH_A_So)
          6.1.2 M-AI to ETH adaptation sink function (M-AI/ETH_A_Sk)
     6.2 M-AI to 10G Ethernet reconciliation sublayer adaptation functions (M-AI/ERS10G_A)
          6.2.1 M-AI to 10G Ethernet reconciliation sublayer source adaptation function (M-AI/ERS10G_A_So)
          6.2.2 M-AI to 10G Ethernet reconciliation sublayer sink adaptation function (M-AI/ERS10G_A_Sk)
     6.3 M-AI to Ethernet coding adaptation functions (M-AI/ETCy_A)
          6.3.1 M-AI to Ethernet coding adaptation source function (M-AI/ETCy_A_So)
          6.3.2 M-AI to Ethernet coding adaptation sink function (M-AI/ETCy_A_Sk)
     6.4 M-AI to CBR10G3 adaptation functions (M-AI/CBR10G3_A)
          6.4.1 M-AI to CBR10G3 adaptation source function (M-AI/CBR10G3_A_So)
          6.4.2 M-AI to CBR10G3 adaptation sink function (M-AI/CBR10G3_A_Sk)
     6.5 M-AI to Flex Ethernet (FlexE) adaptation functions (M-AI/FlexE_A)
          6.5.1 M-AI to FlexE adaptation source function (M-AI/FlexE_A_So)
          6.5.2 M-AI to FlexE adaptation sink function (M-AI/FlexE_A_Sk)
     6.6 M-AI to Flex Ethernet subgroup member (FlexESGM) function (M-AI/FlexESGM_A)
          6.6.1 M-AI to FlexE aware adaptation source function (M-AI/FlexESGM_A_So)
          6.6.2 M-AI to FlexESGM adaptation sink function (M-AI/FlexESGM_A_Sk)
7 Flex Ethernet (FlexE) functions
     7.1 FlexE trail termination function (FlexE_TT)
          7.1.1 FlexE trail termination source function (FlexE_TT_So)
          7.1.2 FlexE trail termination sink function (FlexE_TT_Sk)
     7.2 FlexE-n to FlexE Client adaptation function (FlexE-n/FlexEC_A)
          7.2.1 FlexE-n to FlexE Client adaptation source function (FlexE-n/FlexEC_A_So)
          7.2.2 FlexE-n to FlexE Client adaptation sink function (FlexE-n/FlexEC_A_Sk)
     7.3 Interworking function between FlexE Client and ETCy (FlexEC<>ETCy)
          7.3.1  FlexEC to ETCy interworking function (FlexEC> ETCy)
          7.3.2  ETCy to FlexEC interworking function (ETCy>FlexEC)
8 FlexE Client functions
     8.1 FlexE Client trail termination function (FlexEC_TT)
          8.1.1 FlexEC trail termination source function (FlexEC_TT_So)
          8.1.2 FlexEC trail termination sink function (FlexEC_TT_Sk)
     8.2 FlexE Client to Ethernet MAC layer adaptation function (FlexEC/ETH_A)
          8.2.1 FlexEC to ETH adaptation source function (FlexEC/ETH_A_So)
          8.2.2 FlexEC to ETH adaptation sink function (FlexEC/ETH_A_Sk)
     B.1 Supervision
          B.1.1 Defects
               B.1.1.1 Alignment supervision
                    B.1.1.1.1 FlexE overhead loss of frame (dLOF)
                    B.1.1.1.2 FlexE overhead loss of multi-frame (dLOM)
               B.1.1.2 Group supervision
                    B.1.1.2.1 Group ID mismatch (dGIDM)
                    B.1.1.2.2 FlexE map mismatch (dFMM)
     B.2 Generic processes
          B.2.1 Alignment processes
               B.2.1.1 FlexE overhead frame alignment
               B.2.1.2 FlexE overhead multi-frame alignment
          B.2.2 Overhead acceptance processes
               B.2.2.1 Group identification (GID) acceptance process
               B.2.2.2 Instance identification (IID) acceptance process
               B.2.2.3 FlexE map acceptance process