The objects in this MIB module are used to manage the Ethernet in the First Mile (EFM) Ethernet Passive Optical Network (EPON) Interfaces as defined in IEEE P802.3ah clauses 60, 64, and 65. The following reference is used throughout this MIB module: [802.3ah] refers to: Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - Media Access Control Parameters, Physical Layers and Management Parameters for subscriber access networks. IEEE Std 802.3ah-2004, October 2004. Of particular interest are clause 64 (Multi-Point Control Protocol - MPCP), clause 65 (Point-to-Multipoint Reconciliation Sublayer - P2MP RS), clause 60 (Ethernet Passive Optical Network Physical Medium Dependent - EPON PMDs), clause 30, 'Management', and clause 45, 'Management Data Input/Output (MDIO) Interface'. Copyright (C) The IETF Trust (2007). This version of this MIB module is part of 4837; see the RFC itself for full legal notices. Key abbreviations: BER - Bit Error Rate BW - bandwidth CRC - Cyclic Redundancy Check EFM - Ethernet First Mile EPON - Ethernet Passive Optical Network FEC - Forward Error Correction LLID - Logical Link Identifier MAC - Media Access Control Mbps - Megabit per second MDIO - Management Data Input/Output MPCP - Multi-Point Control Protocol OLT - Optical Line Terminal (Server unit of the EPON) OMP - Optical Multi-Point ONU - Optical Network Unit (Client unit of the EPON) P2MP - Point-to-Multipoint PHY - Physical Layer PMD - Physical Medium Dependent PON - Passive Optical Network RTT - Round Trip Time SLD - Start of LLID Delimiter TQ - Time Quanta