BSPM Broadband service problem management CCM Continuity check message CE Customer edge CFM Connectivity fault management DMM Delay measurement message DRMM Delay Reply measurement message E-LMI Ethernet local management interface LBM Loopback message LBR Loopback reply message MEF Metro ethernet forum MEP Maintenance end point MIP Maintenance intermediate point OAM Operation administration and maintenance PAMS Transport network resources provisioning and management system SLA Service level agreement U-PE User-facing provider edge OAMPDU OAM packet data unit IP乙太網路