Specifications

RICi-4E1/T1, RICi-8E1/T1 Ver. 2.0 Introduction C-1
Appendix C
Operation,
Administration, and
Maintenance (OAM)
This appendix describes the Ethernet OAM functionality of
RICi-4E1/T1, RICi-8E1/T1.
C.1 Introduction
Currently RICi-4E1/T1, RICi-8E1/T1 support pre-standard implementation of
Ethernet OAM based on Y.1731 and standard implementation based on Y.1731
and IEEE P802.1ag. The pre-standard implementation is used only for
performance measurements when using two RAD units working opposite each
other or when working opposite a RAD device with an older version of RAD
Ethernet OAM. This appendix describes the pre-standard implementation. The
standard implementation can be found in Y.1731 and IEEE P802.1ag.
RICi-4E1/T1, RICi-8E1/T1 have the following capabilities for providing operation,
administration, and maintenance (OAM) in packet-switched networks:
• Continuity check
• Non-intrusive loopback which used to detect loss of bidirectional continuity
• Performance measurements (per service).
Table C-1 lists the Ethernet OAM-related terms used in this appendix.
Table C-1. Ethernet OAM Terminology
Term Description
UNI User Network Interface. The physical demarcation point
between the responsibility of the Service Provider and the
responsibility of the Subscriber
UNI_C Customer side of a UNI link
UNI_N Network side of a UNI link
Service frame An Ethernet frame transmitted across the UNI toward the
Service Provider or an Ethernet frame transmitted across the
UNI toward the Subscriber.