Specifications

LA-210 Ver. 1.5 Introduction C-1
Appendix C
Operation, Administration
and Maintenance (OAM)
This appendix describes the Ethernet OAM functionality of LA-210.
C.1 Introduction
Currently LA-210 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 only used for performance measurements when
using two RAD units working opposite each other or when working against a RAD
that runs an older version of RAD’s Ethernet OAM software. This appendix
describes the pre-standard implementation. The standard implementation can be
found in the standards Y.1731 and IEEE P802.1ag documents.
LA-210 has the following capabilities for providing operation, administration, and
maintenance (OAM) in the 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 the 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.
Flow Ethernet Virtual Connection : An association of two or more
UNIs that limits the exchange of Service Frames to UNIs in the
Ethernet Virtual Connection
Point-to-point Flow Flow connecting exactly two UNIs