Ethernet Oam Cfm Command Set - ADTRAN AOS Version R10.1.0 Command Reference Manual

Command Reference Guide

Ethernet OAM CFM Command Set

E OAM CFM C S
THERNET OMMAND ET
Ethernet operations, administration, and maintenance (OAM) connectivity fault management (CFM) is a
type of service management for wide area network (WAN) Ethernet networks over an entire Ethernet
service instance. Ethernet OAM CFM provides maintenance and monitoring within multiple network
domains and different domain levels, and is specifically concerned with detecting faults over the service
instance. Using a system of messages and notifications within the service domain, CFM can discover
Ethernet service instance connection paths, locate and verify faults in the connection, isolate any
discovered faults, give notification of discovered faults, and assist in fault recovery.
CFM operates between maintenance domains (MDs), MD levels, maintenance intermediate points (MIPs),
and maintenance endpoints (MEPs). MDs are administrator domains of switches and routers, created for
the purpose of managing a WAN network. Each MD is nested in a hierarchy, and these hierarchies create
MD levels. Each level is specific to the MD, as each level is made up of a different MD along the service
instance. These levels are created by the beginning and termination of MDs using MIPs and MEPs. MIPs
are maintenance points within the MD, and MEPs are maintenance points that terminate the domain.
Ethernet OAM CFM in AOS deals specifically with MEPs in the AOS product. MEPs terminate Layer 2
traffic and are typically routers that convert Layer 2 traffic into a Layer 3 interface. CFM detects service
connectivity problems by sending continuity check messages (CCMs) between MEPs, by sending path
trace messages (Ethernet traceroute) between MEPs, and by sending loopback messages (Ethernet ping)
between MEPs.
The Ethernet OAM CFM command set describes the commands needed for configuring MDs,
maintenance associations (MAs), and MEPs. To enable Ethernet OAM CFM functionality, enter the
command ethernet cfm on page 943 from the Global Configuration mode prompt as follows:
>enable
#configure terminal
(config)#ethernet cfm
(config)#
Once Ethernet OAM CFM is enabled, you must create a maintenance domain using the ethernet cfm
domain <name> level <level> command (refer to ethernet cfm domain on page 944). This command is
entered from the Global Configuration mode prompt, and enters the maintenance domain configuration.
Enter the command as follows:
>enable
#configure terminal
(config)#ethernet cfm domain domain1 level 6
(config-ecfm-domain)#
60000CRG0-35E Copyright © 2012 ADTRAN, Inc. 3091