Service Manual

Table Of Contents

The default is Disabled.

2. Configure the transmit interval (mandatory). The interval specified applies to all MEPs in the domain.

ECFM DOMAIN mode

ccm transmit-interval seconds

The default is 10 seconds.

Enabling Cross-Checking

To enable cross-checking, use the following commands.

1. Enable cross-checking.

ETHERNET CFM mode

mep cross-check enable

The default is Disabled.

2. Start the cross-check operation for an MEP

ETHERNET CFM mode

mep cross-check mep-id

3. Configure the amount of time the system has to wait for a remote MEP to come up before the cross-

check operation is started.

ETHERNET CFM mode

mep cross-check start-delay number

Sending Loopback Messages and Responses

Loopback message and response (LBM, LBR), also called Layer 2 Ping, is an administrative echo

transmitted by MEPs to verify reachability to another MEP or MIP within the maintenance domain. LBM

and LBR are unicast frames.

• Send a Loopback message

EXEC Privilege mode

ping ethernet domain name ma-name ma-name remote {mep-id | mac-addr mac-

address}source {mep-id | port interface}

Sending Linktrace Messages and Responses

Linktrace message and response (LTM, LTR), also called Layer 2 Traceroute, is an administratively sent

multicast frames transmitted by MEPs to track, hop-by-hop, the path to another MEP or MIP within the

maintenance domain.

All MEPs and MIPs in the same domain respond to an LTM with a unicast LTR. Intermediate MIPs forward

the LTM toward the target MEP.

802.1ag