cfm loopback

Transmits a loopback message to a specific Maintenance End Point (MEP) or Maintenance Intermediate Point (MIP) in a specified domain.

Syntax

cfm loopback { domain name | ma ma-name | src-mep mep-id { target-mip HH:HH:HH:HH:HH:HH | target-mep mep-id }| number value | timeout time

Parameters

domain name: Specifies the maintenance domain to be used for a loopback message. The name attribute is case sensitive.
ma ma-name: Specifies the maintenance association to be used for a loopback message. The ma-name attribute is case-sensitive.
src-mep mep-id: Specifies the Source ID. The range of valid values is from 1 through 8192.
target-mip HH:HH:HH:HH:HH:HH: Specifies the MAC address of the MIP loopback destination.
target-mep mep-id: Specifies the destination ID. The range of valid values is from 1 through 8192.
number value: Specifies the number of loopback messages to be sent.
timeout time: Specifies the timeout used to wait for loopback reply in seconds.

Modes

Privileged EXEC mode

Usage Guidelines

The cfm loopback command sends a loopback message to a specific MEP or MIP in a specified domain for testing purposes.

Examples

Command example sending a message from MEP 2 to MEP 1 a total of ten times.

device# cfm loopback domain md1 ma ma1 src-mep 2 target-mep 1 timeout 10 number 10

cfm: Sending 10 Loopback to 000c.dbfb.5378, timeout 10 msec
Type Control-c to abort
Reply from 000c.dbfb.5378: time=1ms
Reply from 000c.dbfb.5378: time<1ms
Reply from 000c.dbfb.5378: time<1ms
Reply from 000c.dbfb.5378: time<1ms
Reply from 000c.dbfb.5378: time<1ms
Reply from 000c.dbfb.5378: time<1ms
Reply from 000c.dbfb.5378: time<1ms
Reply from 000c.dbfb.5378: time<1ms
Reply from 000c.dbfb.5378: time<1ms
A total of 10 loopback replies received.
Success rate is 100 percent (10/10), round-trip min/avg/max=0/0/1 ms.