Edge-Core ECS4660-28F Management Manual page 571

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Use the Administration > CFM (Transmit Loopback) page to transmit

Loopback Messages (LBMs). These messages can be used to isolate or

verify connectivity faults by submitting a request to a target node (i.e., a

remote MEP or MIP) to echo the message back to the source.

These parameters are displayed:

"CFM Commands" on page 1561

Loopback messages can be used for fault verification and isolation after

automatic detection of a fault or receipt of some other error report.

Loopback messages can also used to confirm the successful restoration

or initiation of connectivity. The receiving maintenance point should

respond to the loop back message with a loopback reply.

The point from which the loopback message is transmitted (i.e., a local

DSAP) and the target maintenance point must be within the same MA.

If the continuity check database does not have an entry for the

specified maintenance point, an error message will be displayed.

When using the command line or web interface, the source MEP used

by to send a loopback message is chosen by the CFM protocol.

However, when using SNMP, the source MEP can be specified by the

MD Index – Domain index. (Range: 1-65535)

MA Index – MA identifier. (Range: 1-2147483647)

Source MEP ID – The identifier of a source MEP that will send the

loopback message. (Range: 1-8191)

MEP ID – The identifier of a remote MEP that is the target of a

loopback message. (Range: 1-8191)

MAC Address – MAC address of a remote MEP that is the target of

a loopback message. This address can be entered in either of the

following formats: xx-xx-xx-xx-xx-xx or xxxxxxxxxxxx

Count – The number of times the loopback message is sent.

(Range: 1-1024)

Packet Size – The size of the loopback message. (Range: 64-1518

bytes; Default: 64 bytes)

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