Digisol DG-FS4526E, Management Manual

Page: 460 / 1162

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15 | Basic Administration Protocols
Connectivity Fault Management
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To transmit link trace messages:
1. Click Administration, CFM.
2. Select Transmit Link Trace from the Step list.
3. Select an entry from MD Index and MA Index.
4. Specify the source MEP, the target MEP using either its MEP identifier or
MAC address, and set the maximum number of hops allowed in the TTL
field.
5. Click Apply.
6. Check the results in the Link Trace cache (see "Displaying the Link
Trace Cache" ).
Figure 271: Transmitting Link Trace Messages
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ESSAGES
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.
CLI R
EFERENCES
"CFM Commands" on page 1023
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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.