C
HAPTER
14
| Basic Administration Protocols
Connectivity Fault Management
– 537 –
or initiation of connectivity. The receiving maintenance point should
respond to the loop back message with a loopback reply.
â—† 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.
â—† If the continuity check database does not have an entry for the
specified maintenance point, an error message will be displayed.
â—† 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
user.
PARAMETERS
These parameters are displayed:
◆ 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)
â—† Target
â–
MEP ID – The identifier of a remote MEP that is the target of a
loopback message. (Range: 1-8191)
â–
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
◆ Counts – 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)
WEB INTERFACE
To transmit loopback messages:
1. Click Administration, CFM.
2. Select Transmit Loopback 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, set the number of times the loopback message is to be
sent.
5. Click Apply.
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