Chapter 13
| Basic Administration Protocols
Connectivity Fault Management
– 491 –
the configured time period, and fault alarms are enabled, a corresponding trap will
be sent. No further fault alarms are sent until the fault notification generator has
been reset by the passage of a configured time period without detecting any
further faults. Upon receiving a fault alarm, you should inspect the related SNMP
objects for the reporting MEP, diagnose the fault, correct it, and re-examine the
MEP’s SNMP objects to see whether the fault notification generator has been reset.
Configuration Guidelines
1. Configure the maintenance domains with the MD List (see "Configuring CFM
Maintenance Domains").
2. Configure the maintenance associations with MA List (see "Configuring CFM
Maintenance Associations").
3. Configure the local maintenance end points (MEPs) which will serve as the
domain service access points for the specified maintenance association using
the MEP List (see "Configuring CFM Maintenance Associations").
4. Enter a static list of MEPs assigned to other devices within the same
maintenance association using the Remote MEP List (see "Configuring
Remote Maintenance End Points"). This allows CFM to automatically verify the
functionality of these remote end points by cross-checking the static list
configured on this device against information learned through continuity
check messages.
5. Enable CFM globally on the switch using the Configure Global screen (see
"Configuring Global Settings for CFM").
6. Enable CFM on the local MEPs using the Configure Interface screen (see
"Configuring Interfaces for CFM").
7. Enable continuity check and cross-check operations, and configure AIS
parameters using the Configure MA – Configure Details screen (see
"Configuring CFM Maintenance Associations").
Other configuration changes may be required for your particular environment,
such as adjusting the interval at which continuity check messages are sent (see
"Configuring CFM Maintenance Associations"), or setting the start-up delay for the
cross-check operation (see "Configuring Global Settings for CFM"). You can also
enable SNMP traps for events discovered by continuity check messages or cross-
check messages (see "Configuring Global Settings for CFM").
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