Usage Scenario
If the local MEP does not receive CCMs from its RMEP within a period of 3 times the interval at which CCMs are sent, the local MEP considers the path to the RMEP faulty. CFM considers a link faulty if all of the following conditions are true:
- The local MEP is physically connected to the RMEP.
- No MEP is configured on the peer device.
- CC is performed on the link.
A link fault alarm is falsely reported. To resolve this issue, run the active time command to set an RMEP activation time.
The local MEP with the ability to receive CCMs can accept CCMs only after the configured RMEP activation time elapses, which prevents false alarms.
After the configured RMEP activation time elapses, the local MEP considers the path to the RMEP faulty and reports an RMEP connectivity fault alarm if the local MEP does not receive CCMs from its RMEP within a period of 3.5 times the interval at which CCMs are sent.
If the default RMEP activation time is used and the local MEP is enabled to receive CCMs from its RMEP, the local MEP immediately receives CCMs from its RMEP.
Prerequisites
An MD and an MA have been configured using the cfm md and ma commands, respectively.
Precautions
The configured RMEP activation time takes effect only on subsequently configured RMEPs in the MA.