3-9
Table 3-1
Relationship of the interval field value, the interval between CCM messages and the timeout
time of the remote MEP
The interval field value
The interval between CCM
messages
The timeout time of the remote
MEP
4
1 second
3.5 seconds
5
10 second
35 seconds
6
60 seconds
210 seconds
7
600 seconds
2100 seconds
On different devices, the MEPs belonging to the same MD and MA should be configured with the
same time interval for CCMs sending.
Configuring LB on MEPs
The LB function can verify the link state between two ends after CC detects a link fault.
Configuration Prerequisites
Before configuring this function, you should first complete the MEP and MIP configuration tasks.
Configuration Procedure
Follow these steps to configure LB on MEP:
To do...
Use the command...
Remarks
Enter system view
system-view
—
Enable LB
cfd loopback service-instance instance-id mep mep-id
{
target-mep target-mep-id
|
target-mac mac-address
}
[
number loopback-number
]
Required
Disabled by default
Configuring LT on MEPs
LT can trace the path between the specified MEP and the target MEP, and can also locate link faults by
sending LT messages automatically. The two functions are implemented in the following way:
z
To implement the first function, the specified MEP first sends LTM messages to the target MEP.
Based on the LTR messages in response to the LTM messages, the path between the two MEPs
can be identified.
