cfd linktrace auto-detection

Use cfd linktrace auto-detection to enable the auto sending of linktrace messages.

Use undo cfd linktrace auto-detection to disable this feature.

Syntax

cfd linktrace auto-detection [ size size-value ]

undo cfd linktrace auto-detection

Default

This feature is disabled.

Views

System view

Predefined user roles

network-admin

Parameters

size size-value: Specifies the size of the buffer used to store the auto-detection result, in the range of 1 to 100 (in terms of sending times).

This value defaults to 5, which means the buffer stores the results of the recent five auto-detections.

Usage guidelines

After LT messages automatic sending is enabled, if the source MEP fails to receive the CCMs from the target MEP within 3.5 times the sending interval, the link between the two is regarded as faulty and LTMs will be sent out. (The destination of the LTMs is the target MEP, and the TTL field value is 255.) Based on the LTRs that echo back, the fault source can be located.

Once you disable LT message automatic sending, the content stored in the buffer will be removed.

Examples

# Enable automatic LT messages sending, and set the size of the buffer used to store the auto-detection result to 100 (in terms of sending times).

<Sysname> system-view
[Sysname] cfd linktrace auto-detection size 100

Related commands

• cfd linktrace

• display cfd linktrace-reply auto-detection