hello lost

Use hello lost to set the maximum number of consecutive lost or erroneous hellos.

Use undo hello lost to restore the default.

Syntax

hello lost times

undo hello lost

Default

The maximum number of consecutive lost or erroneous hellos is 4.

Views

RSVP view

Predefined user roles

network-admin

Parameters

times: Specifies the maximum number of consecutive lost or erroneous hellos, in the range of 3 to 10.

Usage guidelines

When a device sends a hello to a neighbor but the device does not receive any replies within an interval, the hello is lost. The device determines that the neighbor fails when the number of consecutive lost hellos or erroneous hellos from the neighbor reaches the maximum (configured by this command).

If RSVP GR is enabled, the local device acts as a GR helper to help the neighbor to perform GR. If RSVP GR is disabled but FRR is enabled on the local device, it performs an FRR.

This command takes effect only after the RSVP hello extension feature has been enabled by using the rsvp hello enable command.

If the maximum number is too big, neighbor failures cannot be promptly detected. If the maximum number is too small, an operating neighbor might be regarded failed.

Examples

# Set the maximum number of consecutive lost or erroneous hellos to 6.

<Sysname> system-view
[Sysname] rsvp
[Sysname-rsvp] hello lost 6

Related commands

hello interval

rsvp hello enable