graceful-restart suppress-sa

Use graceful-restart suppress-sa to disable setting the SA bit in hello messages sent when the FDB is not usable during a restart.

Use undo graceful-restart suppress-sa to enable setting the SA bit during a restart.

Syntax

graceful-restart suppress-sa

undo graceful-restart suppress-sa

Default

The SA bit is set during a restart.

Views

SPBM view

Predefined user roles

network-admin

Usage guidelines

Setting the SA bit prevents the neighbor from advertising the ISIS-SPB adjacency with the GR restarter. This command prevents route blackholes by temporarily excluding the restarter from the SPF computation on other SPBM nodes.

If the SA bit is not set, the ISIS-SPB neighbors advertise the adjacency with the device while the device is restarting.

Examples

# Disable setting the SA bit during a GR process.

<Sysname> system-view
[Sysname] spbm
[Sysname-spbm] graceful-restart suppress-sa