graceful-restart (Protocols IS-IS)
Syntax
graceful-restart {
disable;
helper-disable;
restart-duration seconds;
}
Description
Configure graceful restart parameters for IS-IS.
Graceful restart allows a routing device to restart with minimal
effects to the network, and is enabled for all routing protocols at
the [edit routing-options] hierarchy level. When graceful
restart is enabled, the restarting routing device is not removed from
the network topology during the restart period. The adjacencies are
reestablished after restart is complete.
On LAN interfaces where IS-IS is configured on a transit router that serves as the designated router (DR), a graceful restart causes:
The ingress router of the label-switched path (LSP), which passes through the DR, to break the LSP.
The ingress router to re-signal the LSP.
Options
disable—Disable graceful restart
for IS-IS.
helper-disable—Disable graceful restart helper
capability. Helper mode is enabled by default.
restart-duration seconds—Time
period for the restart to last, in seconds.
Range: 30 through 300 seconds
Default: 30 seconds
Required Privilege Level
routing—To view this statement in the configuration.
routing-control—To add this statement to the configuration.
Release Information
Statement introduced before Junos OS Release 7.4.