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nsf interface wait
nsf t1
nsf t2
Copyright © 2010, Juniper Networks, Inc.
Use to enable the IS-IS graceful restart mechanism on the router.
Graceful restart, which is also known as nonstop forwarding (NSF), allows an IS-IS
router to restart with minimal routing disruption to the network.
Example
host1(config-router)#nsf ietf
Use the no version to restore the default state for IS-IS graceful restart on the router,
disabled.
See nsf ietf
Use to specify the maximum amount of time, in seconds, that an IS-IS process on a
restarting router waits for all interfaces with IS-IS adjacencies to come up before
completing the restart process.
You can specify a value in the range 5–120 seconds.
Example
host1(config-router)#nsf interface wait 45
Use the no version to restore the default maximum wait time, 10 seconds.
See nsf interface wait
Use to specify either the interval between IS-IS restart requests sent by the router or
the number of times that the router resends unacknowledged restart requests.
Use the interval keyword to specify the number of seconds, in the range 5–120, between
restart requests sent by the router on a particular IS-IS interface to neighboring IS-IS
routers in the network.
Use the retry-times keyword to specify the number of times, in the range 1–3, that the
router tries to resend unacknowledged restart requests.
The restarting router stops sending restart requests after it receives an acknowledgment.
Example 1
host1(config-router)#nsf t1 interval 90
Example 2
host1(config-router)#nsf t1 retry-times 2
Use the no version to restore the default time interval, 5 seconds, or the default number
of retry attempts, 1.
See nsf t1
Chapter 6: Configuring IS-IS
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