Administrator Guide

Layer 3 Routing Commands 1700
Syntax
nsf [ietf] restart-interval seconds
no nsf [ietf] restart-interval
• ietf — This keyword is used to distinguish the IETF standard
implementation of graceful restart from other implementations. Since the
IETF implementation is the only one supported, this keyword is optional.
• seconds — The number of seconds that the restarting router asks its
neighbors to wait before exiting helper mode. The restarting router
includes the restart interval in its grace LSAs (range 1–1800 seconds).
Default Configuration
The default restart interval is 120 seconds.
Command Mode
Router OSPF
User Guidelines
The grace period must be set long enough to allow the restarting router to
reestablish all of its adjacencies and complete a full database exchange with
each of those neighbors.
Example
console(config-router)#nsf restart-interval 180
passive-interface default
The passive-interface default command enables the global passive mode by
default for all interfaces. It overrides any interface level passive mode. Use the
“no” form of this command to disable the global passive mode by default for
all interfaces. Any interface previously configured to be passive reverts to non-
passive mode.
Syntax
passive-interface default
no passive-interface default