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graceful-restart (Protocols OSPF)
Supported Platforms ACX Series , EX Series , M Series , MX Series , PTX Series , QFabric System , QFX Series standalone
switches , SRX210, SRX3400 , T1600, T640
Syntax graceful-restart {
disable;
helper-disable (standard | restart-signaling | both);
no-strict-lsa-checking;
notify-duration seconds;
restart-duration seconds;
}
Hierarchy Level [edit logical-systems logical-system-name protocols (ospf | ospf3)],
[edit logical-systems logical-system-name routing-instances routing-instance-name protocols
(ospf | ospf3)],
[edit protocols (ospf | ospf3)],
[edit routing-instances routing-instance-name protocols ospf]
Release Information Statement introduced before Junos OS Release 7.4.
Support for the
no-strict-lsa-checking
statement introduced in Junos OS Release 8.5.
Statement introduced in Junos OS Release 9.0 for EX Series switches.
Support for the helper mode
standard
,
restart-signaling
, and
both
options introduced in
Junos OS Release 11.4.
Statement introduced in Junos OS Release 12.1 for the QFX Series.
Description Configure graceful restart for OSPF.
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.
Options disable —Disable graceful restart for OSPF.
helper-disable (standard | restart-signaling| both)
—Disable helper mode for graceful
restart. When helper mode is disabled, a device cannot help a neighboring device
that is attempting to restart. Beginning with Junos OS Release 11.4, you can configure
restart signaling-based helper mode for OSPFv2 graceful restart configurations. The
standard , restart-signaling , and both options are only supported for OSPFv2. Specify
standard to disable helper mode for standard graceful restart (based on RFC 3623).
Specify restart-signaling to disable helper mode for restart signaling-based graceful
restart (based on RFC 4811, RFC 4812, and RFC 4813). Specify both to disable helper
mode for both standard and restart signaling-based graceful restart. The last
committed statement takes precedence over the previously configured statement.
Default: Helper mode is enabled by default. For OSPFv2, both standard and
restart-signaling based helper modes are enabled by default.
no-strict-lsa-checking
—Disable strict OSPF link-state advertisement (LSA) checking to
prevent the termination of graceful restart by a helping router. LSA checking is enabled
by default.
427 Copyright © 2015, Juniper Networks, Inc.
Chapter 19: Configuration Statements