Juniper EX9200 Features Manual page 133

Overview
Configuration
Copyright © 2017, Juniper Networks, Inc.
Junos OS Release 11.4 extends OSPF graceful restart support to include restart
signaling-based helper mode. Both standard (RFC 3623-based) and restart
signaling-based helper modes are enabled by default, irrespective of the graceful-restart
configuration status on the routing device.
Junos OS, however, enables you to choose between the helper modes with the
helper-disable <standard | restart-signaling | both>
Both standard and restart signaling-based helper modes are enabled by default,
irrespective of the graceful-restart configuration status on the routing device. Junos OS
allows you to disable or enable the helper modes based on your requirements.
To configure the helper mode options for graceful restart:
To enable graceful restart, add the
1.
hierarchy level.
routing-options]
[edit routing-options]
user@host# set graceful-restart
The helper modes, both standard and restart signaling-based, are enabled by default.
To disable one or both of the helper modes, add the
2.
restart-signaling | standard>
hierarchy level.
To disable both standard and restart signaling-based helper modes:
[edit protocols ospf graceful-restart]
user@host# set helper-disable both
To disable only the restart signaling-based helper mode:
[edit protocols ospf graceful-restart]
user@host# set helper-disable restart-signaling
To disable only the standard helper mode:
[edit protocols ospf graceful-restart]
user@host# set helper-disable standard
NOTE: You must commit the configuration before the change takes effect.
The last committed statement always takes precedence over the previous
one.
To enable one or both of the helper modes when the helper modes are disabled, delete
3.
the helper-disable <both | restart-signaling | standard>
protocols ospf graceful-restart]
Chapter 12: Configuring Graceful Restart
statement.
statement at the
graceful-restart
helper-disable <both |
statement at the [edit protocols ospf graceful-restart]
hierarchy level.
[edit
statement from the [edit
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