Juniper QFX3000-G QFabric, Руководство по развертыванию, Страница: 428 / 652

after a system restart. This also enables the network Node group to resume routing
operations rapidly if there is a restart in the QFabric system (such as a software upgrade).
As a result, we recommend enabling graceful restart for routing protocols in the QFabric
CLI.
NOTE: The QFabric system also uses graceful restart internally within the
fabric to facilitate interfabric resiliency and recovery. This internal feature is
enabled by default with no configuration required.
• Enabling Graceful Restart on page 402
•
Configuring Graceful Restart Options for BGP on page 403
•
Configuring Graceful Restart Options for OSPF and OSPFv3 on page 404
• Tracking Graceful Restart Events on page 405
Enabling Graceful Restart
By default, graceful restart is disabled. To enable graceful restart, include the
graceful-restart
statement at the
[edit routing-instance instance-name routing-options]
or
[edit routing-options]
hierarchy level.
For example:
routing-options {
graceful-restart ;
}
To configure the duration of the graceful restart period, include the
restart-duration
at
the
[edit routing-options graceful-restart]
hierarchy level.
NOTE: Helper mode (the ability to assist a neighboring router attempting a
graceful restart) is enabled by default when you start the routing platform,
even if graceful restart is not enabled. You can disable helper mode on a
per-protocol basis.
[edit]
routing-options {
graceful-restart {
disable;
restart-duration seconds;
}
}
To disable graceful restart globally, include the
disable
statement at the
[edit
routing-options graceful-restart]
hierarchy level.
When graceful restart is enabled for all routing protocols at the [edit routing-options
graceful-restart] hierarchy level, you can disable graceful restart on a per-protocol basis.
Copyright © 2015, Juniper Networks, Inc. 402
QFX3000-G QFabric System Deployment Guide