Brocade Multi-Service IronWare Routing Configuration Guide (Supporting R05.6.00) - Manual (Page 238)

210 Multi-Service IronWare Routing Configuration Guide
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Adding additional parameters
• Configuring OSPF Graceful Restart for the Global Instance – In this configuration all OSPF
neighbors other than those used by VRFs are made subject to the Graceful Restart capability.
The restart timer set globally does not apply to Graceful Restart on a configured VRF.
• Configuring OSPF Graceful Restart per VRF – In this configuration all OSPF neighbors for the
specified VRF are made subject to the Graceful Restart capability. The restart timer set for a
specific VRF only applies to that VRF.
Configuring OSPF Graceful Restart for the global instance
OSPF Graceful restart can be configured for the global instance or for a specified Virtual Routing
and Forwarding (VRF) instance. Configuring OSPF Graceful restart for the global instance does not
configure it for any VRFs. The following sections describe how to enable the OSPF graceful restart
feature for the global instance on a device.
Use the following command to enable the graceful restart feature for the global instance on a
device.
Brocade(config)# router ospf
Brocade(config-ospf-router)# graceful-restart
Syntax: [no] graceful-restart
Configuring OSPF Graceful Restart time for the global instance
Use the following command to specify the maximum amount of time advertised to a neighbor
router to maintain routes from and forward traffic to a restarting router.
Brocade(config) router ospf
Brocade(config-ospf-router)# graceful-restart restart-time 120
Syntax: [no] graceful-restart restart-time seconds
The seconds variable sets the maximum restart wait time advertised to neighbors.
Possible values are 10 - 1800 seconds.
The default value is 120 seconds.
Disabling OSPF Graceful Restart helper mode for the global instance
By default, a router supports other restarting routers as a helper. You can prevent your router from
participating in OSPF Graceful Restart by using the following command.
Brocade(config) router ospf
Brocade(config-ospf-router)# graceful-restart helper-disable
Syntax: [no] graceful-restart helper-disable
This command disables OSPF Graceful Restart helper mode.
The default behavior is to help the restarting neighbors.
Configuring OSPF Graceful Restart per VRF
The following sections describe how to enable the OSPF Graceful Restart feature on a specified
VRF.
Use the following command to enable the graceful restart feature on a specified VRF.