Dell Force10 C150 Configuration Manual page 718

helper-reject neighbors
•
configured router.
mode
•
role
• —the role or roles the configured router can perform.
Note: By default, OSPFv2 graceful restart is disabled.
You enable OSPFv2 graceful restart in CONFIGURATION ROUTER OSPF mode.
Command Syntax
graceful-restart
grace-period seconds
graceful-restart
helper-reject router-id
graceful-restart mode
[planned-only |
unplanned-only]
graceful-restart role
[helper-only | restart-only]
When you configure a graceful restart on an OSPFv2 router, the
displays information similar to the following.
718 | Open Shortest Path First (OSPFv2 and OSPFv3)
—the router ID of each restart router that does not receive assistance from the
—the situation or situations that trigger a graceful restart.
Command Mode
CONFIG-ROUTER-
OSPF-id
This is the period of time that an OSPFv2 router's neighbors will advertise it as fully
adjacent, regardless of the synchronization state, during a graceful restart.
OSPFv2 terminates this process when the grace period ends.
CONFIG-ROUTER-
OSPF-id
CONFIG-ROUTER-
OSPF-id
By default, OSPFv2 supports both planned and unplanned restarts. Selecting one or the
other mode restricts OSPFv2 to the single selected mode.
CONFIG-ROUTER-
OSPF-id
By default, OSPFv2 supports both restarting and helper roles. Selecting one or the other role
restricts OSPFv2 to the single selected role.
Usage
Enable OSPFv2 graceful-restart globally and set the grace period.
Seconds range: between 40 and 3000
Enter the Router ID of the OSPFv2 helper router from which the
router does not accept graceful restart assistance.
This applies to the specified router only.
IP Address: A.B.C.D
Specify the operating mode in which graceful-restart functions.
FTOS supports the following options:
• Planned-only. The OSPFv2 router supports graceful-restart for
planned restarts only. A planned restart is when the user
manually enters a fail-over command to force the primary
RPM over to the secondary RPM. During a planned restart,
OSPF sends out a Grace LSA before the system switches over
to the secondary RPM. OSPF also is notified that a planned
restart is happening.
• Unplanned-only. The OSPFv2 router supports graceful-restart
for only unplanned restarts. During an unplanned restart, OSPF
sends out a Grace LSA once the secondary RPM comes online.
Configure the graceful restart role or roles that this OSPFv2 router
performs. FTOS supports the following options:
• Helper-only. The OSPFv2 router supports graceful-restart only
as a helper router.
• Restart-only. The OSPFv2 router supports graceful-restart only
during unplanned restarts.
show run ospf
command (Figure 32-17)