ipv6 ospf graceful-restart helper-reject
Configure an OSPFv3 interface to not act upon the Grace LSAs that it receives from a restarting OSPFv3 neighbor.
E-Series TeraScale, Z-Series, S4810
Syntax
ipv6 ospf graceful-restart helper-reject
To disable the helper-reject role, enter no ipv6 ospf graceful-restart helper-
reject
.
Defaults The helper-reject role is not configured.
Command Modes INTERFACE
Command History
Version 9.1.(0.0) Introduced on the S4810 and Z9000.
Version 8.4.2.2 Introduced on E-Series TeraScale.
Usage
Information
By default, OSPFv3 graceful restart is disabled and functions only in a helper role to help
restarting neighbor routers in their graceful restarts when it receives a Grace LSA.
When configured in a helper-reject role, an OSPFv3 router ignores the Grace LSAs that it
receives from a restarting OSPFv3 neighbor.
The graceful-restart role command is not supported in OSPFv3. When you enable the helper-
reject role on an interface, you reconfigure an OSPFv3 router to function in a “restarting-only”
role.
ipv6 ospf hello-interval
Specify the time interval between the hello packets sent on the interface.
C-Series, E-Series, Z-Series, S4810
Syntax
ipv6 ospf hello—interval seconds
To return to the default time interval, enter no ipv6 ospf hello—interval.
Parameters
seconds
Enter the time interval in seconds as the time between hello packets.
Range: 1 to 65535 seconds.
Defaults 10 seconds (Ethernet).
Command Modes INTERFACE
Command History
Version 9.1.(0.0) Introduced on the S4810 and Z9000.
Version 7.8.1.0 Added support for the C-Series.
Version 7.4.1.0 Introduced on the E-Series.
Usage
Information
The time interval between hello packets must be the same for routers in a network.
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