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Usage
Information
Before you enable IPsec encryption on an OSPFv3 interface, first enable IPv6 unicast routing globally,
configure an IPv6 address and enable OSPFv3 on the interface, and assign the interface to an area.
An SPI value must be unique to one IPsec security policy (authentication or encryption) on the router.
Configure the same encryption policy (same SPI and key) on each OSPFv3 interface in a link.
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.
Syntax
ipv6 ospf graceful-restart helper-reject
To disable the helper-reject role, use the no ipv6 ospf graceful-restart helper-reject
command.
Defaults The helper-reject role is not configured.
Command Modes INTERFACE
Supported Modes Full–Switch
Command
History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.2(0.0) Introduced on the MXL 10/40GbE Switch IO Module.
Usage Command
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.
Syntax
ipv6 ospf hello—interval seconds
Parameters
seconds
Enter the time interval in seconds as the time between hello packets. The range is
from 1 to 65525 seconds.
Defaults 10 seconds (Ethernet).
Command Modes INTERFACE
Supported Modes Full–Switch
Command
History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.2(0.0) Introduced on the MXL 10/40GbE Switch IO Module.
Usage
Information
The time interval between hello packets must be the same for routers in a network.
Open Shortest Path First (OSPFv2 and OSPFv3) 873