Users Guide

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.
C9000 Series
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. The range is
from 1 to 65525 seconds.
Defaults 10 seconds (Ethernet).
Command Modes INTERFACE
Command
History
This guide is platform-specific. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.9(0.0) Introduced on the C9010.
9.2(1.0) Introduced on the Z9500.
9.1.(0.0) Introduced on the S4810 and Z9000.
7.8.1.0 Added support for the C-Series.
7.4.1.0 Introduced on the E-Series.
8.3.19.0 Introduced on the S4820T.
Usage
Information
The time interval between hello packets must be the same for routers in a network.
Related
Commands
ipv6 ospf dead-interval – specifies the time interval between hello packets was received from a router.
ipv6 ospf priority
To determine the Designated Router for the OSPFv3 network, set the priority of the interface.
C9000 Series
Syntax
ipv6 ospf priority number
To return to the default time interval, use the no ipv6 ospf priority command.
Parameters
number
Enter the number as the priority. The range is from 1 to 255.
1184 Open Shortest Path First (OSPFv2 and OSPFv3)