Users Guide

authentication policy congured for the OSPFv3 area, enter the no ipv6 ospf no ipv6 ospf
encryption null command.
Related Commands
area encryption – congures an IPsec encryption policy for an OSPFv3 area.
show crypto ipsec policy – displays the conguration of IPsec encryption policies.
show crypto ipsec sa ipv6 – displays the security associations set up for OSPFv3 interfaces in encryption
policies.
ipv6 ospf graceful-restart helper-reject
Congure an OSPFv3 interface to not act upon the Grace LSAs that it receives from a restarting OSPFv3 neighbor.
S4820T
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 congured.
Command Modes INTERFACE
Command History
This guide is platform-specic. 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
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.2(1.0) Introduced on the Z9500.
9.1.(0.0) Introduced on the S4810 and Z9000.
8.4.2.2 Introduced on E-Series TeraScale.
8.3.19.0 Introduced on the S4820T.
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 congured 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 recongure an OSPFv3 router to function in a “restarting-only” role.
1212
Open Shortest Path First (OSPFv2 and OSPFv3)