Configuring Ospfv3 Gr; Configuring Gr Restarter - HP FlexFabric 12900E Series Configuration Manual

Step
4. Specify an authentication
mode for the area.
Configuring OSPFv3 interface authentication
Step
1. Enter system view.
2. Enter interface view.
3. Specify an authentication
mode for the interface.

Configuring OSPFv3 GR

GR ensures forwarding continuity when a routing protocol restarts or an active/standby switchover
occurs.
Two routers are required to complete a GR process. The following are router roles in a GR process:
•
GR restarter—Graceful restarting router. It must be Graceful Restart capable.
•
GR helper—The neighbor of the GR restarter. It helps the GR restarter to complete the GR
process.
To prevent service interruption after a master/backup switchover, a GR restarter running OSPFv3
must perform the following tasks:
•
Keep the GR restarter forwarding entries stable during reboot.
•
Establish all adjacencies and obtain complete topology information after reboot.
After the active/standby switchover, the GR restarter sends a Grace LSA to tell its neighbors that it
performs a GR. Upon receiving the Grace LSA, the neighbors with the GR helper capability enter the
helper mode (and are called GR helpers). Then, the GR restarter retrieves its adjacencies and LSDB
with the help of the GR helpers.

Configuring GR restarter

You can configure the GR restarter capability on a GR restarter.
IMPORTANT:
You cannot enable OSPFv3 NSR on a device that acts as GR restarter.
To configure GR restarter:
Step
1. Enter system view.
Command
authentication-mode
keychain-name
Command
system-view
interface
interface-number
ospfv3 authentication-mode
keychain keychain-name [ instance
instance-id ]
Command
system-view
416
Remarks
By default, no authentication is
performed for the area.
keychain
For more information about
keychains,
Configuration Guide.
Remarks
N/A
interface-type
N/A
By default, no authentication is
performed for the interface.
For more information about
keychains,
Configuration Guide.
Remarks
N/A
see Security
see Security