Configuring OSPFv3 NSR

Nonstop routing (NSR) backs up OSPFv3 link state information from the active process to the standby process. After an active/standby switchover, NSR can complete link state recovery and route regeneration without tearing down adjacencies or impacting forwarding services.

NSR does not require the cooperation of neighboring devices to recover routing information, and it is typically used more often than GR.

IMPORTANT:

A device that has OSPFv3 NSR enabled cannot act as GR restarter.

To enable OSPFv3 NSR:

Step	Command	Remarks
1. Enter system view.	system-view	N/A
2. Enter OSPFv3 view.	ospfv3 [ process-id \| vpn-instance vpn-instance-name ] *	N/A
3. Enable OSPFv3 NSR.	non-stop-routing	By default, OSPFv3 NSR is disabled. This command takes effect only for the current process. As a best practice, enable OSPFv3 NSR for each process if multiple OSPFv3 processes exist.

Step

Command

Remarks

1. Enter system view.

system-view

N/A

2. Enter OSPFv3 view.

ospfv3 [ process-id | vpn-instance vpn-instance-name ] *

N/A

3. Enable OSPFv3 NSR.

non-stop-routing

By default, OSPFv3 NSR is disabled.

This command takes effect only for the current process. As a best practice, enable OSPFv3 NSR for each process if multiple OSPFv3 processes exist.

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