After OSPFv3 restarts, the GR restarter and the GR helper keep the neighbor relationship,
exchange routing information, synchronize the database, and update the routing table and the
forwarding table. OSPFv3 fast convergence is thus realized.
Pre-configuration Tasks
Before configuring OSPFv3 GR, complete the following task:
l Configuring Basic OSPFv3 Functions
Data Preparation
To configure OSPFv3 GR, you need the following data.
No. Data
1 OSPFv3 process ID
2 Filtering rule of the helper mode of OSPFv3 peers
5.10.2 Enabling OSPFv3 GR
After an OSPFv3 process restarts through GR, the Restarter and the Helper reestablish the
neighbor relationship, exchange routing information, synchronize the LSDB, and update the
routing table and forwarding table. These operations help ensure OSPFv3 fast convergence and
stabilize the network topology.
Context
Do as follows on the switch that runs OSPFv3:
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
ospfv3 process-id
The OSPFv3 view is displayed.
Step 3 Run:
graceful-restart [ period period | ack-time time | retransmit-interval interval |
lsa-checking-ignore | planned-only ]
*
OSPFv3 GR is enabled.
By default, OSPFv3 GR is disabled.
ack-time is optional. After ack-time is specified, the restarter can discover more neighbors in
the time period.
----End
S6700 Series Ethernet Switches
Configuration Guide - IP Routing 5 OSPFv3 Configuration
Issue 01 (2012-03-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
211
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