Applicable Environment
To avoid traffic interruption and route flapping caused by the active/standby switchover, you
can enable OSPF GR.
After the OSPF process is restarted 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 ensure the fast convergence of OSPF and
the stability the network topology.
NOTE
In practical applications, you can configure OSPF GR on the dual main control boards to avoid service
forwarding from being affected by the fault occurred on the main control board.
Pre-configuration Tasks
Before configuring OSPF GR, complete the following tasks:
l Configuring IP addresses for interfaces to ensure that neighboring switches are reachable
at the network layer
l Configuring Basic OSPF Functions
Data Preparation
To configure OSPF GR, you need the following data.
No.
Data
1 OSPF process number
2 (Optional) Parameters for establishing GR sessions
NOTE
The default parameter values are recommended.
4.10.2 Enabling OSPF GR
Enabling OSPF GR to ensure the fast convergence of OSPF and the stability the network
topology.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
ospf [ process-id ]
The OSPF view is displayed.
Step 3 Run:
opaque-capability enable
S6700 Series Ethernet Switches
Configuration Guide - IP Routing 4 OSPF Configuration
Issue 01 (2012-03-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
126
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