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CLI-based Configuration Guide - IP Unicast Routing

AR100, AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 V200R009

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Configuring OSPF GR

Configuring OSPF GR

Configuring OSPF GR to avoid traffic interruption and route flapping caused by the active/standby switchover.

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 of the network topology.

NOTE:
In practical application, in order to realize that business forwarding is not affected by motherboard failure, it is usually possible to configure BGP GR in the hardware environment of dual motherboard to make sense.

All the models support the GR Helper, and only AR3200 series support the GR Restarter.

Pre-configuration Tasks

Before configuring OSPF GR, complete the following tasks:

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Updated: 2019-05-17

Document ID: EDOC1000174069

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