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Configuration Guide - IP Unicast Routing

S7700 and S9700 V200R011C10

This document describes IP Unicast Routing configurations supported by the switch, including the principle and configuration procedures of IP Routing Overview, Static Route, RIP, RIPng, OSPF, OSPFv3, IS-IS(IPv4), IS-IS(IPv6), BGP, Routing Policy ,and PBR, and provides configuration examples.

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Configuring OSPF GR

Configuring OSPF GR

Applicable Environment

To avoid traffic interruption and route flapping caused by master/slave switchovers, configure OSPF GR.

After an OSPF process is restarted through GR, the Restarter and the Helper reestablish a neighbor relationship, exchange routing information, synchronize their LSDBs, and update their routing tables and forwarding tables. These operations ensure fast OSPF convergence and network topology stability.

Where possible, to prevent service forwarding from being affected by faults on a main control board, configure OSPF GR when dual main control boards are deployed.

Pre-configuration Tasks

Before configuring OSPF GR, complete the following tasks:

Updated: 2020-02-04

Document ID: EDOC1000178324

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