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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 Stub Areas

Configuring OSPF Stub Areas

Applicable Environment

Partitioning an AS into different areas reduces the number of LSAs. To further reduce the number of entries in routing tables and the number of LSAs to be transmitted in a non-backbone area, configure the non-backbone area on the border of the AS as a stub area.

Configuring a stub area is optional.

Note the following points when configuring a stub area:

  • The backbone area (Area 0) cannot be configured as a stub area.
  • If an area is to be configured as a stub area, all the switches in this area must be configured with stub attributes using the stub command.
  • An ASBR cannot exist in a stub area to import AS external routes.
  • Virtual links cannot exist in stub areas.

Pre-configuration Tasks

Before configuring OSPF stub areas, complete the following tasks:

Configuration Procedure

Figure 5-67  Flowchart of configuring OSPF stub areas
Updated: 2020-02-04

Document ID: EDOC1000178324

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