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Common Operation Guide

CloudEngine 12800, 12800E, 8800, 7800, 6800, and 5800 Series Switches

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Configuring Route Summarization

Configuring Route Summarization

A large number of routing entries in an OSPF routing table greatly slow down route searches. You can configure route summarization to reduce the size of the OSPF routing table and simplify management.

  • Configure route summarization on an ABR.

    <HUAWEI> system-view
    [~HUAWEI] ospf 100
    [*HUAWEI-ospf-100] area 1
    [*HUAWEI-ospf-100-area-0.0.0.1] abr-summary 10.42.0.0 255.255.0.0   //Summarize routes with the same IP prefix in area 1 into one route and advertise the summarized route.
    [*HUAWEI-ospf-100-area-0.0.0.1] commit
  • Configure route summarization on an ASBR.

    <HUAWEI> system-view
    [~HUAWEI] ospf 100
    [*HUAWEI-ospf-100] asbr-summary 10.2.0.0 255.255.0.0 not-advertise tag 2 cost 100  //Summarize the imported routes with the same IP prefix into one route, set the tag to 2 and the cost to 100 for the summarized route, and do not advertise the summarized route.
    [*HUAWEI-ospf-100] commit
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Updated: 2018-10-08

Document ID: EDOC1000102369

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