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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 to Filter the Received Routes

Configuring OSPF to Filter the Received Routes

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run ospf [ process-id ]

    The OSPF process view is displayed.

  3. Run filter-policy { acl-number | acl-name acl-name | ip-prefix ip-prefix-name | route-policy route-policy-name [ secondary ] } import

    OSPF is configured to filter the received routes.

    • The parameter acl-number specifies the number of a basic ACL.
    • The parameter acl-name acl-name specifies the name of an ACL.
    • The parameter ip-prefix ip-prefix-name specifies the name of an IP prefix list.

    OSPF is a link-state dynamic routing protocol, with routing information carried in the LSA. Therefore, the filter-policy import command cannot be used to filter the advertised or received LSAs.

    The filter-policy import command is used to filter the routes calculated by OSPF. Only the routes that pass the filtering criteria are added to the routing table. Routes that do not pass the filtering criteria cannot be added to the OSPF routing table but can be advertised.

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Updated: 2019-05-17

Document ID: EDOC1000174069

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