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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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(Optional) Configuring GR Session Parameters on the Helper

(Optional) Configuring GR Session Parameters on the Helper


  1. Run system-view

    The system view is displayed.

  2. Run ospf [process-id]

    The OSPF view is displayed.

  3. Run graceful-restart helper-role { [ { ip-prefix ip-prefix-name | acl-number acl-number | acl-name acl-name } | ignore-external-lsa | planned-only ] * | never }

    GR session parameters are configured on the Helper.

    • If ACL parameters are configured, the local router can enter the Helper mode only after neighbors pass the filtering policies of ip-prefix or acl.
    • If ignore-external-lsa is configured, the Helper does not check the LSAs outside the AS (AS-external LSA). By default, the Helper checks the LSAs outside the AS.
    • If planned-only is configured, the Helper supports only planned GR. By default, the Helper supports both planned GR and unplanned GR.
    • If never is configured, the router will not enter the Helper mode.

Updated: 2019-12-27

Document ID: EDOC1000174069

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