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Configuration Guide - IP Routing 01

NE05E and NE08E V300R003C10SPC500

This is NE05E and NE08E V300R003C10SPC500 Configuration Guide - IP Routing
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Configuring the OSPFv3 GR Helper

Configuring the OSPFv3 GR Helper

To avoid traffic interruption and route flapping caused by the active/standby switchover, you can enable OSPFv3 GR.


GR ensures normal traffic forwarding and non-stop forwarding of key services during the restart of routing protocols. GR is one of high availability (HA) technologies. HA technologies comprise a set of comprehensive techniques, such as fault-tolerant redundancy, link protection, faulty node recovery, and traffic engineering. As a fault-tolerant redundancy technology, GR is widely used to ensure non-stop forwarding of key services during master/slave main control board switchover and system upgrade.


The NE supports only the GR Helper.

Pre-configuration Tasks

Before configuring OSPFv3 GR, complete the following tasks:

  • Configure a link layer protocol.

  • Configure IP addresses for interfaces to ensure that neighboring nodes are reachable at the network layer.

  • Configure basic OSPFv3 functions.


  1. Run system-view

    The system view is displayed.

  2. Run ospfv3 process-id

    The OSPFv3 view is displayed.

  3. Configure a basic ACL:

    1. Run helper-role [ { ip-prefix ip-prefix-name | acl-number acl-number | acl-name acl-name } | max-grace-period period | planned-only | lsa-checking-ignore ] *

      OSPFv3 GR is enabled.

    2. Run quit

      Return to the system view.

    3. Run acl ipv6 { name basic-acl6-name { basic | [ basic ] number basic-acl6-number } | [ number ] basic-acl6-number } [ match-order { config | auto } ]

      The basic ACL view is displayed.

    4. Run rule [ rule-id ] [ name rule-name ] { deny | permit } [ fragment | source { source-ipv6-address { prefix-length | source-wildcard } | source-ipv6-address/prefix-length | any } | time-range time-name | [ vpn-instance vpn-instance-name | vpn-instance-any ] ] *

      A rule is configured for the basic ACL.

      When the rule command is run to configure rules for a named ACL, only the source address range specified by source and the time period specified by time-range are valid as the rules.

  4. Run commit

    The configuration is committed.

Checking the Configurations

Run the following command to check the preceding configuration:

  • Run the display ospfv3 [ process-id ] graceful-restart-information command to view the OSPFv3 GR Helper status.

<HUAWEI> display ospfv3 1 graceful-restart-information
            OSPFv3 Router with ID ( (Process 1)

  Helper capability                : enabled
  Helper support                   : planned and un-planned, strict lsa check
  Max Grace-Period Configured      : 1800 Sec
  Last Helper-exit Reason          : none
Updated: 2019-01-14

Document ID: EDOC1100058916

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