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CLI-based Configuration Guide - IP Unicast Routing

AR100, AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 V200R010

This document describes the concepts and configuration procedures of IP Service features on the device, and provides the configuration examples.
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Setting the Link Cost for an OSPF Interface

Setting the Link Cost for an OSPF Interface


OSPF can automatically calculate the link cost for an interface according to the interface bandwidth. You can also set the link cost for the interface using commands.

If you do not set the cost of an OSPF interface using the ospf cost cost command, OSPF automatically calculates the cost of the interface according to the interface bandwidth. The calculation formula is as follows: Cost of the interface = Bandwidth reference value/Interface bandwidth. The integer of the calculated result is the cost of the interface. If the calculated result is smaller than 1, the cost value is 1. Changing the bandwidth reference value can change the cost of an interface.


  • Setting the link cost for an OSPF interface
    1. Run system-view

      The system view is displayed.

    2. Run interface interface-type interface-number

      The OSPF interface view is displayed.

    3. Run ospf cost cost

      The cost of the OSPF interface is set.

  • Setting the bandwidth reference value
    1. Run system-view

      The system view is displayed.

    2. Run ospf [ process-id ]

      The OSPF process view is displayed.

    3. Run bandwidth-reference value

      The bandwidth reference value is set.

      The parameter value specifies the bandwidth reference value used to calculate the link cost, in Mbit/s.


      Ensure that the bandwidth reference values of routers in an OSPF process are the same.

Updated: 2019-05-20

Document ID: EDOC1100034072

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