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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 the Interface Authentication Mode

Configuring the Interface Authentication Mode


The interface authentication mode is used among neighbor routers to set the authentication mode and password. Its priority is higher than that of the area authentication mode.

If plain is selected during the configuration of the interface authentication mode, the password is saved in the configuration file in plain text. This saving mode brings security risks. It is recommended that you select cipher to save the password in cipher text.

Simple, MD5 authentication, and HMAC-MD5 cipher text authentication have potential security risks. HMAC-SHA256 cipher text authentication is recommended.


  1. Run system-view

    The system view is displayed.

  2. Run interface interface-type interface-number

    The OSPF interface view is displayed.

  3. Run any of the following commands to configure the interface authentication mode as required:

    • Run ospf authentication-mode simple [ plain plain-text | [ cipher ] cipher-text ]

      Simple authentication is configured for the OSPF interface.

      • simple indicates simple authentication.
      • plain indicates the plain text password. For simple authentication, the authentication mode is in plain text by default.
      • cipher indicates the cipher text password. For MD5 or HMAC-MD5 authentication, the authentication mode is in cipher text by default.
    • Run ospf authentication-mode { md5 | hmac-md5 | hmac-sha256 } [ key-id { plain plain-text | [ cipher ] cipher-text } ]

      The specified authentication mode is configured for the OSPF interface.

      • md5 indicates the MD5 cipher text authentication mode.

      • hmac-md5 indicates the HMAC-MD5 cipher text authentication mode.
      • hmac-sha256 indicates the HMAC-SHA256 cipher text authentication mode.
    • Run ospf authentication-mode null

      The OSPF interface is not authenticated.

    • Run ospf authentication-mode keychain keychain-name

      Keychain authentication is configured for the OSPF area.


      Before using Keychain authentication, you need to configure Keychain information in the system view. To establish the OSPF neighbor relationship, you need to ensure that the key-id, algorithm, and key-string of the local ActiveSendKey are the same as those of the remote ActiveRecvKey.

Updated: 2019-05-17

Document ID: EDOC1000174069

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