No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

CX11x, CX31x, CX710 (Earlier Than V6.03), and CX91x Series Switch Modules V100R001C10 Configuration Guide 12

The documents describe the configuration of various services supported by the CX11x&CX31x&CX91x series switch modules The description covers configuration examples and function configurations.
Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Configuring Multi-Hop BFD

Configuring Multi-Hop BFD

Multi-hop BFD fast detects faults on the indirectly connected link.

Pre-configuration Tasks

Before configuring multi-hop BFD, complete the following task:

  • Configuring a routing protocol to ensure reachability at the network layer

Configuration Process

Figure 11-17 Multi-hop BFD configuration process

Procedure

  1. Run:

    system-view

    The system view is displayed.

  2. Run:

    bfd

    BFD is enabled globally and the BFD view is displayed.

    By default, BFD is disabled globally.

  3. Run:

    quit

    Return to the system view.

  4. According to whether BFD detects an IPv4 or IPv6 link, perform either of the following operations:

    • Run:

      bfd session-name bind peer-ip ip-address [ vpn-instance vpn-name ] [ source-ip ip-address ]

      The binding information about a BFD for IPv4 session is created.

      By default, BFD binding is not created.

      NOTE:
      • If a BFD session for IPv4 is created for the first time, a peer IPv4 address must be specified for the BFD session, and the BFD session must be bound to the local interface. The binding cannot be modified after being created.
      • When a BFD session for IPv4 is created, the system checks only the validity of the IPv4 address format. Binding the BFD session for IPv4 to an incorrect remote or local IPv4 address results in a failure in establishing the BFD session for IPv4.
      • If BFD and unicast reverse path forwarding (URPF) are used together, source-ip must be configured correctly before a BFD session is bound to the interface to prevent BFD packets from being discarded. URPF checks the format of the source IPv4 addresses in received packets and discards the packets whose source IPv4 addresses are incorrect.
    • Run:

      bfd session-name bind peer-ipv6 ipv6-address [ vpn-instance vpn-name ] [ source-ipv6 ipv6-address ]

      The binding information about a BFD for IPv6 session is created.

      By default, BFD binding is not created.

      NOTE:
      • If a multi-hop BFD session for IPv6 is created for the first time, a peer IPv6 address must be specified for the BFD session, and the BFD session must be bound to the local interface. The binding cannot be modified after being created.
      • When a BFD session for IPv6 is created, the system checks only the validity of the IPv6 address format. Binding the BFD session for IPv6 to an incorrect remote or local IPv6 address results in a failure in establishing the BFD session for IPv6.
      • If BFD and URPF are used together, source-ipv6 must be configured correctly before a BFD session is bound to the IPv6 address to prevent BFD packets from being discarded. URPF checks the format of the source IPv6 addresses in received packets and discards the packets whose source IPv6 addresses are incorrect. the packets whose source IPv6 addresses are incorrect.

  5. Run:

    discriminator local discr-value

    The local discriminator is set.

  6. Run:

    discriminator remote discr-value

    The remote discriminator is set.

    NOTE:

    The local discriminator of the local system must be the same as the remote discriminator of the remote system; the remote discriminator of the local system must be the same as the local discriminator of the remote system. Otherwise, BFD sessions cannot be established.

  7. Run:

    commit

    The configuration is committed.

Translation
Download
Updated: 2019-08-09

Document ID: EDOC1000041694

Views: 59577

Downloads: 3623

Average rating:
This Document Applies to these Products
Related Version
Related Documents
Share
Previous Next