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Configuration Guide - Reliability

S7700 and S9700 V200R011C10

This document describes the configuration of BFD, DLDP, VRRP, SmartLink, CFM, EFM, Y.1731 and MAC swap loopback to ensure reliability on the device.
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Configuring Association Between EFM and BFD

Configuring Association Between EFM and BFD

Context

For details on the principle and usage scenarios of association between EFM and BFD, see Fault Information Advertisement Between EFM and Other Modules.

Association between EFM and BFD is bidirectional:
  • When EFM detects a link fault, it will notify BFD of the fault.

  • When BFD detects a link fault, it will notify EFM of the fault.

The following types of BFD sessions can be used:
  • Static BFD for LSP (LDP, TE, TE LSP, static LSP, and VLL PW) sessions (a PST is required)

  • BFD for IP sessions (no PST is required)

Pre-configuration Tasks

Before configuring association between EFM and BFD, complete the following tasks:

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run oam-mgr

    The OAM management view is displayed.

  3. Run the following commands as required.

    • Unidirectional association

      Run the oam-bind ingress efm interface interface-type interface-number egress bfd-session bfd-session-id command to configure EFM to notify BFD of faults.

      Run the oam-bind ingress bfd-session bfd-session-id egress efm interface interface-type interface-number command to configure BFD to notify EFM of faults.

    • Bidirectional association

      Run the oam-bind efm interface interface-type interface-number bfd-session bfd-session-id command to configure EFM and BFD to notify each other of faults.

    NOTE:

    The functions of two commands used to configure association functions in opposite directions are the same as those of the command used to configure the bidirectional association function.

    If the oam-bind efm interface interface-type interface-number bfd-session bfd-session-id command is run, the oam-bind ingress efm interface interface-type interface-number egress bfd-session bfd-session-id and oam-bind ingress bfd-session bfd-session-id egress efm interface interface-type interface-number commands will be displayed in the configuration file.

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Updated: 2019-10-18

N. documento: EDOC1000178318

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