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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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Example for Configuring the BFD Echo Function

Example for Configuring the BFD Echo Function

Networking Requirements

As shown in Figure 2-26, SwitchA connects to SwitchB through a direct link. SwitchA supports BFD, whereas SwitchB does not support BFD. Faults on the link between SwitchA and SwitchB need to be fast detected.

Figure 2-26  Networking diagram for configuring the BFD Echo function

Configuration Roadmap

The configuration roadmap is as follows:

  • Configure the BFD Echo function on SwitchA to detect faults on the link between SwitchA and SwitchB.

Procedure

  1. On SwitchA and SwitchB, create VLANs, and configure GE1/0/1 interfaces as hybrid interfaces and add the interfaces to VLANs.

    # Configure SwitchA.

    <HUAWEI> system-view
    [HUAWEI] sysname SwitchA
    [SwitchA] vlan 13
    [SwitchA-vlan13] quit
    [SwitchA] interface gigabitethernet 1/0/1
    [SwitchA-GigabitEthernet1/0/1] port link-type hybrid
    [SwitchA-GigabitEthernet1/0/1] port hybrid pvid vlan 13
    [SwitchA-GigabitEthernet1/0/1] port hybrid untagged vlan 13 
    [SwitchA-GigabitEthernet1/0/1] quit

    # Configure SwitchB.

    <HUAWEI> system-view
    [HUAWEI] sysname SwitchB
    [SwitchB] vlan 13
    [SwitchB-vlan13] quit
    [SwitchB] interface gigabitethernet 1/0/1
    [SwitchB-GigabitEthernet1/0/1] port link-type hybrid
    [SwitchB-GigabitEthernet1/0/1] port hybrid pvid vlan 13
    [SwitchB-GigabitEthernet1/0/1] port hybrid untagged vlan 13 
    [SwitchB-GigabitEthernet1/0/1] quit

  2. Set IP addresses of VLANIF interfaces so that SwitchA can communicate with SwitchB at Layer 3.

    # Configure SwitchA.

    [SwitchA] interface vlanif13
    [SwitchA-Vlanif13] ip address 10.1.1.5 24
    [SwitchA-Vlanif13] quit

    # Configure SwitchB.

    [SwitchB] interface vlanif13
    [SwitchB-Vlanif13] ip address 10.1.1.6 24
    [SwitchB-Vlanif13] quit

  3. Configure a BFD session supporting the BFD Echo function.

    # Configure SwitchA.

    [SwitchA] bfd
    [SwitchA-bfd] quit
    [SwitchA] bfd atob bind peer-ip 10.1.1.6 interface vlanif13 source-ip 10.1.1.5 one-arm-echo
    [SwitchA-bfd-session-atob] discriminator local 1
    [SwitchA-bfd-session-atob] min-echo-rx-interval 100
    [SwitchA-bfd-session-atob] commit
    [SwitchA-bfd-session-atob] quit

  4. Verify the configuration.

    # When the network runs stably, run the display bfd session all verbose command on SwitchA. You can see that a single-hop BFD session is set up and its status is Up.

    [SwitchA] display bfd session all verbose
    --------------------------------------------------------------------------------
    Session MIndex : 256       (One Hop) State : Up        Name : atob
    --------------------------------------------------------------------------------
      Local Discriminator    : 1                Remote Discriminator   : -
      Session Detect Mode    : Asynchronous One-arm-echo Mode
      BFD Bind Type          : Interface(Vlanif13)
      Bind Session Type      : Static
      Bind Peer IP Address   : 10.1.1.6
      NextHop Ip Address     : 10.1.1.6
      Bind Interface         : Vlanif13
      Bind Source IP Address : 10.1.1.5
      FSM Board Id           : 0                TOS-EXP                : 7
      Echo Rx Interval (ms)  : 100
      Actual Tx Interval (ms): 100              Actual Rx Interval (ms): 100
      Local Detect Multi     : 3                Detect Interval (ms)   : 300
      Echo Passive           : Disable          Acl Number             : -
      Destination Port       : 3784             TTL                    : 255
      Proc Interface Status  : Disable          Process PST            : Disable
      WTR Interval (ms)      : -                
      Active Multi           : 3                DSCP                   : - 
      Last Local Diagnostic  : No Diagnostic
      Bind Application       : No Application Bind
      Session TX TmrID       : -                Session Detect TmrID   : -
      Session Init TmrID     : -                Session WTR TmrID      : -
      Session Echo Tx TmrID  : -
      PDT Index              : FSM-0 | RCV-0 | IF-0 | TOKEN-0
      Session Description    : -
    --------------------------------------------------------------------------------
    
         Total UP/DOWN Session Number : 1/0   

Configuration Files

  • SwitchA configuration file

    #
    sysname SwitchA
    #
    vlan batch 13
    #
    bfd
    #
    interface Vlanif13
     ip address 10.1.1.5 255.255.255.0
    #
    interface GigabitEthernet1/0/1
     port link-type hybrid
     port hybrid pvid vlan 13 
     port hybrid untagged vlan 13
    #
    bfd atob bind peer-ip 10.1.1.6 interface Vlanif13 source-ip 10.1.1.5 one-arm-echo
     discriminator local 1
     min-echo-rx-interval 100
     commit
    #
    return
  • SwitchB configuration file

    #
    sysname SwitchB
    #
    vlan batch 13
    #
    interface Vlanif13
     ip address 10.1.1.6 255.255.255.0
    #
    interface GigabitEthernet1/0/1
     port link-type hybrid
     port hybrid pvid vlan 13 
     port hybrid untagged vlan 13
    #
    return
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Updated: 2019-10-18

N. documento: EDOC1000178318

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