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ME60 V800R010C10SPC500 Configuration Guide - IP Routing 01

This is ME60 V800R010C10SPC500 Configuration Guide - IP Routing
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Example for Configuring Split Horizon

Example for Configuring Split Horizon

This section describes how to configure split horizon to prevent routing loops.

Networking Requirements

In Figure 8-3, IPv6 addresses are assigned to all interfaces on each ME device; RIPng is configured on each ME device and RIPng services run normally. It is required that split horizon be configured on ME device A and ME device C.

Figure 8-3 Preventing routing loops
NOTE:

Interfaces 1 and 2 in this example are GE 1/0/0 and GE 2/0/0, respectively.


Configuration Notes

When configuring split horizon to prevent routing loops, note the following:

If both split horizon and poison reverse are configured, only poison reverse takes effect.

Configuration Roadmap

The configuration roadmap is as follows:

  1. Enable split horizon.

Data Preparation

To complete the configuration, you need the following data:

  • RIPng network segments 2001:db8:3::1/96, 2001:db8:4::1/96, and 2001:db8:5::1/96 on Device A

  • RIPng network segments 2001:db8:1::2/64 and 2001:db8:2::2/64 on Device B

  • RIPng network segments 2001:db8:7::1/96, 2001:db8:8::1/96, and 2001:db8:9::1/96 on Device C

  • IPv6 addresses of each interface

Procedure

  1. Configure split horizon.

    Configure split horizon on the RIPng interfaces of all ME devices. The configurations of Device B and Device C are similar to the configuration of Device A. For configuration details, see Configuration Files in this section.

    # Configure Device A.

    [~DeviceA] interface gigabitethernet1/0/0
    [~DeviceA-GigabitEthernet1/0/0] ripng split-horizon
    [*DeviceA-GigabitEthernet1/0/0] quit
    [*DeviceA] interface gigabitethernet1/0/1
    [*DeviceA-GigabitEthernet1/0/1] ripng split-horizon
    [*DeviceA-GigabitEthernet1/0/1] quit
    [*DeviceA] interface gigabitethernet1/0/2
    [*DeviceA-GigabitEthernet1/0/2] ripng split-horizon
    [*DeviceA-GigabitEthernet1/0/2] quit
    [*DeviceA] interface gigabitethernet1/0/3
    [*DeviceA-GigabitEthernet1/0/3] ripng split-horizon
    [*DeviceA-GigabitEthernet1/0/3] quit
    [*DeviceA] commit

  2. Verify the configuration.

    # Run the display ripng 1 interface verbose command on Device A and Device C to check whether split horizon has been enabled. Use the command output on Device A as an example. If the displayed Split-Horizon field is Enabled, split horizon has been enabled.

    [~DeviceA] display ripng 1 interface verbose
     GigabitEthernet1/0/0
        FE80::A0A:200:1
        State : UP, Protocol : RIPNG, MTU : 1440
        Metricin : 0 , Metricout : 1
        Default Route : Disabled
        Poison Reverse : Disabled
        Split Horizon : Enabled  
     GigabitEthernet1/0/1(10.1.1.1)
        FE80::A0A:200:1
        State : UP, Protocol : RIPNG, MTU : 1440
        Metricin : 0 , Metricout : 1
        Default Route : Disabled
        Poison Reverse : Disabled
        Split Horizon : Enabled  
     GigabitEthernet1/0/2
        FE80::A0A:200:1
        State : UP, Protocol : RIPNG, MTU : 1440
        Metricin : 0 , Metricout : 1
        Default Route : Disabled
        Poison Reverse : Disabled
        Split Horizon : Enabled  
     GigabitEthernet1/0/3
        FE80::A0A:200:1
        State : UP, Protocol : RIPNG, MTU : 1440
        Metricin : 0 , Metricout : 1
        Default Route : Disabled
        Poison Reverse : Disabled
        Split Horizon : Enabled  

Configuration Files

  • Device A configuration file

    #
    sysname DeviceA
    #
    ipv6
    #
    interface GigabitEthernet1/0/0
     undo shutdown
     ipv6 enable
     ipv6 address 2001:db8:1::1/64
     ripng 1 enable
    #
    interface GigabitEthernet1/0/1
     undo shutdown
     ipv6 enable
     ipv6 address 2001:db8:3::1/96
     ripng 1 enable
    #
    interface GigabitEthernet1/0/2
     undo shutdown
     ipv6 enable
     ipv6 address 2001:db8:4::1/96
     ripng 1 enable
    #
    interface GigabitEthernet1/0/3
     undo shutdown
     ipv6 enable
     ipv6 address 2001:db8:5::1/96
     ripng 1 enable
    #
    ripng 1
    #
    return
  • Device B configuration file

    #
    sysname DeviceB
    #
    ipv6
    #
    interface GigabitEthernet1/0/0
     undo shutdown
     ipv6 enable
     ipv6 address 2001:db8:1::2/64
     ripng 1 enable
    #
    interface GigabitEthernet2/0/0
     undo shutdown
     ipv6 enable
     ipv6 address 2001:db8:2::2/64
     ripng 1 enable
    #
    ripng 1
    #
    return
  • Device C configuration file

    #
     sysname DeviceC
    #
    ipv6
    #
    interface GigabitEthernet1/0/0
     undo shutdown
     ipv6 enable
     ipv6 address 2001:db8:2::1/64
     ripng 1 enable
    #
    interface GigabitEthernet1/0/1
     undo shutdown
     ipv6 enable
     ipv6 address 2001:db8:7::1/96
     ripng 1 enable
    #
    interface GigabitEthernet1/0/2
     undo shutdown
     ipv6 enable
     ipv6 address 2001:db8:8::1/96
     ripng 1 enable
    #
    interface GigabitEthernet1/0/3
     undo shutdown
     ipv6 enable
     ipv6 address 2001:db8:9::1/96
     ripng 1 enable
    #
    ripng 1
    #
    return
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Updated: 2019-01-04

Document ID: EDOC1100059437

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