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Configuration Guide - Virtualization

CloudEngine 12800 and 12800E V200R002C50

This document describes the configurations of virtualization, including stack and VS.

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Example for Configuring DAD Through Management Interfaces

Example for Configuring DAD Through Management Interfaces

Networking Requirements

As shown in Figure 1-37, SwitchA and SwitchB set up a stack and have their management interfaces connected to the management network. It is expected that stack split detection will be performed through the management network.

Figure 1-37 Configuring DAD through management interfaces

Configuration Roadmap

The configuration roadmap is as follows:
  1. Configure IP addresses for the stack management interfaces and configure the DAD function.


    To implement DAD through management interfaces, ensure that IP addresses are configured for management interfaces. After member switches set up a stack, only one management interface MEth0/0/0/0 is displayed for the stack. You only need to configure an IP address for this management interface.


  1. Configure the DAD function on the stack management interfaces.

    <HUAWEI> system-view
    [~HUAWEI] interface meth 0/0/0/0
    [~HUAWEI-MEth0/0/0/0] ip address 24
    [*HUAWEI-MEth0/0/0/0] dual-active detect enable
    [*HUAWEI-MEth0/0/0/0] commit
    [~HUAWEI-MEth0/0/0/0] return

  2. Verify the configuration.

    # Check the DAD configuration.

    <HUAWEI> display dual-active
    Stack domainID: 10
    Dual-active status: Normal
    Dual-active detect mode: --
    Dual-active detect configuration of MEth: Enable
    Dual-active direct detect interfaces configured:
    Dual-active relay detect interfaces configured:
    Excluded ports(configurable):
    Excluded ports(can not be configured):

  3. Verify the DAD function.

    After the DAD function is configured:
    • If a stack split occurs, the alarm "DAD_1. hwDadConflictDetect" is generated.
    • If the stack recovers from a split, the alarm "DAD_1. hwDadConflictResume" is generated.
    If no service is configured in the stack, simulate a stack split situation to check whether the DAD function is configured successfully.

    Do not trigger a stack split when services are running on the stack. Otherwise, services are affected.

    1. Trigger a stack split by disabling all ports with stack cables connected or removing all stack cables.

    2. Run the display stack command to check whether the number of stack member switches reduces. If so, the stack has split.

    3. Run the display trapbuffer command to check whether there are DAD alarms.
      <HUAWEI> display trapbuffer
      Aug 15 2016 14:32:35 HUAWEI %%01DAD/1/hwDadConflictDetect(t):CID=0x807f0419-OID=;Dual-active scenario is detected.
    4. The preceding operations verify that the DAD function has been configured successfully.

    5. Restore the stack by enabling all ports used for stack connections or reconnecting stack cables so that the stack can be set up again.

Configuration files

  • Stack configuration file

    interface MEth0/0/0/0
     ip address
     dual-active detect enable
Updated: 2019-03-21

Document ID: EDOC1000166610

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