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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 Stack Ports

Example for Configuring DAD Through Stack Ports

Networking Requirements

As shown in Figure 1-38, SwitchA and SwitchB set up a stack. The stack connection mode is MPU connection. It is expected that stack split detection will be performed through a stack forwarding link.

Figure 1-38 Configuring DAD through stack ports

Configuration Roadmap

The configuration roadmap is as follows:
  1. Configure the DAD function on stack ports.


    DAD through stack member ports can be used only when the stack is set up through MPU connection.


  1. Configure the DAD function on stack ports.

    <HUAWEI> system-view
    [~HUAWEI] interface stack-port 1/1
    [~HUAWEI-Stack-Port1/1] dual-active detect mode direct
    [*HUAWEI-Stack-Port1/1] quit
    [*HUAWEI] interface stack-port 2/1
    [*HUAWEI-Stack-Port2/1] dual-active detect mode direct
    [*HUAWEI-Stack-Port2/1] commit
    [~HUAWEI-Stack-Port2/1] return

  2. Verify the configuration.

    # Check the DAD configuration.

    <HUAWEI> display dual-active
    Stack domainID: 10
    Dual-active status: Normal
    Dual-active detect mode: Direct
    Dual-active detect configuration of MEth: Disable
    Dual-active direct detect interfaces configured:
     Stack-Port1/1    up  (Physical)  up  (Protocol)  10  (PeerDomain)
     Stack-Port2/1    up  (Physical)  up  (Protocol)  10  (PeerDomain)
    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 SIP ports used for stack connections on MPUs or removing all stack cables of SIP ports.

    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 SIP ports used for stack connections or reconnecting stack cables of SIP ports so that the stack can be set up again.

Configuration files

  • Stack configuration file

    interface Stack-Port1/1
     dual-active detect mode direct
    interface Stack-Port2/1
     dual-active detect mode direct
Updated: 2019-03-21

Document ID: EDOC1000166610

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