No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

Configuration Guide - Virtualization

CloudEngine 12800 and 12800E V200R002C50

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

Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Stack Master/Standby Switchover

Stack Master/Standby Switchover

Many factors may cause master/standby switchovers in a stack. This section describes the master/standby switchovers triggered by MPU failures or commands.

Master/Standby Switchover Triggered by an MPU Failure

Roles in a stack may change if an MPU in the stack fails.

  • The system master MPU fails.

    Figure 1-22 shows the changes of roles in a stack after the system master MPU fails.

    Figure 1-22 Changes of roles after a failure of the system master MPU
    • The original standby switch becomes the master switch, and the original system standby MPU becomes the system master MPU.
    • The original master switch becomes the standby switch.
    • The standby MPU of the original master switch becomes the system standby MPU and synchronizes data with the system master MPU.
  • The system standby MPU fails.

    Figure 1-23 shows the changes of roles in a stack after the system standby MPU fails.

    Figure 1-23 Changes of roles after a failure of the system standby MPU
    • The master and standby switches retain their roles.
    • The standby MPU of the standby switch becomes the system standby MPU and synchronizes data with the system master MPU.
  • A system candidate standby MPU fails.

    Failures of candidate standby MPUs do not cause any change of roles in the stack.

Master/Standby Switchover Triggered by Commands

Figure 1-24 shows the changes of roles in a stack after a master/standby switchover is triggered by a command.
Figure 1-24 Changes of roles after a command-triggered master/standby switchover
  • The original standby switch becomes the master switch, and the original system standby MPU becomes the system master MPU.
  • The original system master MPU becomes a candidate system standby MPU, and the original master switch becomes the standby switch.
  • The standby MPU of the original master switch becomes the system standby MPU and synchronizes data with the system master MPU.
Translation
Download
Updated: 2019-03-21

Document ID: EDOC1000166610

Views: 43909

Downloads: 131

Average rating:
This Document Applies to these Products

Related Version

Related Documents

Share
Previous Next