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 Upgrade

Stack Upgrade

A stack can be upgraded using the traditional upgrade method (by specifying the next-startup files and restarting the entire stack) or the fast upgrade function:
  • Traditional upgrade method: You need to specify next-startup files and restart the entire stack. This method causes lengthy service interruptions and is not applicable to scenarios requiring short service interruptions.

  • Fast upgrade: This upgrade method provides a mechanism to minimize the service interruption time during software upgrade of stack member switches, reducing impact of the upgrade on services.

    Figure 1-25 shows the fast stack upgrade progress:
    1. Before the upgrade, downstream and upstream devices are dual-homed to the stack using Eth-Trunks. If this connection mode is not used, there will be a lengthy traffic interruption during the upgrade.
    2. During the upgrade, the standby switch first restarts with the new system software. After the upgrade is complete, data traffic is forwarded by the master switch.
    3. After the standby switch is upgraded, it becomes the master switch and starts to forward data traffic. Then the original master switch restarts with the new system software. After the upgrade is complete, the original master switch becomes the new standby switch in the stack.
    4. After the upgrade is complete, data traffic is forwarded normally.
    Figure 1-25 Traffic forwarding during a fast upgrade
    During a fast upgrade, if the standby switch cannot be upgraded due to faults such as upgrade timeout, stack link fault, and board registration failure, the standby switch will roll back to the previous version. After the standby switch is upgraded successfully, the stack system cannot roll back to the previous version.
    NOTE:

    In LPU connection mode, a switch may restart multiple times during the rollback in a fast upgrade.

Translation
Download
Updated: 2019-03-21

Document ID: EDOC1000166610

Views: 43861

Downloads: 131

Average rating:
This Document Applies to these Products

Related Version

Related Documents

Share
Previous Next