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Configuration Guide - Virtualization

CloudEngine 8800, 7800, 6800, and 5800 V200R005C10

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

SVF Upgrade

An SVF system can be upgraded using the traditional upgrade method or fast upgrade method:
  • Traditional upgrade method

    In this method, the files for next startup are specified on the parent switches, and then the entire SVF system is restarted.

  • Fast upgrade method

    This method minimizes service interruptions and impact of SVF member switch upgrade on services. During a fast SVF upgrade, all member switches must be manually divided into two groups. The master parent switch and some leaf switches belong to one group, and the standby parent switch as well as other leaf switches belong to the other group. The group to which the standby parent switch belongs will be upgraded first, followed by the group to which the master parent switch belongs.

    In Figure 2-13, the standby parent switch, leaf switches 101 and 103 belong to group 1; the master parent switch and leaf switch 102 belong to group 2. The upgrade procedure is as follows:
    1. The standby parent switch in group 1 restarts with a new version to complete the upgrade. The standby parent switch starts as the master switch and shuts down common service ports other than stack ports and fabric ports.

    2. After the parent switch in group 1 has been upgraded, all the leaf switches in the group load the new software version from the parent switch and then restart to complete the upgrade.

      During the upgrade of group 1, switches in group 2 are forwarding service traffic.

      If group 1 is not upgraded within the specified timeout period, group 1 fails to be upgraded. Group 1 will restart with the previous version to roll back to the previous version.

    3. After group 1 has been upgraded, the parent switch in group 2 shuts down all service ports, while the parent switch in group 1 enables service ports. All the leaf switches in group 2 load the new software version from the parent switch in group 2 and restart together with the parent switch to complete the upgrade.

    4. After group 2 has been upgraded, it joins the SVF system again. The SVF upgrade is now completed.

    Figure 2-13 Fast SVF upgrade
    NOTE:
    • Only the SVF system in which two parent switches set up a stack can be upgraded fast.

    • The previous and target versions for fast upgrade must be V200R001C00 or later versions, and the target version must allow all current member switches to set up an SVF system.

    • If a leaf switch connects to only the standby parent switch, the SVF system cannot be upgraded fast.

    • The current SVF configuration must be the same as the next startup SVF configuration. Otherwise, the SVF system cannot be upgraded fast.

    • The master and standby parent switches must belong to different groups.

    • All the member switches in an SVF system must be divided into groups; otherwise, the SVF system cannot be fast upgraded.

    • If a leaf switch connects to only the master parent switch, this leaf switch must belong to the same group as the master parent switch.

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Updated: 2019-04-03

Document ID: EDOC1100075367

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