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CloudEngine 8800, 7800, 6800, and 5800 V200R002C50 Configuration Guide - Virtualization

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

SVF Upgrade

Context

Three methods can be used to upgrade the software version of an SVF system: system restart, fast upgrade, and in-service software upgrade (ISSU). The following table compares these upgrade methods.

Table 2-6 Upgrade method comparison
Upgrade Method Upgrade Mechanism Application Scenario

System restart

After you specify the new system software to use at the next startup, the SVF system restarts.

This upgrade method is commonly used but will cause lengthy service interruptions. Therefore, this method can be used in scenarios insensitive to the service interruption time.

Fast upgrade

Member switches in the SVF system are divided into groups and restart group by group during an SVF upgrade.

  • This upgrade method shortens service interruption time and is applicable to scenarios sensitive to service interruptions.

  • Leaf switches must be dual-homed to two parent switches or single-homed to the master parent switch.

NOTE:
  • Do not remove or reinstall cards, remove or reinstall optical modules, or power cycle member switches during an SVF upgrade.

  • During an SVF upgrade, ensure that the network is stable and do not configure services on the network.

Procedure

  1. Upload the system software.
    1. Upload the new system software to the master parent switch. For details on how to upload the system software, see File Management in the CloudEngine 8800, 7800, 6800, and 5800 Series Switches Configuration Guide - Basic Configurations.
    2. Run the copy source-filename all#flash: or copy source-filename destination-filename all command to copy the system software version to the standby parent switch.
  2. Perform a software upgrade.

    • System restart

      1. Run the startup system-software system-file all command to specify the system software to use at the next startup.

      2. Run the reboot command to restart the SVF system.

    • Fast upgrade

      1. Run the startup system-software system-file all command to specify the system software to use at the next startup.

      2. Run the system-view command to enter the system view.

      3. Run the stack command to enter the stack management view.

      4. Run the stack upgrade fast group group-id { add | delete } member { member-id1 [ to member-id2 ] } &<1-26> command to divide member switches in the SVF system into groups for fast SVF upgrade.

        By default. member switches in an SVF system are not divided into groups during a fast upgrade.

        To check information about the upgrade groups, run the display stack upgrade fast group [ group-id ] command. To clear the upgrade groups, run the reset stack upgrade fast group { group-id | all } command.

        NOTE:
        • 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.

      5. (Optional) Run the stack upgrade fast rollback-timer time command to set the timeout period of a fast SVF upgrade.

        By default, the timeout period of a fast SVF upgrade is 60 minutes.

        To check the timeout period, run the display stack upgrade fast rollback-timer command.

        NOTE:

        The stack upgrade fast rollback-timer time command specifies the time taken to upgrade the group to which the standby switch belongs instead of the entire SVF system.

      6. Run the stack upgrade fast command to start a fast SVF upgrade.

        After performing a fast upgrade, you can run the display stack upgrade status command to check the upgrade status.

        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.

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Updated: 2019-04-20

Document ID: EDOC1000166645

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