R211x-HP Flexfabric 11900 Fundamentals Command Reference

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Usage guidelines
The automatic software version rollback function is only available on a dual-MPU device (in standalone
mode), a multichassis IRF fabric, or a single-chassis dual-MPU IRF fabric during an ISSU to a compatible
version.
When you execute the issu run switchover command in a scenario where automatic rollback is
supported, the system starts the automatic-rollback timer. If you do not execute the issu accept or issu
commit command before the timer expires, the system automatically rolls back to the original software
configuration, the software configuration prior to the ISSU.
Change to the automatic-rollback interval does not take effect on the ongoing ISSU process.
Examples
# Set the automatic-rollback timer to 50 minutes.
<Sysname> system-view
[Sysname] issu rollback-timer 50
Related commands
issu rollback
issu run switchover
In standalone mode:
• During an ISSU to a compatible version, use issu run switchover to perform an active/standby
switchover and upgrade the service cards and switching fabric cards.
• During an ISSU to an incompatible version, use issu run switchover to perform an active/standby
switchover and upgrade all cards except for the upgraded MPU.
In IRF mode:
• During an ISSU to a compatible version on a single-chassis IRF fabric, use issu run switchover to
perform an active/standby switchover and upgrade the service cards and switching fabric cards.
• During an ISSU to an incompatible version on a single-chassis IRF fabric, use issu run switchover to
perform an active/standby switchover and upgrade all cards except for the upgraded MPU.
• During an ISSU to a compatible version on a multichassis IRF fabric, use issu run switchover to
perform a master/subordinate switchover.
• During an ISSU to an incompatible version on a multichassis IRF fabric, use issu run switchover to
perform a master/subordinate switchover and upgrade all members that have not been upgraded.
Syntax
issu run switchover
Views
User view
Predefined user roles
network-admin
Usage guidelines
In standalone mode, this command is necessary only when the device has two MPUs:
• For a compatible version, this command depends on the ISSU method: