ISSU commands

ISSU provides the install and issu command sets. After you identify the ISSU method, use Table 13 to choose the command set you want to use.

Table 13: Command set comparison

Item

issu commands

install commands

Upgrade types

  • Compatible.

  • Incompatible.

Compatible.

Patch install/uninstall

Not supported.

Supported.

Upgrade mode

Chassis by chassis.

Chassis by chassis.

Impact on the system

Large.

Small.

Technical skill requirements

Low.

As a best practice, use this command set.

High.

Administrators must have extensive system knowledge and understand the impact of each upgrade task on the network.