Stacking | 221Upgrading a Single Stack UnitUpgrading a single stacked switch is necessary when the unit was disabled due to an incorrect FTOSversion. This procedure upgrades the image in the boot partition of the member unit from thecorresponding partition in the master unit.To upgrade an individual stack unit with a new FTOS version, follow these steps:Figure 17-32 shows an example of how to upgrade an individual stack unit.Figure 17-32. Upgrading a Single Stack Unit ExampleStep Task Command Syntax Command Mode1 Download the FTOS image from the master's bootpartition to the member unit, and upgrade therelevant boot partition in the single stack-memberunit.upgrade system stack-unitunit-number partitionEXEC Privilege2 Reboot the stack unit from the master switch toload the FTOS image from the same partition.boot system stack-unit unit-numberprimary system partitionCONFIGURATION3 Save the configuration. write memory EXEC Privilege4 Reset the stack unit to activate the new FTOSversion.power-cycle stack-unit unit-number EXEC PrivilegeFTOS# upgrade system stack-unit 1 A:!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Image upgraded to Stack unit 1FTOS# configureFTOS(conf)# boot system stack-unit 1 primary system: A:FTOS(conf)# endFTOS#Jan 3 14:27:00: %STKUNIT0-M:CP %SYS-5-CONFIG_I: Configured from consoleFTOS# write memoryJan 3 14:27:10: %STKUNIT0-M:CP %FILEMGR-5-FILESAVED: Copied running-config to startup-config in flashby defaultSynchronizing data to peer Stack-unit!!!!....FTOS# power-cycle stack-unit 1Proceed with power-cycle? Confirm [yes/no]:yes
