24 | Installing the Switchw w w . d e l l . c o m | s u p p o r t . d e l l . c o m Using SFTOS Stacking CommandsIf the switch is running SFTOS, the commands available to manage stacking are described in theStacking chapters of the SFTOS Command Reference and the SFTOS Configuration Guide.You can execute clear config on the switch to start a clean configuration. Then pre-configure it, asrecommended in Best Practices in the Stacking chapter of the SFTOS Configuration Guide.You can use the SFTOS CLI to make stack identification changes on the fly:• Renumber units: switch renumber• Assign a new management unit: movemanagement• Remove a unit from stack membership: no memberYou can also use commands such as switch priority and member that override the default unitidentification algorithms.Use the show switch command to see the current assignment of the management unit.Use the show switch unit command to see the serial number of the designated unit.For details on and other stacking commands, see the Stacking chapter in the SFTOS Configuration Guideand the Stacking Commands chapter in the SFTOS Command Reference.Using FTOS Stacking CommandsIf the switch is running FTOS, the following commands are available to manage stacking:• Use the stack-unit unit priority 1-14 command to configure the ability of an S-Series switch to becomethe management unit of a stack.• Use the stack-unit unit provision {S25N|S25P|S25V|S50N|S50V} command to pre-configure astacking ID of a switch that will join the stack. This is an optional command that is executed on themanagement unit.• Use the stack-unit unit renumber unit command to renumber a standalone S-Series or any stackmember except the management unit.• Use the show system brief command to see the current assignment of the management unit.• Use the show system stack-unit unit command to see the serial number of the designated unit andother system details.• Use the show system stack-ports command to see the stacking topology and status.For details on using FTOS to remove a unit from a stack or use other stacking commands, see theStacking Commands chapter in the FTOS Command Reference and the S-Series Stacking chapter in theFTOS Configuration Guide.