Dell Force10 S55T Installing the S55 System - Page 26

www.dell.com | support.dell.com How units are identified within the stack is determined by the selected identification algorithm. The default algorithm has the units self-identify as Unit 0 through Unit [last] based on the order in which they come on-line. So, when setting up a new set of switches in a stack, you should have no trouble forcing the identification of the management unit and unit IDs by methodically supplying power to the units in your preferred sequence. Similarly, when you add a brand new unit to the stack, the unit will be gracefully added as Unit [last] (the lowest unused number) with the current configuration. Attaching the unit causes each unit in the stack to reload, and the subsequent configuration file in each unit includes the awareness of the new unit. If you have a pre-configured unit that you want to add to the stack, but you want to make sure that the configuration does not override the configuration of the stack, it is best to add the unit while it is powered down, in order to avoid stack management conflicts. You can use the CLI to make stack identification changes on the fly, such as renumbering units (switch renumber), assigning a new management unit (movemanagement command), or removing a unit from stack membership (no member). You can also use commands such as switch priority and member that override the default unit identification 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 removing a unit from a stack and other stacking commands, see the Stacking chapter in the FTOS Configuration Guide and the Stacking Commands chapter in the FTOS Command Reference. 26 | Install the S55