1/1 1/1 10 up up1/2 1/2 10 up up1/3 1/3 10 up upAdd Units to an Existing StackYou can add units to an existing stack in one of three ways.• By manually assigning a new unconfigured unit a position in an existing stack.• By adding a configured unit to an existing stack.• By merging two stacks.If you are adding units to an existing stack, you can either:• allow Dell Networking OS to automatically assign the new unit a position in the stack, or• manually determine each units position in the stack by configuring each unit to correspond with the stack before connecting it.• If you add a unit that has a stack number that conflicts with the stack, the stack assigns the first available stack number.• If the stack has a provision for the stack-number that will be assigned to the new unit, the provision must match the unit type, orDell Networking OS generates a type mismatch error.After the new unit loads, it synchronizes its running and startup configurations with the stack.Manually Assigning a New Unit to an Existing StackTo manually assign a new unit a position in an existing stack, use the following steps.1. On the stack, determine the next available stack-unit number, and the management priority of the management unit.EXEC Privilege modeshow system brief or show system stack-unit2. On the new unit, number it the next available stack-unit number.EXEC Privilege modestack-unit stack-unit-number renumber stack-unit-new-number3. (OPTIONAL) On the new unit, assign a management priority based on whether you want the new unit to be the stack manager.CONFIGURATION modestack-unit stack-unit-number priority priority-number4. Assign a stack group to each unit.CONFIGURATION modestack-unitstack-unit-number stack-group stack-group-number5. Connect the new unit to the stack using stacking cables.Example of Adding a Stack Unit with a Conflicting Stack Number (Before and After)The following example shows adding a stack unit with a conflicting stack number (before).Dell#show system briefStack MAC : 00:01:e8:8a:df:e6Reload Type : normal-reload-- Stack Info --Unit UnitType Status ReqTyp CurTyp Version Ports-------------------------------------------------------------1 Management online S4048-ON S4048-ON 9-8-0-0 642 Member not present3 Member not presentStacking 831
