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• 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 conguring each unit to correspond with the stack before connecting it.

• If you add a unit that has a stack number that conicts with the stack, the stack assigns the rst 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, or Dell

Networking OS generates a type mismatch error.

After the new unit loads, it synchronizes its running and startup congurations with the stack.

Manually Assigning a New Unit to an Existing Stack

To 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 mode

show system brief or show system stack-unit

2 On the new unit, number it the next available stack-unit number.

EXEC Privilege mode

stack-unit stack-unit-number renumber stack-unit-new-number

3 (OPTIONAL) On the new unit, assign a management priority based on whether you want the new unit to be the stack manager.

CONFIGURATION mode

stack-unit stack-unit-number priority priority-number

4 Assign a stack group to each unit.

CONFIGURATION mode

stack-unitstack-unit-number stack-group stack-group-number

5 Connect the new unit to the stack using stacking cables.

Example of Adding a Stack Unit with a Conicting Stack Number (Before and After)

The following example shows adding a stack unit with a conicting stack number (before).

Dell#show system brief

Stack MAC : 90:b1:1c:f4:a7:c7

Reload-Type : normal-reload [Next boot : normal-reload]

-- Stack Info --

Unit UnitType Status ReqTyp CurTyp Version Ports

------------------------------------------------------------------------------------

0 Standby online S6000 S6000 1-0(0-3666) 128

1 Member not present

2 Member online S6000 S6000 1-0(0-3666) 128

3 Member not present

4 Member not present

5 Management online S6000 S6000 1-0(0-3666) 128

The following example shows adding a stack unit with a conicting stack number (after).