Reference Guide

To display the stack-unit number, use the show system brief command.
Removing a Stack Group from Stacking Mode
To remove a stack group of four 10 GbE ports or one 40 GbE port from the stack, use the no form of the
stack-unit unit-number stack-group number command.
After entering the command, save the configuration and if necessary, re-attach the cables to ports in a
different stack group that has been enabled for stacking. Then reload the stack for the change to take
effect.
1. Remove a stacking port from a stack.
CONFIGURATION mode
no stack-unit unit-number stack-group group
2. Save the port configuration.
EXEC Privilege mode
write memory
3. Reload the stack for the port reconfiguration to take effect.
EXEC Privilege mode
reload
Remove a Switch from a Stack
After you remove all ports from an S5000 stack, the switch functions in standalone mode but retains the
running and startup configuration that was last synchronized by the master switch while it operated as a
stack unit.
For more information, refer to Removing a Stack Group from Stacking Mode.
To remove a switch from a stack, disconnect the stacking cables from the unit either when the unit is
powered on or off and is online or offline.
If you remove a unit from the middle of a daisy-chained stack, the stack is split into two parts. Each split
stack forms a new stack according to MAC addresses or assigned priorities, as described in Configuring
Stacking Ports and Bringing Up a Stack and Assigning a Priority to Stacked Switches.
Adding a Stack Unit
Before you add a unit to an S5000 stack, to verify that the switch is running the same Dell networking OS
version. use the
show version command, then power down the switch.
You can add a new powered-down unit to an existing stack both when the unit has no stacking ports
(stack groups) configured and when the unit already has stacking ports configured. If you add a unit that
was previously configured for stacking to a stack, it is assigned the smallest available unit number in the
stack.
You can also pre-configure a stack unit number and priority on the switch to be added by using the
following commands.
Stacking
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