Configuration manual

To display the stack-unit number, use the show system brief command.

Removing a Port from the Stacking Mode

To remove a 40GbE 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 reload the stack for the change to take effect.

Remove a stacked port from a stack.

CONFIGURATION mode

no stack-unit unit-number stack-group group end write memory reload

When the reload completes, the port comes up in 40GbE mode if it is on the base module and in

4x10GbE (quad) mode if the port is on a FlexIO module, such as a 2-Port 40GbE QSFP+ module.

Removing a Switch from a Stack

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.

After you remove all 40GbE ports from a stack (Removing a Port from the Stacking Mode), 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.

If you remove a unit from the middle of a stack, the stack is split into multiple parts. Each split stack forms

a new stack according to MAC addresses or assigned priorities, as described in Configuring and

Configuring and Bringing Up a Stack and Assigning a Priority to Stacked Switches.

Adding a Stack Unit

You can add a new 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 the units to be added to the stack have been previously used, they are assigned the smallest available

unit ID in the stack.

If a standalone switch has no stack groups configured, you can add it to a stack. To add a standalone

switch to a stack, follow these steps.

1. Power on the switch.

2. Attach QSFP or direct attach cables to connect 40GbE ports on the switch to one or more switches

in the stack.

3. Log on to the CLI and enter global configuration mode.

Password: *****

Dell> enable

Dell# configure

4. Configure a 40GbE port for stacking.

CONFIGURATION mode

852

Stacking