Dell S4048T Configuration Manual page 1028

Adding a Configured Unit to an Existing Stack
To add a configured unit to an existing stack, use the following commands.
If a stack unit goes down and is removed from the stack, the logical provisioning configured for that stack-
unit number is saved on the master and standby units. When a new unit is added to the stack, if a stack group
configuration conflict occurs between the new unit and the provisioned stack unit, the configuration of the
new unit takes precedence.
1 Add the configured unit to the top or bottom of the stack.
2 Power on the switch.
3 Attach cables to connect ports on the added switch to one or more existing switches in the stack.
4 Log on to the CLI and enter global configuration mode.
• Login: username
• Password: *****
• Dell> enable
• Dell# configure
5 Configure the ports on the added switch for stacking.
CONFIGURATION mode
stack-unit 1 stack-group group-number
• stack-unit 1: defines the default ID unit-number in the initial configuration of a switch.
• stack-group group-number: configures a port for stacking.
6 Save the stacking configuration on the ports.
EXEC Privilege mode
write memory
7 Reload the switch.
EXEC Privilege mode
reload
Dell Networking OS automatically assigns a number to the new unit and adds it as member switch in the
stack. The new unit synchronizes its running and startup configurations with the stack.
8 If a standalone switch already has stack groups configured.
Attach cables to connect the ports already configured as stack groups on the switch to one or more
switches in the stack.
Dell Networking OS automatically assigns a number to the new unit and adds it as member switch in the
stack. The new unit synchronizes its running and startup configurations with the stack.
Dell Networking OS Behavior: When you add a switch to a stack
• If you configure the new unit with a stack number that is already assigned to a stack member, the stack
avoids a numbering conflict by assigning the new switch the first available stack number.
• If the stack has been provisioned for the stack number that is assigned to the new unit, the pre-
configured provisioning must match the switch type. If there is a conflict between the provisioned
switch type and the new unit, a mismatch error message is displayed.
Stacking 1028