Install Guide

● allow Dell EMC 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, or Dell EMC 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 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.
The following example shows adding a stack unit with a conflicting stack number (before).
The following example shows adding a stack unit with a conflicting stack number (after).
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: *****
● DellEMC> enable
● DellEMC# configure
5. Configure the ports on the added switch for stacking.
CONFIGURATION mode
● : 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.
766
Stacking