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Dell EMC Configuration Guide for the S3100 Series 9.14.2.4

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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.
    Dell EMC 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 EMC 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.

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