SMC Networks SMC6224M Stack Operations

S TACK O PERATIONS
2-5
Stack Operations
You can stack up to eight SMC6224M units, four SMC6248M units, or
four units when both switch types are stacked together. Refer to the
Installation Guide for details on stacking these units. One unit in the stack
acts as the Master for configuration tasks and firmware upgrade. All of the
other units function in Slave mode.
Note: If more than one stack Master is selected using the Master push
button on the switch’s front panel, the stack will not function.
Also, if a stack consists of more than one unit, and the Master
button is not depressed on any unit, the stack will not function.
Unit Numbering
Note the following points about unit numbering:
• When the stack is initially powered on, the Master unit is designated as
unit 1 in a ring topology. In a line topology, the stack is simply
numbered from top to bottom, with the first unit in the stack
designated at unit 1. This unit identification number can be selected on
the front panel graphic of the web interface, or fro m the CLI.
• To configure any unit in the stack, first verify the unit number by
counting down from the Master unit in a ring topology or from the top
unit in a line topology (or use the light unit command to display the
unit number via the port LEDs as described on page 4-78), and then
select the appropriate unit number from the web or console
management interface.
• If a unit in the stack fails or is removed from the stack, the unit
numbers will not change. This means that when you replace a unit in
the stack, the original configuration for the failed unit will be restored
to the replacement unit.