Chapter 8: Powering On the Stack

Powering On the Switches Individually

This procedure explains how you can control the assignment of the ID numbers of the switches by powering on the units one at a time during the initial power-on sequence. The first switch is assigned ID number 1, the next unit is assigned ID number 2, and so on. This procedure is useful when the switches are installed in the same equipment rack and you want to number them in sequence, such as from top to bottom, to make them easy to identify. After the ID number are assigned, the switches retain their assignments even when you power off or reset the stack.

During the initial power on sequence, the first switch to be powered on becomes the master switch of the stack. However, if you do not change the priority values of the units, the next time you reset or power cycle the stack the units use their MAC addresses to select the master switch. This might result in a different switch being assigned that role. However, this does not affect their ID number assignments, the configuration of the switches, or the manner in which you manage the stack.

This procedure assumes the following:

ˆThis is the initial power-on sequence of the stack.

ˆYou verified that VCStack is enabled on the switches, as explained in Chapter 6, “Verifying the Status of VCStack and Activating VCStack” on page 85.

ˆYou connected the switches with stacking transceivers, as explained in Chapter 7, “Cabling the Stacking Ports” on page 91.

ˆThe ID numbers are set to the default 1.

ˆAll the switches are powered off.

If you want to monitor the power on sequence, you may connect a terminal or PC with a terminal emulator program to the Console port on the switch you intend to power on first. The messages are found in “Monitoring the Initialization Processes” on page 74.

To power on the switches, perform the following procedure:

1.Power on the switch you want to have ID number 1.

Connect the power cords to the connectors on the power supply modules and to the appropriate power sources, as shown in “Connecting AC Power to a Power Supply Module” on page 67 or “Power Wiring to a DC AT-PWR250R-80 Power Supply Module” on page 69.

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Allied Telesis AT-X510DP-52GTX manual Powering On the Switches Individually