Powering On The Switches Individually - Allied Telesis AT-x930-28GTX Installation Manual

Chapter 13: Powering On the Stack

Powering On the Switches Individually

154
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. The switches retain their new ID numbers even when you
power off or reset the stack.
The first switch to be powered on during the initial power on sequence
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:
 This is the initial power-on sequence of the stack.
 You verified that VCStack is enabled on the switches, as explained
in Chapter 10, "Verifying the Status of VCStack" on page 133.

The switches are stacked together with the S1 and S2 slots or AT-
StackQS Cards.
 The ID numbers are set to the default 1.
 All the switches are powered off.
 If the stack contains one or more switches with AT-PWR250-80
DC power supplies, you should have already connected the
grounding and power wires to the DC connectors on the power
supplies. For instructions, refer to Chapter 9, "Wiring the DC
Connector on the AT-PWR250-80 Power Supply" on page 129.
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 162.
To power on the switches, perform the following procedure:
1. Power on the switch you want to have ID number 1.
 If the switch has an AC power supply, connect the AC power cord
to the connector on the back panel and to an appropriate power
source. Refer to as shown in Figure 83 on page 155. If the switch
has two power supplies, power on both supplies.