Powering On The Switches Sequentially - Allied Telesis AT-SB*908 GEN2 Installation Manual

Powering On the Switches Sequentially

This procedure explains how to 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 powered on is assigned the ID
number 1, the second unit is given the ID number 2, and so on. Once the
ID numbers are assigned, the switches retain them even when you power
off or reset the stack.
Powering on the switches in sequence can be useful in the following
situations:
 If the switches are installed in the same equipment rack, you can
number them in sequence, such as from top to bottom, to make
them easier to identify.
 You want a switch to retain its stand-alone configuration when it
becomes part of a stack. This is useful if you are building a stack
where one switch is already operating as a stand-alone unit in your
network. If you power on that switch first, it is assigned the ID
number 1 and retains its configuration. This saves you from having
to reconfigure its parameter settings once it becomes part of 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 numbers, 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 configured the switches for stacking, as explained in Chapter
6, "Configuring Switches for Stacking" on page 141.

The switches are connected with a stack trunk. For background
information, refer to "Stacking Guidelines" on page 41. For cabling
instructions, refer to Chapter 7, "Cabling the AT-XEM2 Line Card
Ports" on page 157.
 The ID numbers are set to the default 1.
 All the switches are powered off.
To monitor the power on sequence, you can 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 137.
AT-SBx908 GEN2 Installation Guide for Virtual Chassis Stacking
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