Planning The Stack - Allied Telesis CentreCOM GS970EMX/52 Installation Manual

Planning the Stack

Here are questions to answer before building the stack:
How many switches will be in the stack? Stacks can have one

master switch and up to three member switches.
Will you use the SFP+ ports or Multi-Gigabit copper ports for the

stack trunk? Refer to "Stack Trunks" on page 46.
If the SFP+ ports will be the trunk ports, have you purchased the

transceivers? Refer to the product's data sheet on the Allied
Telesis website for a list of supported transceivers.
Have you filled out the worksheet in "VCStack Worksheet" on

page 60?
Have you connected network cables to the ports on the switches?

If so, you should disconnect them before configuring switches for
stacking.
Note
Cabling the trunk ports before activating and configuring the
VCStack feature may result in loops in your network topology, which
can cause poor network performance.
How will you initially power on the switches of the stack? Will you

power them on sequentially so as to select the master switch
yourself, or simultaneously so that they select the master switch,
automatically? Refer to "Master and Member Switches" on
page 54.
If you plan to power on the switches sequentially, have you

determined the order in which you will power them on? This will
determine their switch ID numbers and the initial assignment of the
master switch. Refer to "Switch ID Numbers" on page 55.
CentreCOM GS970EMX Series Installation Guide for Virtual Chassis Stacking
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