Allied Telesis AT-x930-28GPX, Installation Manual

Page: 148 / 214

Chapter 11: Building the Stack with SFP+ Ports S1 and S2
148
Introduction
This chapter contains instructions on how to build a stack of up to eight
x930 Switches with SFP+ ports S1 and S2 as the stack trunk. Review the
following information before performing the procedures:

No configuration procedures are required if the x930 Switches are
at their default settings and do not contain AT-StackQS Cards.
VCStack is enabled by default and the SFP+ ports S1 and S2 are
the default trunk ports. You can power on the switches of the stack
either individually to control the assignment of the switch ID
numbers yourself or simultaneously to allow the switches to assign
the numbers automatically. Refer to “Powering On the Switches
Sequentially” on page 152 or “Powering On the Switches
Simultaneously” on page 154.

For x930 Switches containing AT-StackQS Cards, you must
perform “Designating SFP+ Ports S1 and S2 as the Stack Trunk”
on page 149 before cabling the trunk ports and building the stack.
As explained in the procedure, you have to explicitly set the SFP+
ports S1 and S2 as the stack trunk with the STACK ENABLE
BUILTIN PORTS command on switches containing AT-StackQS
Cards.
For background information on switch ID numbers, refer to “Switch ID
Numbers” on page 74.
Caution
Do not change switch ID numbers after beginning to configure the
parameter settings of the stack. Otherwise, the stack might assign
configuration settings to the wrong switches the next time you reboot
or power on the stack.