General Stacking Guidelines - Allied Telesis XS900MX Series Installation Manual

General Stacking Guidelines

Here are the general guidelines to planning a stack:
 A stack can have two XS900MX Switches.
 The two XS900MX Switches of a stack can be the same model or
different models (i.e., AT-XS916MXT and AT-XS916MXS
Switches).
 The switches are connected together with a trunk, consisting of two
ports per switch.
 The default trunk ports are the SFP/SFP+ ports 15/S1 and 16/S2.

If you prefer, you can use any two SFP/SFP+ or twisted pair ports
as the trunk instead of the default trunk ports.
 To use SFP/SFP+ ports for the trunk, you have to use Allied
Telesis approved stacking transceivers. Refer to "Default 15/S1
and 16/S2 Ports" on page 38.
 The switches must have the same version of the AlliedWare Plus
operating software, preferably v5.4.7 or greater.
 Stacking comes as a standard feature with the switch. It does not
require any additional software or license.

XS900MX Switches cannot be stacked with other stacking
switches, such as x530 or x550 Switches.
 If you purchase an optional feature for a stack, you need to
purchase two licenses (one for each switch) and install the licenses
on the switches before cabling the stack.
Note
The XS900MX Switches do not support the AT-SP10TW7 Direct
Attach Cable.
XS900MX Series Installation Guide for VCStack
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