Stacking Slots - Allied Telesis AT-x510-28GTX Installation Manual

Stacking Slots

The x510 Series Switches come with two stacking slots. The slots are the
last two SFP+ slots on the switches and are labeled "S1/27" and "S2/28"
on the AT-x510-28GTX Switch and "S1/51" and "S2/52" on the AT-x510-
52GTX Switch.
The slots have two functions. You may use them with the VCStack feature
to build a stack of x510 Series Switches or, by disabling the VCStack
feature, you may use them with regular SFP or SFP+ transceivers as
additional networking slots.
The names of the slots depend on the status of the VCStack feature on the
switch. The management software refers to the slots as "S1" and "S2."
when the VCStack feature is enabled and the slots are used with the
special stacking transceivers to create a stack.
When you disable the VCStack feature to use the slots with regular SFP or
SFP+ transceivers on a stand-alone switch, the slots are referred to as
slots 27 and 28 on the AT-x510-28GTX Switch and 51 and 52 the AT-
x510-52GTX Switch. For instructions on how to disable VCStack to use
the switches as stand-alone units, refer to the x510 Series Installation
Guide for Stand-alone Switches.
Note
When VCStack is enabled on the switch, the stacking slots only
work with the stacking transceivers in Table 5 on page 38. If you
install regular SFP or SFP+ transceivers in the stacking slots when
stacking is activated, the management software disables them and
enters an error message in the buffered log.
x510 Series Installation Guide for Virtual Chassis Stacking
37