Stacking Slots; Figure 7: Stacking Transceiver - Allied Telesis AT-GS924MX Installation Manual

Stacking Slots

The S1 and S2 slots on the front panel of the switch are used with special
stacking transceivers to create a VCStack of up to four switches. The
switches of a VCStack act as a single virtual unit. They synchronize their
actions so that switching operations, like spanning tree protocols, virtual
LANs, and static port trunks, span across all the units and ports. The two
main advantages of stacks are:
You can manage multiple units simultaneously, which can simplify

network management.
You have more flexibility with some of the features. For instance, a

static port trunk on a stand-alone switch has to consist of ports
from the same switch. In contrast, a static trunk on a stack may
consist of ports from different switches in the same stack.
The stacking transceiver is shown in Figure 7. It is called the AT-SP10TW,
and has two SFP transceiver-style connectors and one meter of twinax
cable.
Note
This guide explains how to install the devices as stand-alone units.
For instructions on how to install the switches in a stack with Virtual
Chassis Stacking (VCStack), refer to the AT-GS900MX Series
Installation Guide for VCStack.
Note
For stacking, the stacking slots only support the AT-SP10TW
stacking transceiver. However, the stacking slots may also be used
as regular networking ports.
AT-GS900MX Series Installation Guide for Stand-alone Switches
Figure 7. Stacking Transceiver
35