Allied Telesis x510 Series - Manual (Page 31)

x510 Series Installation Guide for Stand-alone Switches
31
Stacking SFP+ Slots
Two of the four SFP+ slots on the front panel of the switch can be 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 in how you configure 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 slots for the stacking transceivers are SFP+ slots 27 and 28 on the 28-
port switches and slots 51 and 52 on the 52-port switches.
The stacking transceivers are listed in Table 5.
Note
This guide explains how to install the devices as stand-alone units.
For instructions on how to install the switches in a stack, refer to the
x510 Series Installation Guide for Virtual Chassis Stacking.
Table 5. Stacking Transceivers
Transceiver Model Cable Type Distance
AT-StackXS/1.0 Twisted pair 1 meter
AT-StackOP/0.3 Fiber optic 300 meters
AT-StackOP/9.0 Fiber optic 9 kilometers