Vcstack Feature - Allied Telesis AT-x550-18XTQ Installation Manual

Chapter 1: Overview

VCStack Feature

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You can use the switches as stand-alone units or join multiple units
together with the VCStack feature. 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 of the units and ports. Two advantages of stacks
are listed here:
 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
can consist of ports from the same switch. In contrast, a static
trunk on a stack can have ports from different switches in the same
stack.
For more information, refer to Chapter 2, "Virtual Chassis Stacking" on
page 51.