General Stacking Guidelines - Allied Telesis AlliedWare Plus Installation Manual

Chapter 2: Virtual Chassis Stacking

General Stacking Guidelines

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Here are additional stacking guidelines:
Stacking is enabled by default on x930 Switches.

VCStack comes standard with the AlliedWare Plus software for

x930 Switches. No additional software or licenses are required.
The switches must all have the same version of AlliedWare Plus

software.
The switches can be the same or different x930 models.

Any x930 Switch can be the master switch of a stack.

A stack of x930 Switches cannot contain other stacking switches,

such as x600 or x610 Switches.
In stacks of three or more switches, all the switches must have the

same number of trunk ports.
Do not configure switch features, such as virtual LANs and routing

protocols, before building the stack. Switches might discard the
settings when the stack is powered on for the first time.
Trunk ports must be directly linked together. There cannot be any

intermediary devices, such as media converters, routers, or other
switches, between trunk ports.
Trunks cannot have different types of trunk ports. For example, a

trunk cannot have both Gigabit copper ports and ports S1 and S2.