Stackable Architecture; Back-To-Back; Internal Stacker; External Stacker - Cabletron Systems SmartSTACK STS16-20RM Installation And User Manual

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Stackable Architecture

All SmartStack STS16-20x switches are stackable.
The STS16-20RM and the STS16-20FRM switch can be stacked using the
SmartStack STS-LM Link Module, the SmartStack STS-5SU Stacker Unit or the
SmartStack STS-8SU Stacker Unit for connecting up to eight switches in a stack.

Back-to-Back

Two STS16-20RM series switches can be connected together by fitting each switch
with the SmartStack STS-LM Link Module and connecting the switches together
using an appropriate stacker link cable. This simple connection doubles the number
of ports available, giving a total maximum of 56 ports.

Internal Stacker

The SmartStack STS-5SU Stacker Unit can be inserted into the stacker port of a
switch. It allows up to five switches from the STS16-20 series to be stacked together.
One of the switches in the stack must contain the SmartStack STS-5SU. Each switch
in the stack must be equipped with a SmartStack STS-LM Link Module and an
appropriate stacker link cable. This can result in a stack of as many as five STS16-
20RM series switches. The SmartStack STS-5SU Stacker Unit works as a common
backplane switching fabric, which provides 1.4 Gbps of aggregate bandwidth.

External Stacker

The SmartStack STS-8SU Stacker Unit is an external stack unit that allows up to
eight STS16-20RM series switches to be stacked together. Each switch in the stack
must be equipped with an SmartStack STS-LM Link Module and an appropriate
stacker link cable. The SmartStack STS-8SU Stacker Unit works as a common
backplane switching fabric, which provides 2.2 Gbps of aggregate bandwidth.
Note: The STS16-20RM and the STS16-20FRM can be stacked together with
switches from the STS16-20 series in any desired combination. All switches in a
stack must, however, run the same software version.
SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Switch Overview