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C2624M (6/07) 7
Product Overview
DESCRIPTION
The FX82012 unmanaged Ethernet switch provides one 10BASE-T/100BASE-TX port and two 100BASE-FX
fiber ports for the transport of bidirectional Ethernet data. Available in multimode and single-mode versions,
the fiber ports use wavelength division multiplexing (WDM), which allows bidirectional data to be
transported in a single fiber.
The FX82012 switch can be used in point-to-point and drop-and-repeat applications:
• In a point-to-point application, a second fiber port provides an optional redundant fiber link.
Using the fiber redundancy option, the second fiber port—which is idle during regular
operation—becomes operational if the primary fiber port fails. Refer to Figure 1 for an
illustration of a point-to-point application using fiber redundancy.
• In a drop-and-repeat application, two fiber ports allow one or more Ethernet devices to be
connected into a fiber optic daisy chain. Refer to Figure 2 for an illustration of a sample drop-
and-repeat application.
Figure 1. Point-to-Point Application with Fiber Redundancy
Figure 2. Drop-and-Repeat Application Example
FX82012-2
FX82012-2
ONE 10/100 Mbps
CONNECTION
ONE
FIBER
(REDUNDANT)
ONE
FIBER
(PRIMARY)
ONE 10/100 Mbps
CONNECTION
POINT-TO-POINT APPLICATION WITH FIBER REDUNDANCY
ONE 10/100 Mbps
CONNECTION
ONE 10/100 Mbps
CONNECTION
ONE 10/100 Mbps
CONNECTION
ONE 10/100 Mbps
CONNECTION
FX82012-2FX82012-2FX82012-2FX82012-2
ONE
FIBER
ONE
FIBER
ONE
FIBER
SAMPLE DROP-AND-REPEAT APPLICATION