Figure 4-4 A Sample Configuration Using 100-Mbps Hubs Of Class 2; Figure 4-5 A Sample Configuration Using 100-Mbps Switching Hubs - Hitachi FL.NET User Manual

Configurations using 100-Mbps hubs
• If a 100-Mbps hub of class 1 is used to connect Ethernet devices, it may not be connected in
a multi-stage form. In this case, connect the hub and Ethernet devices in the following way:
Figure 4-3 A Sample Configuration Using a 100-Mbps Hub of Class 1
• If a 100-Mbps hub of class 2 is used to connect Ethernet devices, it may be connected in a
multi-stage form, although the maximum number of 100-Mbps hubs of the same class that
can be connected together is 2. In this case, connect the hubs and Ethernet devices in the
following way (the maximum allowable length of cable connecting the two hubs together is
5 m):

Figure 4-4 A Sample Configuration Using 100-Mbps Hubs of Class 2

• If 100-Mbps switching hubs are used to connect Ethernet devices together in a multi-stage
cascade form, there is basically no limitation on the number of stages used in the multi-stage
connection. In this case, consult the switching hub manual and connect them according to
the instructions given in the manual.
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Figure 4-5 A Sample Configuration Using 100-Mbps Switching Hubs

The only port setting that is supported by the FL.NET module (model LQE702) is
auto-negotiation. Do not use 100-Mbps full-duplex setting for the port of the
switching hub. Disregarding this rule may result in a failure of data
communication when the load on the communication line builds up.
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Hub
100 m
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Hub Hub
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NOTICE
4 FL.NET MODULE WIRING PROCEDURES
Hub
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Hub
100 m
5 m
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Hub
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4-5
Hub
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