The following illustration is an example of how to connect four Rack Mountable
EtherFast 10/100 Auto-Sensing hubs together using fiber optic cabling. Notice
that the hubs at the top and the bottom are equipped with 100BaseFX 1-Port
Distance Extender modules, while the two hubs in the middle have 100BaseFX 2-
Port Tranceiver Modules. The distance extender modules allow data to be sent up
to 208 meters (672 feet). The distance between the two hubs with tranceiver mod-
ules is limited to a maximum of 16 meters (50 feet). For a full explanation of fiber
optic cabling distance rules, see the chart on page 15. Note: In the illustration, no
other 100Mbps hubs can be cascaded to hubs B and C with RJ-45 cabling.
Another 100Mbps hub can be connected to either hub A or hub D with RJ-45
cabling with no problems.
Maximum distance of
208 meters
Maximum distance
of 16 meters
15
Maximum distance of
208 meters
A
D
C
B
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