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Designing and Expanding the Network 2 - 3
For more hardware-specific information on the 24-Port Module, refer to
Appendix A.
Table 2-1. Seven Basic Network Rules
Rule Definition Recommendations/Notes
1 If possible, use
10BASE-FB as the
backbone medium.
Use 62.5 micron cable to conform
with the IEEE 10BASE-F and
upcoming ANSI FDDI standards.
Use ST-type connectors.
2 Wire the backbone in
a star topology to
isolate faults.
Make sure to lay extra fiber
cables. The extra cost is small and
you will find you need them as
your network grows.
The star topology conforms to
FDDI wiring as well -- just make
sure to run at least two fiber
strands to every backbone
connection.
3 The maximum Fiber
Ethernet network
diameter is 4200
meters of fiber cable.
The 4200 meters is the maximum
distance between any two
transceivers on the network.
The 4200 meters does not include
the transceiver cable (that is, drop
or patch cable) that connects a
device with an external
transceiver. Transceiver cables
can extend up to 50 meters. Thus,
total network diameter can be as
much as 4300 meters (4200 m + 2
* 50 m) between any two nodes.