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Introduction 1 - 3
10BASE-FL and FOIRL IEEE Standards Comparison
10BASE-FL is a subpart of a IEEE standard called 10BASE-F (802.3, section
18), which standardizes three types of Ethernet-over-fiber optic cable.
Table 1-1 describes each 10BASE-F standard
Theory of Operation
Use the 10BASE-FL Module to connect directly to a 10BASE-FL or
FOIRL-compatible device (such as the 3Com model 5101T-FL1 10BASE-FL
Transceiver). However, you can also use the module as your network
backbone link for connecting concentrators together. Connections of both
types are shown in Figure 1-1
Table 1-1. 110BASE-F Standards
10BASE-F Standard Description
10BASE-FB “FB”indicates “fiber backbone.” The optimal
use for this version of fiber Ethernet is as a fiber
backbone.
10BASE-FP “FP” indicates “fiber passive” network. This
standard specifies a fiber optic connection
method that passively splits the fiber optic light
from each station among all the others, entirely
within the optical domain.
10BASE-FL “FL” indicates “fiber link.” A superset of the
1987 IEEE FOIRL standard, the 10BASE-FL
standard ensures compatibility between FOIRL
and 10BASE-FL equipment. However, observe
the more limiting FOIRL parameters if you
interoperate with FOIRL-compliant equipment.