Mounting and wiring
BK9053, BK9103 19Version: 2.3.0
3.5 Ethernet topologies
BK9053
Since the BK9053 has only one port, a conventional star topology must be used.
BK9103
The BK9103 features an internal triple switch with two external ports and one internal port. The internal
switch facilitates creation of a line topology. A maximum of 20 BK9103s can be connected in series in a
physical line. The maximum distance between two BK9103s is 100 m. The maximum overall line length is
therefore 2 km. No further switch may be included in this line.
Fig.9: Ethernet topology with several BK9103 in two lines
The BK9103 also enables a classic star topology to be set up. In this case the second port is not used. Both
port interfaces are equivalent.
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