5. Network Configuration of Ethernet
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5. Network Configuration of Ethernet
In the Ethernet control LAN of the TOSDIC-CIE DS system, repeaters (electric repeater or
optical repeater) can be used to add segments to extend the maximum transmission distance. As
a result, the optical fiber cables can be wired outdoor, and the coaxial cable segment can be
extended.
Since OID-DS and SVR-DS are on 10BASE-T, the hub to connect them to PCS-DS on
10BASE5 is used (a hub is a type of repeater).
Basically, the Ethernet control LAN complies with the IEEE802.3 standard. Therefore, addition
of segments and connection to other IEEE802.3 standard LAN comply with the IEEE802.3
standard.
Ethernet System Configuration
This section describes cautions on expanding the transmission line and examples of Ethernet
system configuration.
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Restrictions for Expanding the Transmission Line
(1)
Up to five segments and four repeaters may be included in the transmission line that connects
two stations.
(2)
In the five segments, there can be up to three cable segments, and the remaining segments are
link segments.
(3)
For the link segments that consist of the electric repeaters, use the 10BASE5 cables (yellow
cable). The maximum length of the link segments is 500 meters.
(4)
The maximum link length between optical repeater is 1000 meters. When there is one set of
the link segment of the optical fiber, an optical fiber segment that exceeds 500 meters is
counted as 2 links.
When there are two sets of the link segments of the optical fiber, the total link length should
not exceed the maximum link length.
(5)
The transceiver of the repeater is counted in the maximum number of transceivers (100 units)
connected to one segment.
The position of the repeater may be arbitrary as long as the transceiver can be connected on
the segment. More than one repeaters may be connected.
The maximum number of transceivers on one 10BASE5 coaxial cable segment is 100. The
multi-port transceiver with 2 ports is counted as 2 units.
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