SMC Networks EZ Switch SMC-EZ6516TX, Manual

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T
WISTED
-P
AIR
C
ABLE AND
P
IN
A
SSIGNMENTS
9
10BASE-T/100BASE-TX Pin Assignments
With standard straight-through 10BASE-T/100BASE-TX cable, pins 1 and
2 are used for transmitting data, and pins 3 and 6 for receiving data. The
“+” and “-” signs in the table below are used to represent the polarity of the
wires that make up each wire pair.
Because all ports on this switch support automatic MDI/MDI-X
operation, you can use straight-through cables for all network connections
to PCs or servers, or to other switches or hubs.
Connectivity Guidelines
When adding hubs (repeaters) to your network, please follow the
connectivity rules listed below for Fast Ethernet. However, note that
because switches break up the path for connected devices into separate
collision domains, you should not include the switch or connected cabling
in your calculations for cascade length involving other devices.
Note: Network diameter is defined as the wire distance between two
end stations in the same collision domain.
Straight-Through RJ-45 Pin Assignments
End 1 End 2
1 (Tx+) 1 (Tx+)
2 (Tx-) 2 (Tx-)
3 (Rx+) 3 (Rx+)
6 (Rx-) 6 (Rx-)
Maximum Fast Ethernet Network Diameter
Repeater Type and
Number
Twisted Pair
100BASE-TX
Twisted Pair/Fiber
100BASE-TX and FX
1 Class I 200 m (656 ft) 260.8 m (855.4 ft)
1 Class II 200 m (656 ft) 308.8 m (1012.6 ft)
2 Class II 205 m (672.4 ft) 216.2 m (709.1 ft)