10Base-T/100Base-Tx Pin Assignments; Connectivity Guidelines - SMC Networks EZ6516TX - annexe 1 Manual

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.
Straight-Through RJ-45 Pin Assignments
End 1
1 (Tx+)
2 (Tx-)
3 (Rx+)
6 (Rx-)

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.
Repeater Type and
Number
1 Class I
1 Class II
2 Class II
Note:
Maximum Fast Ethernet Network Diameter
Twisted Pair
100BASE-TX
200 m (656 ft)
200 m (656 ft)
205 m (672.4 ft)
Network diameter is defined as the wire distance between two
end stations in the same collision domain.
T -P C
WISTED AIR
End 2
1 (Tx+)
2 (Tx-)
3 (Rx+)
6 (Rx-)
P A
ABLE AND IN
Twisted Pair/Fiber
100BASE-TX and FX
260.8 m (855.4 ft)
308.8 m (1012.6 ft)
216.2 m (709.1 ft)
SSIGNMENTS
9