SMC Networks 1000 Manual De Usuario
C
ABLES
B-2
Twisted-Pair Cable and Pin Assignments
Caution:
DO NOT plug a phone jack connector into any RJ-45
port. Use only twisted-pair cables with RJ-45 connectors
that conform with FCC standards.
port. Use only twisted-pair cables with RJ-45 connectors
that conform with FCC standards.
The RJ-45 ports on the switch support 1000, 100 and 10 Mbps
Ethernet operation, with auto-negotiation of flow control.
Ethernet operation, with auto-negotiation of flow control.
Caution:
Each wire pair must be attached to the RJ-45 connectors
in a specific orientation.
in a specific orientation.
The figure below illustrates how the pins on the RJ-45 connector are
numbered. Be sure to hold the connectors in the same orientation
when attaching the wires to the pins.
numbered. Be sure to hold the connectors in the same orientation
when attaching the wires to the pins.
1000BASE-T Pin Assignments
1000BASE-T ports support automatic MDI/MDI-X operation, so
you can use straight-through cables for all network connections to
PCs or servers, or to other switches or hubs. In straight-through
cable, pins 1-8, at one end of the cable, are connected straight through
to pins 1-8 at the other end of the cable.
you can use straight-through cables for all network connections to
PCs or servers, or to other switches or hubs. In straight-through
cable, pins 1-8, at one end of the cable, are connected straight through
to pins 1-8 at the other end of the cable.
Use 100-ohm Category 5 or 5e unshielded twisted-pair (UTP) or
shielded twisted-pair (STP) cable for 1000BASE-T connections. Also
be sure that the length of any twisted-pair connection does not exceed
100 meters (328 feet).
shielded twisted-pair (STP) cable for 1000BASE-T connections. Also
be sure that the length of any twisted-pair connection does not exceed
100 meters (328 feet).
The table below shows the 1000BASE-T MDI and MDI-X port
pinouts. These ports require that all four pairs of wires be connected.
pinouts. These ports require that all four pairs of wires be connected.