Installation guide

Connecting to the Network
3-14 Installation
Connecting to the Network
For connecting unshielded twisted pair (UTP) segments from the network or other
devices, refer to
• Connecting UTP Cables to 4H4282-49 or 4H4202-72 (page 3-14)
• Connecting UTP Cables to 4H4283-49 or 4H4203-72 (page 3-18)
For fiber-optic connections to Mini-GBIC ports, refer to
• Connecting Fiber-Optic Cables to 4H4284-49 (page 3-21)
• Connecting Fiber-Optic Cables to 7G-6MGBIC (page 3-23)
Connecting UTP Cables to 4H4282-49 or 4H4202-72
The fixed RJ45 front panel connections of the 4H4282-49 and 4H4202-72 are 10/100 Mbps
ports. The ports have internal crossovers, and also support automatic-polarity sensing
when configured for automatic-negotiation.
If automatic-negotiation is not activated on a port, use a straight-through cable when
connecting a workstation to the port. When connecting a networking device to the port,
such as a bridge, repeater, or router, use a crossover cable.
If a port is set for auto-negotiation, automatic-polarity sensing is also activated.
Automatic-polarity sensing eliminates the need for a crossover cable, regardless if the
connection is to another network device or a workstation.
In this procedure, the 4H4282-49 is used as the example to connect a twisted pair segment
with RJ45 connectors to the DFE-Gold module. Refer to Figure 3-8 and proceed as follows:
1. Ensure that the device connected to the other end of the segment is powered ON.
Note: If the DFE-Gold module is being installed in a network using Link Aggregation, there
are rules concerning the network cable and port configurations that must be followed for
Link Aggregation to operate properly. Before connecting the cables, refer to the Matrix
DFE-Gold Series Configuration Guide for the configuration information. For details on how
to obtain manuals, refer to “ “Related Documents” on page xv.
Note: All RJ45 front panel ports on the 4H4282-49 and 4H4202-72 support Category 5
Unshielded Twisted Pair (UTP) cabling with an impedance between 85 and 111 ohms.
Category 3 cable may be used if the connection is going to be used only for 10 Mbps.