Connecting To The Network; Connecting Utp Cables - Enterasys Matrix 7G4202-72 Hardware Installation Manual

Connecting to the Network

This section provides the procedures for connecting unshielded twisted pair (UTP) segments from
the network or other devices to the 7G4282‐49 ("Connecting UTP Cables" on page 3‐9).

Connecting UTP Cables

The fixed RJ45 front panel connections of the 7G4202‐72 and 7G4282‐49 are 10/100/1000 Mbps
ports. These 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 7G4202‐72 is used as the example to connect a twisted pair segment to the
module. It is also assumed that the chassis power is turned on to provide power to the module.
Refer to Figure
1. Ensure that the device connected to the other end of the segment is powered ON.
2. Connect the twisted pair segment to the module by inserting the RJ45 connector on the
twisted pair segment into the appropriate RJ45 port connector.
Note: If the DFE-Platinum module is being installed in a network using Link Aggregation, there are
rules concerning network cables and port configurations that must be followed for Link Aggregation
to operate properly. Before connecting the cables, refer to the Enterasys Matrix DFE-Platinum
Series Configuration Guide for the configuration information. For details on how to obtain manuals,
refer to the "Related Documents" on page xii
Note: All RJ45 front panel ports on the 7G4202-72
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.
3‐4 and proceed as follows:
.
and 7G4282-49 support Category 5 Unshielded
DFE-Platinum Series Hardware Installation Guide 3-9
Connecting to the Network