Enterasys Networks 7S4280-19-SYS - Manual (Page 47)

Connecting to the Network
Enterasys NAC Controller Hardware Installation Guide 4-7
Figure 4-4 Installing the NAC Controller PEP into the Matrix N1 Chassis
Connecting to the Network
This section provides the procedures for connecting unshielded twisted pair (UTP) segments from
the network or other devices to the 2S4082‐25 (“
Connecting UTP Cables to the 2S4082‐25 ” on
page 4‐7) and connecting fiber optic cables to the Mini‐GBICs of the 7S4280‐19 and 2S4082‐25
(“
Connecting Fiber‐Optic Cables to Mini‐GBICs ” on page 4‐11).
Connecting UTP Cables to the 2S4082-25
The fixed RJ45 front panel connections of the 2S4082‐25 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.
1 N1 Chassis slot 5 Metal back panel
2 FTM2 backplane connectors 6 Upper locking tab (shown in closed position)
3 NAC Controller PEP card 7 Lower locking tab (shown in closed position)
4 Card guides
Note: If the NAC Controller PEP 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-Diamond/Platinum Series Configuration Guide for the configuration information. For details on
how to obtain manuals, refer to the “
Related Documents” on page xvi .
Note: All RJ45 front panel ports on the 2S4082-25 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.