Cabletron Systems 3H08-04 Manuale Utente
Chapter 1:
Introduction
Page 1-4
FE Switch Module User Guide
1.3.1 Connectors
The 3H02-04 includes four 8-pin RJ45 receptacle connectors that you can
attach directly to the network by using unshielded twisted-pair (UTP)
cabling. The ATX power supply provides the power for the module.
attach directly to the network by using unshielded twisted-pair (UTP)
cabling. The ATX power supply provides the power for the module.
1.3.2 LEDs
The 3H02-04 contains a total of 14 green LEDs labeled LINK, RX, and
TX for each segment, plus PROC and PWR for the module. The LEDs are
described in Chapter 5 of this manual.
TX for each segment, plus PROC and PWR for the module. The LEDs are
described in Chapter 5 of this manual.
1.3.3 Offline Button
Use the offline button before swapping the module, to take it offline until
the replacement is installed.
the replacement is installed.
Figure 1-2
3H02-04 Front Panel
NOTE
An internal receive/transmit pair crossover is provided in the
second connector on each port. This means that when either a
station or server is directly attached to a 3H02-04 port, you can
choose to use either straight-through or crossover cabling. For
more cabling and crossover information, see Appendix B.
second connector on each port. This means that when either a
station or server is directly attached to a 3H02-04 port, you can
choose to use either straight-through or crossover cabling. For
more cabling and crossover information, see Appendix B.
OFFLINE
RX
LK
TX
QUAD FAST ETHERNET / 802.3 100BASE-TX (UTP)
X
X
X
X
SEGMENT 4
SEGMENT 3
SEGMENT 2
SEGMENT 1
RX
LK
TX
RX
LK
TX
RX
LK
TX
PROC
PWR
Offline button
Status LEDs
RJ45 Connectors