Enterasys Networks 5H102-48 - Manual (Page 30)

Connecting to the Network
3-6 Installation
Figure 3-2 Connecting a Twisted Pair Segment to the 5H102-48
3. Verify that a link exists by checking that the port RX (Receive) LED is ON (flashing amber,
blinking green, or solid green). If the RX LED is OFF and the TX (Transmit) LED is not
blinking amber, perform the following steps until it is on:
a. To view the receive and transmit activity on a group of segments, press the GROUP
SELECT button (see Figure 3-2 ) to step to the group of interest (Groups 1 through 4). Each
time the GROUP SELECT button is pressed, the GROUP LED lights up in sequence,
indicating which Group is selected. The receive and transmit activity for that group of
segments is then indicated by the RX and TX LEDs for each segment.
b. Verify that the cabling being used is Category 5 UTP with an impedance between 85 and
111 ohms. If the port is to operate at 100 Mbps, category 5 cabling must be used.
c. Verify that the device at the other end of the twisted pair segment is on and properly
connected to the segment.
d. Verify that the RJ45 connectors on the twisted pair segment have the proper pinouts
( Figure 3-3 and Figure 3-4 ) and check the cable for continuity. Typically, a crossover cable
is used between hub devices. A straight-through cable is used to connect between switches
or hub devices and an end user (computer).
35861_03
FAST ENET
5H102-48
GROUP
GROUP
SELECT
RESET
COM
CPU
11X
1X
G
R
O
U
P
1
GROUP
Group Select
Button
RX LED
TX LED