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Аб в, Rx tx – Enterasys Networks Enterasys Gold Distributed Forwarding Engine 4H4285-49 User Manual

Page 42

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Connecting to the Network

3-14 Installation

To connect and verify UTP cable connections to RJ45 ports 1 through 48, refer to 

Figure 3‐4

 

and proceed as follows:

1.

Ensure that the device connected to the other end of the segment is powered ON.

2.

Insert the RJ45 connector on the twisted pair segment into the appropriate RJ45 port 
connector. 

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 for less than one second (see 

Figure 3‐4

) to step to the 

group of interest (Groups 1 through 4). 

b. Each time the GROUP SELECT button is pressed for less that one second, 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.

Figure 3-4 Connecting a Twisted Pair Segment with RJ45 Connector

1 RJ45 cable connector

2 RJ45 port connector

3 GROUP SELECT button

Note: If the RX and TX LEDs of a port do not indicate a link and the end-point device is a
PD, you may have a port without 48 Vdc to operate the PD. To check the PoE Port Status,
refer to

“Verifying PoE Port Status”

on page 3-17.

1

2

3

4

1X

G

R

O

U

P
1

11X

OFFLINE/

RESET

COM

CPU

MGMT

GROUP

SELECT

GROUP

1

2

3

4

5

6

7

8

9

10

11

12

POE

12 X

1

2

3

4

4H4285-49

FAST ENET

RX

TX

А

Б

В

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