Cabletron Systems BRIM E100 BRIM-E100 - Manual (Page 27)

Chapter 4: Connecting to the Network
Page 4-2 BRIM-E100 User’s Guide
Figure 4-1 FE-100TX Crossover Switch
Connect an FE-100TX to a twisted pair segment as follows:
1. Connect the twisted pair segment to the module by inserting the RJ45
connector on the twisted pair segment into the RJ45 port on the
module. See Figure 4-1.
2. Check that the RX LED on the BRIM-E100 is green or flashing yellow
(refer to Chapter 6). If the LED is off, perform each of the following
steps until it is on:
a. Check that the 100BASE-TX device at the other end of the twisted
pair segment is powered up.
b. Verify that the RJ45 connector on the twisted pair segment has the
proper pinouts.
c. Check the cable for continuity.
d. Check that the twisted pair connection meets dB loss and cable
specifications outlined in Chapter 2, Section 2.1.
e. Check that the crossover switch is in the correct position.
If a link is not established, contact Cabletron Systems Technical Support.
POSITION =
(
NOT CROSSED OVER
)
1. TX+
2. TX-
3. RX+
4. NC 5. NC
6. RX-
7. NC
8. NC
POSITION X
( CROSSED OVER )
1. RX+
2. RX-
3. TX+
4. NC 5. NC
6. TX-
7. NC
8. NC
FE-100TX
10
166505
100
x =
book Page 2 Friday, April 19, 1996 9:53 AM