Cabletron Systems SEHI-22FL User Guide

Chapter 5: Connecting to the Network

Connect a fiber optic link segment to an EPIM-F1, EPIM-F2, or an 
EPIM-F3 as follows:

1. Remove the protective plastic covers from the fiber optic ports on the 

applicable port on the module and from the ends of the connectors on 
each fiber strand. 

2. Attach the fiber labeled 1 to the applicable RX port on the module. See 

3. Attach the fiber labeled 2 to the applicable TX port on the module.

4. At the other end of the fiber optic cable, attach the fiber labeled 1 to 

the transmit port of the device.

5. Attach the fiber labeled 2 to the receive port.

6. Check that the EPIM LNK LED is on. If the LED is off, perform the 

following steps until it is on:

a.

Check that the power is on for the device at the end of the link.

b. Verify that the fiber strands are properly crossed over between the 

applicable port on the module and the fiber optic device at the 
other end of the fiber optic link segment.

c.

Verify that the fiber connection meets the dB loss specifications 
outlined in fiber optic network requirements.

If a link is not established, contact Cabletron Systems Technical Support.

SEHI Book  Page 6  Friday, April 19, 1996  10:46 AM