Cabletron Systems 2H33-37R, 2H23-50R manual Connecting a UTP Segment to the FE-100TX

Chapter 3: Installation

4.Verify that a link exists on each twisted pair segment of the RJ21 connector by checking that the port Link LEDs above the connector are on (flashing amber, blinking green, or solid green). If any of the Link LEDs are off, perform the following steps to check the associated twisted pair segments. The problem is resolved when the Link LED comes on.

a.Verify that the device at the other end of the twisted pair segment is on and connected to the segment.

b.Verify that the RJ21 connector associated with the twisted pair segment has the proper pinouts and check the cable for continuity.

c.Check that the twisted pair connection meets the dB loss and cable specifications outlined in Chapter 2.

If a link is not established, contact the Cabletron Systems Global Call Center. Refer to Section 1.6 for details.

5.Repeat steps 1 through 5 above, until all connections have been made.

3.5.2Connecting a UTP Segment to the FE-100TX

NOTE

To ensure proper operation, use only Category 5 Unshielded Twisted Pair (UTP) cabling that has an impedance between 85 and 111 ohms.

An FE-100TX installed in slot 5 and/or 6 of a 2H23-50R has an internal crossover switch. When connecting a workstation, use a straight-through cable and set the Fast Ethernet Interface Module crossover switch shown in Figure 3-7to the crossed over position marked with X. When connecting networking devices, such as another bridge, repeater, or router, use a straight-through cable and set the Fast Ethernet Interface Module crossover switch shown in Figure 3-7to the straight-through position (not crossed over), marked with =.

3-10 2H23-50R/2H33-37R User’s Guide