Cabletron Systems 2E43-51R manual Connecting a UTP Segment to the FE-100TX

Connecting to the Network

3.Tighten the two screws on the RJ21 straight cable connector or RJ21 angle adapter, as applicable, to secure it to the device.

NOTE

The cable pinouts for a 25 pair cable (RJ21) can be found in the Cabletron Systems Cabling Guide. Refer to Section 1.7 for details on how to obtain this document.

4.If using the RJ21 angle adapter, plug in the RJ21 right-angled connector until the two retaining clips, shown in Figure 3-7, snap into place.

5.Verify that a link exists by checking that the LINK LED on the

2E43-51 for that port is on (solid green). If the LINK LED is off, perform the following steps until it is on:

a.Verify that the 10BASE-T device at the other end of the twisted pair segment is on and connected to the segment.

b.Verify that all connectors on the twisted pair segment have 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 Cabletron Systems Global Call Center. Refer to Section 1.6 for details.

6.Repeat steps 1 through 4 above, until all connections have been made.

3.5.2Connecting a UTP Segment to the FE-100TX

The FE-100TX supports Category 5 UTP cabling, which has an impedance of 85 to 11 ohms.

An FE-100TX installed in port slot 5 and/or 6 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 3-8to 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 3-8to the straight-through position (not crossed over), marked with =.

2E43-51/2E43-51R User’s Guide 3-11