Cabletron Systems 6H133-37, Руководство пользователя

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Connecting to the Network
6H123-50 and 6H133-37 User’s Guide 3-7
3. Tighten the two screws on the RJ21 connector, as applicable, to secure
it to the module.
4. Verify that a link exists by checking that the port Link LEDs are on
(flashing amber, blinking green, or solid green). If any of the Link
LEDs are off, perform the following steps until they are 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 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 the Cabletron Systems Global Call
Center. Refer to
Section 1.6 for details.
5. Repeat steps 1 through 5, above, until all RJ21 connections are made.
3.5.2 Connecting a Twisted Pair Segment to the
FE-100TX
An FE-100TX installed in slot 5 and/or 6 of the 6H123-50 has an internal
crossover switch. When connecting a workstation, use a straight-through
cabling and set the Fast Ethernet Interface Module crossover switch
shown in
Figure 3-3 to the crossed over position marked 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 3-3 to the not crossed over
position, marked with =.
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.
NOTE
To ensure proper operation, use only Category 5 Unshielded
Twisted Pair (UTP) cabling that has an impedance between 85
and 111 ohms.