Cabletron Systems 2H23-50R 사용자 설명서

Chapter 3: Installation

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.

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

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

Check that the twisted pair connection meets the dB loss and cable 
specifications outlined in 

.

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

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

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 

 to 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 

position (not crossed over), marked with =.

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