Cabletron Systems 2H33-37R Manual Do Utilizador

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Chapter 2: Network Requirements
2-2
2H23-50R/2H33-37R User’s Guide
2.3
100BASE-TX NETWORK
When connecting a 100BASE-T segment to any ports of CONN 1 
through CONN 4 (2H23-50R), CONN 1 through CONN 3 (2H33-37R), 
or an FE-100TX installed in slot 5 or 6 of the 2H23-50R, the device at the 
other end of the twisted pair segment must meet IEEE 802.3u 
100BASE-TX Fast Ethernet network requirements for the devices to 
operate at 100 Mbps. Refer to the Cabletron Systems Cabling Guide for 
details.
2.4
100BASE-FX FIBER OPTIC NETWORK
Slots 5 and 6 of the 2H23-50R can also support the Cabletron Systems 
FE-100FX and FE-100F3 fiber optic interface modules. The device at the 
other end of the fiber optic segment must meet the 100BASE-FX Fast 
Ethernet network requirements to operate at 100 Mbps. Refer to the 
Cabletron Systems Cabling Guide for details.
Multimode Fiber Optic Cable Length
The maximum multimode fiber optic cable length of a 100BASE-FX 
segment is covered in the Cabletron Systems Cabling Guide
Single Mode Fiber Cable Lengths
The maximum single mode fiber optic length of a 100BASE-FX segment 
may be no more than 5 km between Data Terminal Equipment (DTE to 
DTE) in half duplex mode or 20 km (DTE to DTE) in full duplex mode.
NOTE
The 2H23-50R with an FE-100TX installed is capable of 
operating at either 10 or 100 Mbps. The FE-100TX can 
automatically sense the speed of the other device and adjust 
its speed accordingly. 
If operating at 100 Mbps, each pair in a cable must be 
Category 5 compliant with an impedance of 85 to 111 ohms.