Cabletron Systems DLE22-MA - Manual (Page 42)

Chapter 2: Network Requirements
2-2 DLE22-MA, DLE32-MA, DLE23-MA and DLE33-MA User’s Guide
2.2 10BASE-T NETWORK
When connecting a 10BASE-T segment to any of the DLE2X-MA and
DLE3X-MA ports (Interfaces 1 through 24), ensure that the network
meets the Ethernet network requirements of the IEEE 802.3 standard for
10BASE-T. Refer to the Cabletron Systems Cabling Guide for details.
2.3 100BASE-TX NETWORK
The DLE2X-MA, with an DELTX-UI installed in ports 25 and 26,
provides an RJ45 connection that supports UTP cabling. 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
Ports 25 and 26 of the DLE2X-MA support the DELFX-UI and
DELF3-UI 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 Mode 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.
The DLE2X-MA with an DELTX-UI installed is capable of
operating at either 10 or 100 Mbps. The DELTX-UI can
automatically sense the speed of the other device and adjusts
its speed accordingly.