Cabletron Systems pmn User Manual

Before installing the 2M46-04R or Fast Ethernet Interface Module, 
review the requirements and specifications referred to in this chapter.

The network installation must meet the guidelines to ensure satisfactory 
performance of this equipment. Failure to follow the guidelines may 
produce poor network performance. 

To connect the 2M46-04R to a network so it can take advantage of the 
SmartTrunk feature, there are certain rules concerning port connections 
and configurations that must be followed for proper operation. Refer to 
the Cabletron Systems SmartTrunk User’s Guide for additional 
information.

The 2M46-04R, with an FE-100TX installed in ports 1 or 2, provides an 
RJ45 connection that supports Category 5 unshielded twisted pair (UTP) 
cabling, with an impedance between 85 and 111 ohms. The device at the 
other end of the twisted pair segment must support IEEE 802.3u 
100BASE-TX Fast Ethernet operations. The cabling between the devices 
must meet the test criteria for a 100BASE-TX link for the devices to 
operate at 100 Mbps. Refer to the Cabletron Systems Cabling Guide for 
details.

The Cabletron Systems 

Cabling Guide and SmartTrunk User’s 

Guide, referred to in the following sections, can be found on the 
Cabletron Systems World Wide Web 
site: http://www.cabletron.com/

The 2M46-04R 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.