Enterasys Networks BRIM-E6 manual Appendix B Epim Cable Requirements

APPENDIX B

EPIM CABLE REQUIREMENTS

This appendix describes cable specifications and requirements for the EPIMs. Your network must meet the requirements and conditions specified in this chapter to obtain satisfactory performance from this equipment. Failure to follow these guidelines could result in poor network performance.

B.1 CABLE REQUIREMENTS

The Ethernet Port Interface Modules (EPIMs) let you expand your network using UTP, STP, Multimode Fiber Optic, Single Mode Fiber Optic, Thin Coaxial, or AUI cabling.

Take care in planning and preparing the cabling and connections for your network. The quality of the connections and the length of cables are critical factors in determining the reliability of your network. The following sections describe specifications for each media type.

B.1.1 10BASE-T UTP and STP Cable Requirements

When you connect a 10BASE-T Twisted Pair Segment to the EPIM-T, the device at the other end of the twisted pair segment must meet IEEE 802.3 10BASE-T specifications. Your network must meet the following requirements:

Length

The IEEE 802.3 10BASE-T standard requires that 10BASE-T devices transmit over a 100 meter (328 foot) link using 22-24 AWG unshielded twisted pair wire. However, cable quality largely determines maximum link length. If you use high quality, low attenuation cable, you can achieve link lengths of up to 200 meters. Cable delay limits maximum link length to 200 meters, regardless of the cable type.