Cabletron Systems EMM-E6 manual Appendix C Ethernet Cabling Requirements, Network Requirements

APPENDIX C

ETHERNET CABLING REQUIREMENTS

This chapter contains general networking guidelines. Before attempting to install the EMM-E6 or any additional EPIMs or BRIMs, review the requirements and specifications outlined in this chapter.

NOTE

Your network installation must meet the conditions, guidelines, specifications, and requirements included in this chapter to ensure satisfactory performance of this equipment. Failure to follow these guidelines may result in poor network performance.

C.1 NETWORK REQUIREMENTS

Take care in planning and preparing the cabling and connections for your network. The quality of the connections, the length of cables, and other conditions of the installation play critical roles in determining the reliability of your network.

Refer to the sections which follow that apply to your specific network configuration.

C.1.1 10BASE-T Twisted Pair Network

When connecting a 10BASE-T segment to an EMM-E6 (using an EPIM-T), ensure the network meets 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 the maximum link length to 200 meters.

NOTE

Losses introduced by connections at punch-down blocks and other equipment reduce total segment length. For each connector or patch panel in the link, subtract 12 meters from the total length of your cable.

EMM-E6 Installation Guide C-1