Cabletron Systems NBR-420, NBR-220, NBR-620 manual Appendix C Network Planning And Configuration

APPENDIX C

NETWORK PLANNING AND CONFIGURATION

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

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C AUT IO N

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

C.1 NETWORK CABLE 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 below that apply to your specific network configuration.

C.1.1 10BASE-T Twisted Pair Network

When connecting a 10BASE-T Twisted Pair Segment to 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 maximum link length to 200 meters, regardless of the cable type.

NBR-SERIES Installation Guide Page C-1