Cabletron Systems Spectrum EMM-E6, Installation Manual

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EMM-E6 Installation Guide C-1
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.
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
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.
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.
ICH1Book Page 1 Tuesday, August 6, 1996 3:06 PM