User`s guide

SEH USER’S GUIDE 2-1
CHAPTER 2
INSTALLATION
REQUIREMENTS/SPECIFICATIONS
This chapter describes network guidelines, power requirements, and
operating specifications for the SEH. Be sure to read this chapter before
you install the SEH. The 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.
2.1 CABLE SPECIFICATIONS
The SEH-22 and SEH-24 network ports support Shielded Twisted Pair
(STP) and Unshielded Twisted Pair (UTP) cabling.
Ethernet Port Interface Modules (EPIMs) expand a network using UTP,
STP, Multimode Fiber Optic, Single Mode Fiber Optic, or Thin Coaxial
cabling. For information concerning EPIMs, refer to Appendix A. The
rear panel Interconnect Bus Ports support Cabletron Systems HubSTACK
Interconnect cables for stackable applications.
Take care in planning and preparing the cabling and connections for the
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.
2.1.1 HubSTACK Interconnect Cable Requirements
Connect units in the stack with HubSTACK Interconnect cables. Refer to
Chapter 1 for cable part numbers. The cables attach to the SEH rear panel
bus ports.
The rear panel of the SEH has an SEH Interconnect Bus Out Port (male
connector) and an SEH Interconnect Bus In Port (female connector). The
bus supports five stackable devices.
SEH Book Page 1 Tuesday, March 19, 1996 4:12 PM