Chapter 1 Introduction; Overview; Features - Cabletron Systems DELHF-UA User Manual

1.1

OVERVIEW

The DELHF-UA provides additional connectivity/functionality to various
DIGITAL interface modules and standalone hubs through the use of
FDDI technology. In addition to having a general working knowledge of
Ethernet and IEEE 802.3 type data communications networks and their
physical layer components, you should also understand FDDI networks
and the ANSI X3T9.5 standard prior to installing the DELHF-UA.
The DELHF-UA, shown in Figure 1-1, uses two FPIM (FDDI Port
Interface Module) slots to provide the option of using multimode fiber
optic, single mode fiber optic, unshielded twisted pair, or shielded twisted
pair transceiver ports based on the network requirements.
The DELHF-UA extends the functionality of certain DIGITAL interface
modules or standalone hubs to include high-speed uplink capability. The
DELHF-UA allows remote connectivity using FDDI technology.
1.1.1

Features

Connectivity
The DELHF-UA is equipped with slots for FDDI A and B ports. These
two ports allow connection to the ring as a Dual Attached Station (DAS)
using two FPIMs or as a Single Attached Station (SAS) using one FPIM.
DELHF-UA User's Guide
CHAPTER 1
INTRODUCTION
A
A
Figure 1-1 The DELHF-UA
DELHF-UA
B
B
A
A
P
P
DELHF-UA
B
B
S
S
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209100
1-1