Quick Installation Guide
CheetaHub Power-3016G/3024G
1
Contents
Introduction
1
Package Contents
1
Description of Hardware
1
Mounting the Hub
2
Stacking Hubs on a Flat Surface
2
Mounting Hubs in a Rack
2
Connecting the Hub System
2
Making a Connection via an RJ-45 Port
2
Making a Connection via an MDI Daisy-Chain port
3
Powering On the Hub
4
Verifying Port Status
4
Verifying System Operation
4
Applications
4
Product Specifications
5
Repeater Criteria
5
Internal Switching Criteria
6
Troubleshooting
6
Diagnosing Hub Indicators
6
Power and Cooling Problems
6
Cabling and Adapters
6
Installation
7
Port and Cable Assignments
7
RJ-45 Port Description
7
EMI Certification
7
FCC Class A (USA)
7
Class A (Canada Department of Communications)
7
VCCI Class A Compliance (Japan)
8
BCIQ Class A Compliance (Taiwan)
8
CE Mark Declaration of Conformance (for EMI and Safety - Europe)
8
Safety Compliance
8
Underwriters Laboratories Inc. (USA)
8
Wichtige Sicherheitshinweise (Germany)
9
Warranty
9
Introduction
The CheetaHub Power-3016G/3024G provides 16 (24) RJ-45
ports that automatically adjust to the speed of the attached
device (for 10 Mbps Ethernet or 100 Mbps Fast Ethernet
connections). These dual-speed hubs contain two internal
repeater buses one for 10 Mbps traffic and another for 100
Mbps traffic. Traffic passing between attached devices that
operate at the same speed is confined within the appropriate
repeater bus. But when traffic must pass between 10 and 100
Mbps devices, when the destination address is not found in the address table, or
broadcast traffic is sent, data is forwarded to the other repeater bus via an internal
10/100 Mbps switch.
These hubs provide an ideal bridge between 10 and 100 Mbps Ethernet networks, all
for a price that's comparable to a standard Ethernet or Fast Ethernet hub. Moreover,
the smart design built into the display panel provides a friendly interface that
simplifies installation and network troubleshooting.
Package Contents
CheetaHub Power-3016G (Model No. EH3016G)
Fast Ethernet dual-speed hub with 16 10/100 Mbps ports, and internal switching
or
CheetaHub Power-3024G (Model No. EH3024G)
Fast Ethernet dual-speed hub with 24 10/100 Mbps ports, and internal switching
Four rubber foot pads
Quick Installation Guide
Rack mount bracket kit
Owner registration card
AC power cord
Description of Hardware
These hubs provide 16 (24) dual-speed ports (10/100 Mbps). Each port
automatically senses the speed of the attached device, and channels data to the
appropriate repeater bus. The learning function of the hub stores the node address
and corresponding segment number (i.e., bus 1 or 2) of each incoming packet in a
routing table. If the source and destination node operate at different speeds, this
information is subsequently used to pass traffic to the segment containing the
destination node via a 2-port switch that connects the two repeater buses. By
confining traffic to its respective collision domain, and only forwarding traffic to the
other segment when required, the overall load on the network is significantly reduced.
These hubs provide a friendly design that simplifies installation and network
troubleshooting. The following figure shows the components of the EH3024G:
