Cisco Systems SRW248G4P User Manual
Connecting the Switch
48-Port 10/100 + 4-Port Ggabt Swtch wth WebVew and Power over Ethernet
Chapter
Chapter :
Connectng the Swtch
Connectng the Swtch
Overview
This chapter will explain how to connect network devices
to the Switch . The following diagram shows a typical
network configuration .
to the Switch . The following diagram shows a typical
network configuration .
Internet
Cable ./DSL
Modem
Router
Wireless
Access Point
Desktop
Notebook
Server
Typical Network Configuration
When you connect your network devices, make sure you
don’t exceed the maximum cabling distances, which are
listed in the following table:
don’t exceed the maximum cabling distances, which are
listed in the following table:
Maxmum Cablng Dstances
From
To
Maxmum Dstance
Switch
Switch or Hub
100 meters (328 feet)
Hub†
Hub
5 meters (16 .4 feet)
Switch or Hub†
Computer
100 meters (328 feet)
A hub refers to any type of 100Mbps hub . A 10Mbps hub connected
to another 10Mbps hub can span up to 100 meters (328 feet) .
to another 10Mbps hub can span up to 100 meters (328 feet) .
†
Pre-Installation Considerations
Fast Ethernet Considerations
If you are using the Switch for Fast Ethernet (100Mbps)
applications, you must observe the following guidelines:
applications, you must observe the following guidelines:
Full-Duplex Considerations
The Switch provides full-duplex support for its RJ-45
ports . Full-duplex operation allows data to be sent and
received simultaneously, doubling a port’s potential data
throughput . If you will be using the Switch in full-duplex
mode, the maximum cable length using Category 5 cable
is 328 feet (100 meters) .
ports . Full-duplex operation allows data to be sent and
received simultaneously, doubling a port’s potential data
throughput . If you will be using the Switch in full-duplex
mode, the maximum cable length using Category 5 cable
is 328 feet (100 meters) .
1000BASE-T Cable Requirements
All Category 5 UTP cables that are used for 100Base-TX
connections should also work for 1000Base-T, providing
that all four wire pairs are connected . However, it is
recommended that for all critical connections, or any
new cable installations, Category 5e (enhanced Category
5) or Category 6 cable should be used . The Category
5e specification includes test parameters that are only
recommendations for Category 5 . Therefore, the first
step in preparing existing Category 5 cabling for running
1000Base-T is a simple test of the cable installation to be
sure that it complies with the IEEE 802 .3ab standards .
connections should also work for 1000Base-T, providing
that all four wire pairs are connected . However, it is
recommended that for all critical connections, or any
new cable installations, Category 5e (enhanced Category
5) or Category 6 cable should be used . The Category
5e specification includes test parameters that are only
recommendations for Category 5 . Therefore, the first
step in preparing existing Category 5 cabling for running
1000Base-T is a simple test of the cable installation to be
sure that it complies with the IEEE 802 .3ab standards .
Positioning the Switch
Before you choose a location for the Switch, observe the
following guidelines:
following guidelines:
Make sure that the Switch is accessible and that the
cables can be connected easily .
cables can be connected easily .
Keep cabling away from sources of electrical noise,
power lines, and fluorescent lighting fixtures .
power lines, and fluorescent lighting fixtures .
Position the Switch away from water and moisture
sources .
sources .
To ensure adequate air flow around the Switch, be
sure to provide a minimum clearance of two inches
(50mm) .
sure to provide a minimum clearance of two inches
(50mm) .
Do not stack free-standing Switches more than four
units high .
units high .
Placement Options
There are two ways to physically install the Switch, either
set the Switch on its four rubber feet for desktop placement
or mount the switch in a standard-sized, 19-inch high rack
for rack-mount placement .
set the Switch on its four rubber feet for desktop placement
or mount the switch in a standard-sized, 19-inch high rack
for rack-mount placement .
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