26
C
HAPTER
1: W
EB
C
ACHING
C
ONCEPTS
AND
D
EPLOYMENT
is a grouping of computers with related properties. For example you
might group all computers in your company in the domain
mycompany.com
.
Example
The internet (DNS) name
webcache.mycompany.com
is formed by
combining the Host Name
webcache
with the DNS domain
mycompany.com
.
■
One or more Network Time Protocol (NTP) server addresses
—
for further information, see the
“System Time”
chapter on
page 131
.
This is optional as you can choose to enter the system time manually
instead of using the Network Time Protocol.
■
A Caching Deployment Mode
— for further information, see
“Deployment Modes Overview”
on
page 32
.
■
Caching Port Numbers
— The Caching Port Numbers are the ports
on which the Webcache will listen for traffic. The default number is
8080 for Proxy Cache mode and 80 for Transparent and Inline Cache
modes.
Network
Configuration
Concepts
The following sections explain certain key concepts of configuring your
network, which you must understand in order to set up the Webcache
successfully.
IP Addresses
To operate correctly, each device on your network (for example a
webcache or management station) must have a unique IP address. IP
addresses have the format
nnn.nnn.nnn.nnn
where
n
is a decimal
number between 0 and 255. An example IP address is ‘192.168.100.8’
with a subnet mask of 255.255.255.0.
The IP address can be split into two parts:
■
The first part (‘192.168.100’ in the example) identifies the network on
which the device resides.
■
The second part (‘8’ in the example) identifies the device within the
network.
If your network is internal to your organization only, you may use any
arbitrary IP address. We suggest you use addresses in the series
192.168.100.
X
(where
X
is a number between 1 and 254) with a subnet
mask of 255.255.255.0.
dua1611-5aaa04.book Page 26 Friday, November 29, 2002 8:56 PM
Summary of Contents for SuperStack 3 WEBCACHE 1000
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