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Virtual Servers Overview
This section includes the following topics:
•
Types of Virtual Servers
•
IP-Address-Based Virtual Servers
•
URL-Host-Based Virtual Servers
•
Default Virtual Server
Types of Virtual Servers
In previous versions of Enterprise Server, there were two kinds of virtual servers:
hardware and software. Hardware virtual servers had unique IP addresses
associated with them. Software virtual servers did not have unique IP addresses
but instead had unique URL hosts.
Beginning with Enterprise Server 6.0, these concepts are no longer quite accurate.
All virtual servers have a URL host specified. However, the virtual server may also
be associated with an IP address based on its listen socket and connection group
information.
When a new request comes in, the server determines which virtual server to send it
to based on the IP address or the value in the Host header. It evaluates the IP
address first. For more information, see "Virtual Server Selection for Request
Processing," on page 252.
IP-Address-Based Virtual Servers
In order to have multiple IP addresses on a single computer, you must either map
them through the operating system or provide additional cards. To set up multiple
IP addresses through the operating system, use the Network Control Panel
(Windows NT/Windows 2000) or the
that directions for using
operating system documentation for more information.
Typically you create an IP-address-based virtual server by creating a listen socket
that listens on any IP address, and creating additional connection groups for each
listen socket. Each of these connection groups has a specific IP address. You then
associate a virtual server as the default virtual server for each connection group.
However, you can also create an individual listen socket for each IP address. For
more information on ways to deploy virtual servers, see "Deploying Virtual
Servers," on page 265.
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Netscape Enterprise Server Administrator's Guide • August 2002
ifconfig
vary from platform to platform. Consult your
ifconfig
utility (UNIX/Linux). Please note
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