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Chapter 12: Web Hosting Configuration Guide
Load Balancing
You can use the load balancing feature on the IA to distribute session load across a group
of servers. If you configure the IA to provide load balancing, client requests that go
through the IA can be redirected to any one of several predefined hosts. With load
balancing, clients access servers through a virtual IP. The IA transparently redirects the
requests with no change required on the clients or servers; all configuration and
redirection is done on the IA.
Configuring Load Balancing
The following are the steps in configuring load balancing on the IA:
1.
Create a logical group of load balancing servers and define a virtual IP for the group.
2.
Define the servers in the group.
3.
Specify optional operating parameters for the group of load balancing servers or for
individual servers in the group.
Creating the Server Group
To use load balancing, you create a logical group of load balancing servers and define a
virtual IP for the server that the clients will use to access the server pool.
To create the server group and define the virtual IP for the server, enter the following
command in Configure mode:
Create group of load balancing
servers.
Create a range of load balancing
server groups.
196
load-balance create group-name
name>
virtual-ip
<port number>
protocol tcp|udp
persistence-level tcp|ssl|vpn|sticky
load-balance create vip-range-name
name>
vip-range
<port number>
protocol tcp|udp
persistence-level tcp|ssl|vpn|sticky
Internet Appliance User Reference Manual
<group
<ipaddr>
virtual-port
<range
<range>
virtual-port
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