22-12 Riverstone Networks RS Switch Router User Guide Release 8.0
Load Balancing
Web Hosting Configuration
The following is an example of how to configure a simple verification check where the RS will issue an HTTP
command to retrieve an HTML page and check for the string “OK”:
The
read-till-index
option is not necessary if the file test.html contains “OK” as the first two characters. The
r
ead-till-index
option is helpful if the exact index of the
acv-reply
string in the file is not known to the user. In
the above example, the RS will search from the beginning of the file up to the 25th character for the start of the string
“OK.”
Web Hosting with Multiple Virtual Groups and Multiple Destination Servers
In the following example, three different servers are used to provide different services for a site.
Figure 22-3 Load balancing with multiple virtual groups
load-balance set group-options abccompany-www acv-command “GET /test.html” acv-reply
“OK” read-till-index 25
Domain Name
Virtual IP
TCP Port
Real Server IP
TCP Port
www.quick.com
207.135.89.16
80
10.1.1.1
80
ftp.quick.com
207.135.89.16
21
10.1.1.2
21
smtp.quick.com
207.135.89.16
25
10.1.1.3
25
*
4J*
'
J*
')J*
&>* .
J*
0
)J*
')J*
)J*
