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Web OS 10.0 Application Guide
IP Proxy for Non-HTTP Redirects
Typically, client requests for HTTP applications are automatically redirected to the location
with the best response and least load for the requested content. This is because the HTTP proto-
col has a built-in redirection function that allows requests to be redirected to an alternate site.
If a client requests a non-HTTP application such as FTP, POP3, or SMTP, then the lack of a
redirection function in these applications requires that a proxy IP address be configured on the
client port. The client port will initiate a redirect only if resources are unavailable at the first site.
N
OTE
topologies where the remote servers are usually virtual server IP addresses in other Alteon
Web switches.
Figure 12-3
ment.
Non HTTP Applications
Web
Servers
Figure 12-3 HTTP and Non-HTTP Redirects
n
304
Chapter 12: Global Server Load Balancing
–
This feature should be used as a method of last resort for GSLB implementations in
illustrates the packet-flow of HTTP and non-HTTP redirects in a GSLB environ-
HTTP Applications
Site 1
Web Switch
DNS
Client Site
DNS
DNS
Request
1a
1b
2a
2b
Internet
Site 2
DNS
Web Switch
Servers
Proxy IP address is
configured on Client
port for non-HTTP
applications.
212777-A, February 2002
Web
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