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Load balancing allows an application to be published for execution on any of
several Citrix servers in a server farm. When a published application or desktop
session configured for multiple servers is launched from a Citrix ICA Client, load
balancing selects which server will run the application or desktop session based on
server load. You can tune how load balancing calculates server load for each
server in a server farm using the Load Balancing Administration utility.
The Citrix ICA Client contacts the master ICA Browser to find the address of a
server containing the published application. The master ICA Browser maintains a
list of servers configured to run the published application. The master browser
selects one of the servers based on load and returns the address of that server to
the Citrix ICA Client. Each server calculates a separate load level for each
network protocol (IPX, TCP/IP, and NetBIOS).
Load balancing supports mixing W
INFRAME 1.7 or later and MetaFrame servers in
a single server farm. Load-balanced applications must be installed on each server
in the farm.
Use Published Application Manager to configure published applications. See
Chapter 5, “Publishing Applications,” for more information.
Load balancing is available only when a copy of Citrix Load Balancing
Services has been installed on each server that will participate in load balancing.
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Published applications allow a user to run applications or access a desktop session
without knowing the name or address of a particular server. If the published
application is located on a single server, the user can disconnect and reconnect to
the same session.
If the published application is configured to run on multiple servers in a server
farm, the user must be reconnected to the same server in the server farm to
reconnect to his or her session. The ICA Browser can reconnect the user to his or
her previous session on the same server under certain conditions.
When the user attempts to reconnect to the published application, the ICA Client
queries the master ICA Browser for the address of the published application. The
master ICA Browser checks the list of disconnected sessions. If it finds a
disconnected session from the same ICA Client, it returns the address of the server
with the disconnected session.
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