Siebel System Administration Guide > Structure of the lbconfig.txt File >

About the lbconfig.txt File

The load balancing configuration file (lbconfig.txt) provides information about which Siebel Servers will be load-balanced. Its default location is SWSE_ROOT\Admin where SWSE_ROOT is the installation directory for the Siebel Web Server Extension.

For information about generating the load balancing configuration file, see the Siebel Installation Guide for the operating system you are using.

The load balancing configuration file has two parts:

• Session Manager Rules. The first section contains virtual server definitions used by load balancing for Siebel CRM. These definitions map a virtual server name to one or more physical platforms on which Siebel Servers are running. Entries can be edited to create additional virtual servers. Load balancing is managed internally by the load balancing module in the Siebel Web Server Extension (SWSE).
• Third-Party HTTP Load Balancer Rules. The second section is provided as a guide for creating routing rules for third-party HTTP load balancers. This section lists a series of Uniform Resource Locators (URLs) that provide a path to Application Object Managers (AOMs). These URLs are included in the HTTP header of SISNAPI messages sent from the Siebel Web Server Extension (SWSE) to the load balancer. They are based on the object manager connect strings located in the Siebel Web Server Extension (SWSE) configuration file (eapps.cfg).

  The entries map these URLs to Siebel Servers where the AOMs are located. The URL and server mapping together can be used to write routing rules for the load balancer. The mapping includes the port number of the SCBroker running on the Siebel Server. SCBroker receives server requests and distributes them to AOMs running on the server.

  These entries are listed in three groups:

  • Component Rules. This group lists the servers to use for initial connection requests. The path includes the names of all the servers running the Application Object Manager.
  • Server Rules. This group lists the servers to use for server reconnection requests.
  • Round-Robin Rules. This group lists the servers to use for retry requests. The URL for these retry requests includes the string RR. There is no significance to the order of the servers in the rule. The third-party HTTP load balancer determines the order in which servers are retried.