# RAS Connection Broker RAS Connection Broker provides load balancing of published applications and desktops. A RAS Connection Broker is automatically installed on a server on which you install Parallels RAS and is designated as the primary Connection Broker. Each Site must have a primary RAS Connection Broker but can also have secondary Connection Brokers added to it. The purpose of a secondary Connection Broker is to ensure that users do not experience any interruption of the service due to possible failure of the primary RAS Connection Broker. This chapter describes how to add RAS Connection Brokers to a Site and how to configure them. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.parallels.com/landing/ras-admin-guide/parallels-ras-21-administrators-guide/ras-connection-broker.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.