Load Sharing: Route Groups and Route Lists

The DSR supports the concepts of routes, Route Groups and Route Lists to provide load balancing. A Route List is comprised of a prioritized list of Peer Nodes, organized into Route Groups for routing messages. Each Route List supports the following configurable information:

A set of Peer Nodes with equal priority within a Route List is called a Route Group. When multiple Route Groups are assigned to a Route List, only one of the Route Groups will be designated as the active Route Group for routing messages for that Route List. The remaining Route Groups in the Route List are referred to as standby Route Groups. The DSR designates the active Route Group in each Route List based on the Route Group's priority and available weight relative to the minimum Route Group availability weight for the Route List. Which Route Group is active at any one time may change when the operational status of Peer Nodes within a Route Group changes or if you change the configuration of either the Route List or the Route Groups in the Route List.

Figure 1 illustrates the relationships between the Route List, Route Groups, and Peer Nodes.

Route List, Route Group, and Peer Node Relationships