SteelHeadā„¢ Deployment Guide : Topology : Introduction to the Topology Concept
  
Introduction to the Topology Concept
A topology consists of networks and sites. Path selection, QoS, and secure transport can use a common topology that you configure once, and then the topology simplifies configuration by providing a building block that you can reuse.
The information contained in the topology definition is used by RiOS to perform certain functions like path monitoring or bandwidth calculation for QoS without requiring further input. The topology provides the SteelHead with:
  • which networks it is connected to.
  • which of its interfaces are used to connect to these networks.
  • how much bandwidth is available.
  • which networks to use to connect to a SteelHead at a remote sites.
  • how much bandwidth is available to send traffic to a remote site.