BSCI Exam Cram™ 2 (Exam 642-801)

Cisco Policy-based Routing

Policy-based routing was introduced to Cisco administrators in IOS release 11.0 and affords network load-sharing capacities and traffic shaping by letting you have granular control of the movement of network traffic through a router. For instance, you can generate a route map that sends high-bandwidth, high-priority traffic through a high-speed interface, while sending the rest of the network traffic through a lower-bandwidth interface. Policy-based routing can also enable you to flag packets with different TOS (type of service) values so that specific types of traffic can be given special treatment. ISPs, for example, deploy policy-based routing to control different Internet links over policy routers. Quality of service ...