Enforcing Traffic Policy with QoS

Networks generally have basic traffic policy requirements that must be enforced. For instance, service providers provide customers with WAN circuits such as ATM or Frame Relay. These circuits are provisioned with certain service level agreements that the service providers enforce on customers to provide all customers certain service levels. Customers are responsible for making sure that: their network's traffic complies with those agreements by shaping, rate limiting, and pfio^nizing their own traffic with QoS tools supplied in Cisco IOS Software. This section explores these tec hnologies and shows how they can be used to provide QoS to network applications.

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