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Class Map Definition: Class Map is a component of Cisco's modular QoS CLI used to define traffic matching criteria in order to classify and differentiate types of network traffic for quality of service (QoS) policies.
A Class Map is a component of network security devices, such as firewalls and routers, used to classify and categorize network traffic based on specific criteria like protocols, source or destination IP addresses, or port numbers. Class Maps are configured to help network administrators effectively manage and control network traffic flow by applying policies and security rules to different classes of traffic. This classification allows for more granular control and enforcement of security policies within a network environment.