Details the processes and techniques for sorting network traffic into specific categories based on predefined criteria to implement QoS policies. It covers classification stages, hardware systems like TCAM, and the impact of DiffServ tunneling modes on traffic handling.
Packet classification
Introduces packet classification as a process to sort network traffic into categories using predefined criteria and traffic descriptors. It explains how identifying traffic types like voice or video ensures that flows meet performance metrics through appropriate QoS handling and resource allocation.
Packet classification systems on your router
Details the two packet classification systems used by the router to determine traffic marking and policy application. It compares the use of QoS maps and TCAM based on traffic direction and specific match conditions configured in the policy.
DiffServ tunneling modes
Explains how DiffServ tunneling modes define the interpretation of inner and outer QoS markings as packets traverse a network core. It describes the behavior of Uniform, Pipe, and Short-Pipe modes in maintaining or isolating service differentiation across network domains.
Short-pipe mode
Details the short-pipe tunneling mode, which uses the inner IP DSCP value to determine packet treatment at the egress router after MPLS decapsulation. It outlines best practices and configuration steps to preserve end-to-end service differentiation for VPN and tunneled traffic.
Traffic classes in QoS
Introduces traffic classes used for QoS enforcement, including match criteria, match logic, supported match types, and default class behavior for packets that do not match configured conditions.
Elements and supported actions of a traffic policy
Outlines the structure and components of a traffic policy, including class associations, order of evaluation, and supported QoS actions. It details valid combinations of marking, policing, and shaping actions based on traffic direction to ensure correct policy configuration.
Benefits of increased egress policy class-map scale
Enables granular traffic classification, scalable policy design, and improved visibility for complex egress traffic-management deployments.
Configure packet classification and specify QoS actions
Provides instructions for classifying network traffic into user-defined classes and applying Quality of Service actions like traffic shaping. This process helps manage bandwidth and prioritize specific traffic flows on an interface using class maps and policy maps.
Enhanced Running Configuration Display for Policy Maps and Class Maps
Introduces the enhanced running configuration display feature, which improves the readability of QoS configurations by showing class maps and policy maps on separate lines. It explains how using specific CLI commands aids in the verification and troubleshooting of complex policy structures.
Multicast traffic scheduling on egress queues
Describes the multicast traffic scheduling feature, which enables granular control of multicast data by applying egress queuing parameters such as shaping and priority. It explains how scheduling occurs during the second pass of egress processing to ensure efficient handling for different receivers.
QoS policy inheritance
Explains the QoS policy inheritance feature, which allows a single policy applied to a main interface to be automatically enforced on all attached subinterfaces. It describes how this model simplifies configuration management and provides cumulative statistics for the entire interface hierarchy.