Modular QoS Configuration Guide for Cisco 8000 Series Routers, Cisco IOS XR Release

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Modular QoS Configuration Guide for Cisco 8000 Series Routers, Cisco IOS XR Release

Benefits of increased egress policy class-map scale

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Enables granular traffic classification, scalable policy design, and improved visibility for complex egress traffic-management deployments.


The ability to configure up to 16 class maps in an egress QoS policy provides these benefits:

  • Improves granular traffic differentiation by allowing you to classify and apply QoS actions to a larger number of egress traffic flows within a single policy.
  • Simplifies QoS policy design by reducing the need to distribute traffic classes across multiple policy maps or interfaces.
  • Enables scalable service-provider QoS deployments that require distinct treatment for multiple customer, application, or transport traffic classes on high-density interfaces.
  • Improves operational visibility by allowing policy statistics and counters to track a larger number of classified egress traffic classes within the same policy-map instance.
  • Reduces configuration overhead by consolidating complex egress classification requirements into fewer QoS policy definitions.
  • Supports advanced congestion-management and traffic-engineering deployments that require fine-grained egress queue assignment and packet treatment.
  • Enhances deployment flexibility by enabling larger egress QoS policy designs without changing the existing MQC-based policy framework.