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S12700 V200R010C00 Configuration Guide - QoS

This document describes the configurations of QoS functions, including MQC, priority mapping, traffic policing, traffic shaping, interface-based rate limiting, congestion avoidance, congestion management, packet filtering, redirection, traffic statistics, ACL-based simplified traffic policy, and HQoS.
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How Does the Switch Match Packets When Multiple Pairs of Traffic Classifiers and Traffic Behaviors Are Defined in a Traffic Policy?

How Does the Switch Match Packets When Multiple Pairs of Traffic Classifiers and Traffic Behaviors Are Defined in a Traffic Policy?

When creating a traffic policy, you can specify the matching order of rules in the traffic policy. The matching order falls into the configuration order and automatic order.

For the X series cards: No matter whether the matching order is set to the configuration order or automatic order, the matching order depends on priorities of traffic classifiers, that is, the precedence precedence-value parameter in the traffic classifier classifier-name [ operator { and | or } ] [ precedence precedence-value ] command. A smaller value represents a higher priority.

For other cards except the X series cards:

  • config: The matching order depends on priorities of traffic classifiers, that is, the precedence precedence-value parameter in the traffic classifier classifier-name [ operator { and | or } ] [ precedence precedence-value ] command. A smaller value represents a higher priority.
  • auto: The matching order depends on priorities of traffic classifier types. The traffic classifiers based on the following information are in descending order of priority: Layer 2 and IPv4 Layer 3 information, advanced ACL6 information, basic ACL6 information, Layer 2 information, IPv4 Layer 3 information, and user-defined ACL information. As long as actions in traffic behaviors do not conflict, all matching traffic classifiers and traffic behaviors take effect. If actions in traffic behaviors conflict, the traffic classifier and traffic behavior with the highest priority of traffic classifier type takes effect.
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Updated: 2019-08-21

Document ID: EDOC1000142089

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