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Campus Distribution (Cisco Catalyst 4500) QoS Design

  • Sample Chapter is provided courtesy of Cisco Press.
  • Date: Jan 22, 2014.

Contents

  1. Cisco Catalyst 4500 QoS Architecture
  2. QoS Design Steps
  3. Queuing Models
  4. Additional Platform-Specific QoS Design Options
  5. Summary
  6. Further Reading

Chapter Description

This chapter discusses the best-practice QoS design recommendations for the Cisco Catalyst 4500 (Supervisor 6-E/7-E) series switch in the role of a campus distribution layer switch.

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QoS Design Steps

While there are two explicit QoS policy requirements of a distribution switch (namely to trust DSCP on ingress and queuing policies), because of the default QoS settings on MQC-based platforms there is effectively only a single step to configuring QoS on a Catalyst 4500 in this role:

  1. Configure the ingress QoS model—which is recommended to be DSCP trust (and which is enabled by default on all MQC-based platforms).

    NOTE

    This step may include ingress queuing policies on platforms which support this feature (however, the Catalyst 4500 does not support ingress queuing).

  2. Configure egress queuing.
3. Queuing Models | Next Section Previous Section

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