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Cisco® Field Manual: Catalyst® Switch Configuration by Steve McQuerry, Dave Hucaby

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13-4. QoS Management

  • Common Open Policy Service (COPS)— The protocol that communicates QoS policies and enforcement between devices on a network.

    COPS management is supported on the Catalyst 6000 COS switch family with a Layer 3 switching engine (PFC or PFC2).

  • Policy Decision Point (PDP)— Maintains QoS policies and rules that will be enforced within the network. Traffic conditions can be polled and can affect how the policies are implemented. A typical PDP might be a host running Cisco QoS Policy Manager (QPM).

  • Policy Enforcement Point (PEP)— A device consisting of physical interfaces, controlled by a PDP. QoS policies are sent down to a PEP, where they are enforced in a granular fashion. Typical PEPs are routers and switches.

    COPS configures ...

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