The Common Open Policy Service (COPS) Protocol is part of the internet protocol suite as defined by the IETF's RFC 2748. COPS specifies a simple client/server model for supporting policy control over Quality of Service (QoS) signaling protocols. Policies are stored on servers, also known as Policy Decision Points (PDP), and are enforced on clients, also known as Policy Enforcement Points (PEP).

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  • The Common Open Policy Service (COPS) Protocol is part of the internet protocol suite as defined by the IETF's RFC 2748. COPS specifies a simple client/server model for supporting policy control over Quality of Service (QoS) signaling protocols. Policies are stored on servers, also known as Policy Decision Points (PDP), and are enforced on clients, also known as Policy Enforcement Points (PEP). There are two models of COPS: The Outsourcing Model and the Provisioning Model, considered from the view of the client or PEP. The Outsourcing Model is the simplest COPS implementation. In this model, all policies are stored at the PDP. Whenever the PEP needs to make a decision, it sends all relevant information to the PDP. The PDP analyzes the information, makes the decision, and relays it to the PEP. The PEP then simply enforces the decision. In the Provisioning Model, see RFC 3084 COPS Usage for Policy Provisioning (COPS-PR), the PEP reports its decision-making capabilities to the PDP. The PDP then downloads relevant policies on to the PEP. The PEP can then make its own decisions based on these policies. The Provisioning Model uses the Policy Information Base as a repository of the policies. The COPS-MAID Internet Draft introduces QoS extensions to the protocol for Multi-Access environment. See for links to some COPS implementations.
  • Der Common Open Policy Service (COPS) ist die “Sprache der Router”. Router müssen sich untereinander koordinieren, ob sie einem RSVP Request (zeitlich begrenzte Reservierung einer bestimmten Mindestbandbreite) entsprechen können oder nicht. Es ist also möglich, dass Policy-Daten zwischen einem Policy-Client (Policy Enforcement Points, PEPs = anfragender Router) und einem Policy-Server (Policy Decision Point, PDP = angefragter Router) ausgetauscht werden können (Das Resource Reservation Protocol muss bei Client und Server implementiert sein).
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  • The Common Open Policy Service (COPS) Protocol is part of the internet protocol suite as defined by the IETF's RFC 2748. COPS specifies a simple client/server model for supporting policy control over Quality of Service (QoS) signaling protocols. Policies are stored on servers, also known as Policy Decision Points (PDP), and are enforced on clients, also known as Policy Enforcement Points (PEP).
  • Der Common Open Policy Service (COPS) ist die “Sprache der Router”. Router müssen sich untereinander koordinieren, ob sie einem RSVP Request (zeitlich begrenzte Reservierung einer bestimmten Mindestbandbreite) entsprechen können oder nicht.
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  • Common Open Policy Service
  • Common Open Policy Service
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