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Policy-Enabled Path Computation Framework ( draft-bryskin-pce-policy-enabled-path-comp-01.txt )

Policy-Enabled Path Computation Framework ( draft-bryskin-pce-policy-enabled-path-comp-01.txt ). Igor Bryskin (Movaz Networks) : ibryskin@movaz.com. Dimitri Papadimitriou (Alcatel) : dimitri.papadimitriou@alcatel.be. Lou Berger (LabN Consulting, LLC) : lberger@labn.net.

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Policy-Enabled Path Computation Framework ( draft-bryskin-pce-policy-enabled-path-comp-01.txt )

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  1. Policy-Enabled Path Computation Framework(draft-bryskin-pce-policy-enabled-path-comp-01.txt ) Igor Bryskin (Movaz Networks) : ibryskin@movaz.com Dimitri Papadimitriou (Alcatel) : dimitri.papadimitriou@alcatel.be Lou Berger (LabN Consulting, LLC) : lberger@labn.net

  2. Changes since IETF64 • Two PCE policy related drafts were presented at IETF64: draft-berger-pce-policy-architecture-00.txt draft-bryskin-pce-policy-enabled-path-comp-00.txt • Large piece of the first document was incorporated into draft-ietf-pce-architecture-04.txt • The remainder is merged with the second document

  3. Status of the document • The merged document contains • Background: • motivations, representative scenarios, usage cases • Requirements for policy enabled path computation framework • Policy enabled path computation framework components • Introduction of PCPIM • Policy application and configuration scenarios • Inter-component communications • Name change:  Policy-Enabled Path Computation Framework

  4. Solution Requirements • (G)MPLS path computation-specific • Support for various policies and policy configurations • Provision for Monitoring and Accounting Information • Fault tolerance and recovery • Support for policy-ignorant nodes • Scalability • Security and denial of service considerations • Reuse of existing policy infrastructures (e.g. PCIM) management tools, access and communication protocols

  5. Path Computation Core Information Model(PCCIM) • Policy Core Information Model (PCIM) is introduced in RFC 3060 and expanded in RFC 3460 • Presents the object-oriented information model for representing general policy information • Defines two hierarchies of object classes: • structural classes representing policy information and control of policies • association classes that indicate how instances of the structural classes are related to each other • Classes could be mapped to various concrete implementations, for example, to a directory that uses LDAPv3 as its access protocol

  6. Policy (abstract) PolicySet (abstract) PolicyCondition (abstract) PolicyAction (abstract) PolicyVariable (abstract) PolicyValue (abstract) PolicyGroup VendorPolicyAction PolicyExplicitVariable PolicyRule SimplePolicyAction PolicyImplicitVariable PolicyTimePeriodCondition CompoundPolicyAction Sub-tree of more specific classes VendorPolicyCondition CompoundPolicyCondition Sub-tree of more specific classes SimplePolicyCondition CompoundFilterCondition

  7. Policy Enabled Path Computation Framework Components • PC Policy Repository • PCE Policy Decision Point (PCE-PDP) • PCE Policy Enforcement Point (PCE-PEP) • PCC Policy Decision Point (PCC-PDP) • PCC Policy Enforcement Point (PCC-PEP) • Policy Communication Protocol • PCC-PCE Communication Protocol

  8. PCC-PCE configurationSingle repository PC Policy Management Policy A Policy B PC Policy Repository PCC-PDP PCE-PDP e.g. COPS, COPS-PR e.g. COPS, COPS-PR PCC-PCE communication protocol PCC-PEP PCE-PEP

  9. PCC-PCE configurationMultiple repositories PC Policy Repository 1 PC Policy Repository 2 Policy A Policy B PCC-PDP PCE-PDP e.g. COPS, COPS-PR e.g. COPS, COPS-PR PCC-PCE communication protocol PCC-PEP PCE-PEP

  10. Policy Application(Policy applied only on PCE) PC Policy Management Policy PC Policy Repository PCE-PDP e.g. COPS, COPS-PR PCC-PCE communication protocol PCC PCE-PEP

  11. Policy Application (Policy applied only on PCC) PC Policy Management Policy PC Policy Repository PCC-PDP e.g. COPS, COPS-PR PCC-PCE communication protocol PCC-PEP PCE

  12. Policy Application (Policy applied on PCC and PCE) PC Policy Management Policy A Policy B PC Policy Repository PCC-PDP PCE-PDP e.g. COPS, COPS-PR e.g. COPS, COPS-PR PCC-PCE communication protocol PCC-PEP PCE-PEP

  13. Next Steps • Path Computation Policy Information Model • PCIM sub-model • Extension of QPIM • Detailed specification of functions performed by each of the framework components • WG document?

  14. Thank You

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