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Francois Le Faucheur, Arun Kudur, Ashok Narayanan C isco Systems

draft-lefaucheur-tsvwg-rsvp-multiple-preemption-01.txt Multiple Preemption Priority Policy Element for RSVP Francois Le Faucheur - flefauch@cisco.com. Francois Le Faucheur, Arun Kudur, Ashok Narayanan C isco Systems. IETF 76, Hiroshima. Introduction.

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Francois Le Faucheur, Arun Kudur, Ashok Narayanan C isco Systems

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  1. draft-lefaucheur-tsvwg-rsvp-multiple-preemption-01.txtMultiple Preemption Priority Policy Element for RSVPFrancois Le Faucheur - flefauch@cisco.com Francois Le Faucheur, Arun Kudur, Ashok Narayanan Cisco Systems IETF 76, Hiroshima

  2. Introduction • Companion document to draft-polk-tsvwg-intserv-multiple-tspec-02 • The present I-D defines a complementary extension allowing to associate a separate preemption priority to each signaled bandwidth

  3. Multiple Preemption Priority Policy Element 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Length | P-Type = MULTI_PREEMPTION_PRI | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Priority Sub-Element 1 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ ... ... +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Priority Sub-Element N | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 3: Multiple Preemption Priority Policy Element 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Preemption Priority | Defending Priority | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 4: Priority Sub-Element

  4. Associating Priorities with TSPECs and FLOWSPECs <Resv Message> ::= <Common Header> [ <INTEGRITY> ] <SESSION> <RSVP_HOP> <TIME_VALUES> [ <RESV_CONFIRM> ] [ <SCOPE> ] [ <POLICY_DATA> ... ] <STYLE> <flow descriptor list> Preemption Priority PE: [P1/D1] Multiple Preemption Priority PE: [P2/D2, P3/D3] • <WF flow descriptor> ::= <FLOWSPEC> [<MULTI-FLOWSPEC>] • Flowspec1 • Flowspec2, Flowspec3

  5. Changes 0001.txt • Updated Merging Rules: • Merging Rules across all Flow Specs defined in draft-polk-tsvwg-intserv-multiple-tspec-02 • Merging Rule across all Priority sub-elements: merged Priority sub-elements convey the Priority subelements of the merged Flows Specs • Minor editorials

  6. Next Steps • Address potential feedback from WG • Turn into WG item whenever draft-polk-tsvwg-intserv-multiple-tspec-02 is turned into WG item

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