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Francois Le Faucheur, Anna Charny – Cisco

<draft-lefaucheur-rsvp-ecn-01.txt> RSVP Extensions for Admission Control over Diffserv using Pre-Congestion Notification Francois Le Faucheur - flefauch@cisco.com. Francois Le Faucheur, Anna Charny – Cisco Philip Eardley, Bob Briscoe, Dave Songhurst - BT Research

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Francois Le Faucheur, Anna Charny – Cisco

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  1. <draft-lefaucheur-rsvp-ecn-01.txt>RSVP Extensions for Admission Control over Diffserv using Pre-Congestion Notification Francois Le Faucheur - flefauch@cisco.com Francois Le Faucheur, Anna Charny – Cisco Philip Eardley,Bob Briscoe, Dave Songhurst - BT Research Kwok-Ho Chan, Joe Babiarz - Nortel draft-lefaucheur-rsvp-ecn-01.txt

  2. Drafts – ‘Pre-Congestion Notification marking’ draft-briscoe-tsvwg-cl-phb-02.pdf ‘An edge-to-edge Deployment Model for Pre-Congestion Notification: Admission Control over a DiffServ Region’ draft-briscoe-tsvwg-cl-architecture-03 • further deployment models using PCN (future work) • end-to-end / Open • others? Controlled environment • Signalling extensions • RSVP, draft-lefaucheur-rsvp-ecn-01 • NSIS (future work) • Border anti-cheating (related work) • draft-briscoe-tsvwg-re-ecn-border-cheat-01 • extending CL-region across operators • PCN over MPLS (related work) • MPLS & ECN/PCN, draft-davie-ecn-mpls-00 draft-lefaucheur-rsvp-ecn-01.txt

  3. RSVP PATH 1 2 3 3 3 3 4 1 IP routers Control signalling admission control Reservationenabled standard RSVP PATH 1 standard RSVP PATH RSVP/ECNgateway 2 standard RSVP PATH 4 CL PHB & ECN only 3 RSVP unaware CL PHB& ECN CL PHB& ECN data μflows controlled load PHB& ECN Intserv CL draft-lefaucheur-rsvp-ecn-01.txt

  4. RSVP RESV RSVP RESV 1 2 3 3 3 3 4 1 IP routers Control signalling admission control Reservationenabled standard RSVP RESV 1 extended RSVP RESV RSVP/ECNgateway 2 admit μflow to aggregate across region extended RSVP RESV 4 piggy-back PCN fractionas opaque object CL PHB & ECN only 3 RSVP unaware CL PHB& ECN CL PHB& ECN data μflows controlled load PHB& ECN Intserv CL draft-lefaucheur-rsvp-ecn-01.txt

  5. Proposed Extensions:New Object: CL-ECN Object Reflects ratio of CE marked Packets. FOR ADMISSION CONTROL In Resv Messages +-------------+-------------+-------------+-------------+ | Congestion Level Estimate | +-------------+-------------+-------------+-------------+ | Sustainable Aggregate Rate | +-------------+-------------+-------------+-------------+ Reflects Sustainable Aggregate Rate FOR PREEMPTION draft-lefaucheur-rsvp-ecn-01.txt

  6. Proposed Extensions:New Error Codes • No CL-capable Egress GW • Egress GW cannot compute Congestion Level Estimate • CL-ECN Probes Required draft-lefaucheur-rsvp-ecn-01.txt

  7. Next Steps • Reflect upcoming progress of PCN-based admission control and preemption mechanisms draft-lefaucheur-rsvp-ecn-01.txt

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