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IP VPN service

IP VPN service. Dimitrios Kalogeras. Ideal Case of QoS VPN. Guarn’td .Min or Max Bandwidth Highly Scalable, Very Granular Edge to Edge control Choice of parameters measured Meaningful SLA’s Cost effective VPN’s Ease of Central management & Config Accurate & meaningful billing info.

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IP VPN service

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  1. IP VPN service Dimitrios Kalogeras IP VPN service model

  2. Ideal Case of QoS VPN • Guarn’td .Min or Max Bandwidth • Highly Scalable, Very Granular • Edge to Edge control • Choice of parameters measured • Meaningful SLA’s • Cost effective VPN’s • Ease of Central management & Config • Accurate & meaningful billing info. • NRN or User controlled service IP VPN service model

  3. QoS Architecture • Formula for VPN QoS VPN QoS = Access QoS + Backbone QoS • Access QoS = Traffic Conditioning • Backbone QoS ~ Traffic Engineering IP VPN service model

  4. Backbone QoS NRN 2 Backbone QoS NRN 1 Univ. ISP remote PoPs Regional ISPs LECs/CLECs Access Network users NRN 3 EU IP VPN service model

  5. Access QoS Access QoS NRN 2 ISP remote PoPs Regional ISPs LECs/CLECs Access Network NRN 3 IP VPN service model

  6. Over provisioning • Need for QoS in the Core ? • Need for Qos in the Access IP VPN service model

  7. Physical Media • POS, WDM(POS)  Core • GigE, DPT  access • QoS on the MAC Layer ? • Efficient Mapping on the IP layer VLANs IP VPN service model

  8. QoS models • Pipe model • Between routers • Similar to ATM FR • Existing US Service • Necessary traffic matrix • Traffic Update model • Unidirectional • GB LSP IP VPN service model

  9. QoS models • Hose models • Share the backbone • Traffic limit on Input (ICR) and Output (OCR) • E-LSP or L-LSP • Draft-duffield-vpn-qos-framework.txt • http://www.acm.org/sigcomm/sigcomm99/papers/session3-2.pdf • draft-rosen-vpns-ospf-bgp-mpls-00.txt • http://www.globecom.net/ietf/draft/draft-duffield-vpn-qos-framework-00.html • draft-iyer-policy-ipvpn-info-model-00.txt IP VPN service model

  10. Application for QoS • End to End • RSVP to diffserv (?) • VIPLL (Cl. Filsfils) • Transantlantic BW management IP VPN service model

  11. Targets • Resilience • Min Guaranteed Ocean BW per NRN • Optimization of links’ utilization • Simpler Design than ATM PVCs ? IP VPN service model

  12. Implementation VIPLL reference Model Assumption: Managed Router in US US Europe ISP AS TEN-us TEN-EU US Internet Backbone R-pe1 R-pe2 Unlimited Minimum N1 Mb/s Unlimited R-c1 R-c2 Cust1 Cust2 IP VPN service model

  13. Building Blocks • CAR – Line Rate, Performance penalty • BGP Communities • # of Queue (Precedence) • Semantics on queues (DSCP) IP VPN service model

  14. ECR 512k ICR 512k ECR 128k ECR 128k ICR 256k ICR 256k MPLS – VPN COS VPN SP VPN_A site 2 Hose Model (point-to-multipoint commodity)Draft-duffield-vpn-qos-framework.txt, AT&T IP VPN service model

  15. Building Blocks • A new AS and address allocated to all NRNs • MPLS VPN with OSPF on the Customer Side (with Area 0) (?) • VPN over different AS propagated in NRNs • Carrier in Carrier with VPN IP VPN service model

  16. IP VPN service model

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