Paris-November-2000 IP VPN service model IP VPN service Dimitrios Kalogeras.

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Presentation transcript:

Paris-November-2000 IP VPN service model IP VPN service Dimitrios Kalogeras

Paris-November-2000 IP VPN service model 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

Paris-November-2000 IP VPN service model QoS Architecture Formula for VPN QoS VPN QoS = Access QoS + Backbone QoS –Access QoS = Traffic Conditioning –Backbone QoS ~ Traffic Engineering

Paris-November-2000 IP VPN service model Backbone QoS NRN 1 Access Network NRN 3 EU users Univ. ISP remote PoPs Regional ISPs LECs/CLECs NRN 2 Backbone QoS

Paris-November-2000 IP VPN service model Access QoS NRN 2 Access Network NRN 3 ISP remote PoPs Regional ISPs LECs/CLECs Access QoS

Paris-November-2000 IP VPN service model Over provisioning Need for QoS in the Core ? Need for Qos in the Access

Paris-November-2000 IP VPN service model Physical Media POS, WDM(POS)  Core GigE, DPT  access QoS on the MAC Layer ? Efficient Mapping on the IP layer VLANs

Paris-November-2000 IP VPN service model QoS models Pipe model – Between routers –Similar to ATM FR –Existing US Service Necessary traffic matrix Traffic Update model Unidirectional GB LSP

Paris-November-2000 IP VPN service model 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 draft-rosen-vpns-ospf-bgp-mpls-00.txt 00.htmlhttp:// 00.html draft-iyer-policy-ipvpn-info-model-00.txt

Paris-November-2000 IP VPN service model Application for QoS End to End – RSVP to diffserv (?) VIPLL (Cl. Filsfils) Transantlantic BW management

Paris-November-2000 IP VPN service model Targets Resilience Min Guaranteed Ocean BW per NRN Optimization of links’ utilization Simpler Design than ATM PVCs ?

Paris-November-2000 IP VPN service model Implementation VIPLL reference Model Europe Cust1 Cust2 Minimum N1 Mb/s Unlimited Backbone US Internet TEN-us R-pe1 R-c1 R-pe2 R-c2 TEN-EU ISP AS US Assumption:Managed Router in US

Paris-November-2000 IP VPN service model Building Blocks CAR – Line Rate, Performance penalty BGP Communities # of Queue (Precedence) Semantics on queues (DSCP)

Paris-November-2000 IP VPN service model MPLS – VPN COS VPN SP VPN_A site 2 ICR 256k ICR 256k ICR 512k ECR 128k ECR 512k Hose Model (point-to-multipoint commodity) Draft-duffield-vpn-qos-framework.txt, AT&T

Paris-November-2000 IP VPN service model 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

Paris-November-2000 IP VPN service model