Service Provider QoS Providing e2e Guarantees Vijay Krishnamoorthy Cisco IOS Technologies Division April 2001 © 2001, Cisco Systems, Inc Agenda • What is QoS? • QoS Models • Differentiated Services - DiffServ • DiffServ in MPLS Networks • MPLS Traffic Engineering • DiffServ-Aware Traffic Engineering (DS-TE) • DS-TE Solutions • QoS Management • Summary © 2001, Cisco Systems, Inc What is Quality of Service? ARM Your Network! “ The Pragmatic Answer: QoS is Advanced Resource Management The Technical Answer: The Resources!! Set of techniques to manage: • Delay • Delay Variation (Jitter) • Bandwidth • Packet Loss © 2001, Cisco Systems, Inc ” The Value Proposition! • Offer Any to Any Differentiated Services for Profitability: Premium-Class Service – (E.g.: VoIP, Multicast Stock Quotes, etc.) Business-Class Service – (E.g.: SAP,Oracle,Citrix, etc.) Best-Effort Service – (E.g.: Database Replication, Backups, etc.) • Icing on the profitability cake Point-to-Point QoS Guarantees: P2P guarantees for Voice over IP trunks P2P guarantees for highly critical data traffic • Revenue in addition to Basic MPLS VPN & Internet Service! © 2001, Cisco Systems, Inc Service Provider Revenue/Margin Potential Today’s Basic Internet Access Basic Internet Access @ 768 kpbs………… Monthly Revenue/Margin $500/$50 Managed Internet Access Access prioritization by user, group……… $75/$60 Priority access during times of congestion… $75/$60 Usage reporting……………………………… $75/$60 Business Applications (ASP) Priority to each customer’s requirements… $100/$90 Streaming Services Blocking delivery of undesirable services… $50/$40 VPN Services Low cost, software based …………………… $150/$100 TOTAL MARGIN POTENTIAL: $460/customer = +820% Source: Session M16C, SuperNet 2001 © 2001, Cisco Systems, Inc But…but… Bandwidth… “ “Money and sex, storage and bandwidth: only too much is ever enough” •Arno Penzias - Former Head of Bell Labs, and Nobel prizewinner “The worldwide services market is about $1 trillion US By 2005 it will be around $5-7 trillion Look for growth in new services.” •Vinod Khosola - Kleiner Perkins Ventures ”According to CIMI Corporation, by 2010, 67% of transactions will be on value networks, not the Internet” © 2001, Cisco Systems, Inc ” So, What Will Fill Up The Pipe? Source: Internet2 QBone WG © 2001, Cisco Systems, Inc QoS Models ©©2001, 2001,Cisco CiscoSystems, Systems,Inc Inc The IP QoS Pendulum Time No state Aggregated state Best Effort DiffServ Per-flow state IntServ / RSVP The original IP service First efforts at IP QoS Seeking simplicity and scale Bandwidth Optimization & e2e SLAs ((IntServ+DiffServ+ Traffic Engineering)) © 2001, Cisco Systems, Inc MissionCritical Critical Mission Services Services POLICY-BASED POLICY-BASEDNETWORKING NETWORKING VoIP VoIP IntServ IntServ Multimedia Multimedia Video Conference, VPNs VPNs MPLS MPLS Hybrid Hybrid Video Conference, Collaborative Computing Collaborative Computing DiffServ DiffServ SignalingTechniques Techniques(RSVP, (RSVP,DSCP*, DSCP*,ATM ATM(UNI/NNI)) (UNI/NNI)) Signaling Classification&&Marking MarkingTechniques Techniques(DSCP, (DSCP,MPLS MPLSEXP, EXP,NBAR, NBAR,etc.) etc.) Classification CongestionAvoidance AvoidanceTechniques Techniques(WRED) (WRED) Congestion TrafficConditioners Conditioners(Policing, (Policing,Shaping) Shaping) Traffic CongestionManagement ManagementTechniques Techniques(WFQ, (WFQ,CBWFQ, CBWFQ,LLQ) LLQ) Congestion PROVISIONING PROVISIONING&&MONITORING MONITORING The Cisco QoS Framework LinkEfficiency EfficiencyMechanisms Mechanisms(Compression, (Compression,Fragmentation) Fragmentation) Link Frame Frame Relay Relay © 2001, Cisco Systems, Inc PPP PPP HDLC HDLC SDLC SDLC ATM, POS ATM, POS FE,Gig.E FE,Gig.E 10GE 10GE Wireless BroadBand Wireless BroadBand Fixed,Mobile Cable,xDSL Fixed,Mobile Cable,xDSL 10 Solution 1: Toll Bypass with Voice Network Class legacy switches PSTN – Traditional TDM Network Tradition al Telephon y PBX with Packet Interface Toll Bypass PE Solution Requirements ⇒ © 2001, Cisco Systems, Inc PBX with Packet Interfac e QoS on PE Router + Mapping Traffic to Tunnels GB Tunnel + QoS on Core Routers Tradition al Telephon y PE = Diffserv Aware Traffic Engineering 62 Solution 2: Toll Bypass with Voice/Data Converged Network PBX with Circuit Emulatio n Interface Class legacy switches PSTN – Traditional TDM Network CE CE Toll Bypass Enterpris e LAN PE Solution Requirements ⇒ © 2001, Cisco Systems, Inc QoS on CE Router + QoS on PE Router Enterpris e LAN GB Tunnel + Mapping Traffic to Tunnels PE + QoS on Core Routers = Diffserv Aware Traffic Engineering 63 Solution 3: Toll Bypass with VoIP Network Class legacy switches PSTN – Traditional TDM Network IP Phone MultiService Switch MultiService Switch CE CE Toll Bypass Enterpris e LAN PE Solution Requirements IP Phone ⇒ © 2001, Cisco Systems, Inc QoS on CE Router + QoS on PE Router Enterpris e LAN GB Tunnel + Mapping Traffic to Tunnels PE + QoS on Core Routers = Diffserv Aware Traffic Engineering 64 Voice Trunking - Summary Central Tradition Office al Telephon y Voice Trunking Class legacy switches PSTN – Traditional TDM Network Central Office Tradition al Telephon y MPLS Network VoIP Gatewa y VoIP Gateway Toll Bypass PE GB Tunnel PE PE CE CE PE Enterpris e LAN Enterpris e LAN PE VPN Service Internet Service © 2001, Cisco Systems, Inc Enterpris e LAN PE Regular TE Tunnel Internet Access Router Interne t Access Router Enterpris e LAN 65 Solution 4: Virtual Leased Lines – Serial Links MPLS Backbone Serial Link PE Virtual Leased Line (DS-TE + QoS) DS-TE Tunnel PE CE CE Serial IP or PPP or HDLC over MPLS © 2001, Cisco Systems, Inc Serial Link Serial IP or PPP or HDLC over MPLS 66 Solution 5: Virtual Leased Lines – FR Networks Any Transport over MPLS (AToM) Tunnel MPLS Backbone PE PE Virtual Leased Line DS-TE Tunnel (DS-TE + QoS) Frame Relay Frame Relay Frame Relay DLCI CPE Router, FRAD © 2001, Cisco Systems, Inc CPE Router, FRAD 67 Solution 6: Virtual Leased Lines – ATM Networks Any Transport over MPLS (AToM) Tunnel MPLS Backbone PE PE Virtual Leased Line DS-TE Tunnel (DS-TE + QoS) ATM ATM ATM Virtual Circuits CPE Router © 2001, Cisco Systems, Inc CPE Router 68 QoS Management © © 2001, 2001, Cisco Cisco Systems, Systems, Inc Inc 69 Complete Service Management VERIFICATION XML Qos network QPM QPM policy configuration TROUBLESHOOT XML Network CW2000 SMS CW2000service SMS level verification Service level CW2000 CW2000 RWAN RWAN troubleshooting (IPM) (IPM) Device Network Wide CONFIGURE Per-device traffic QDM, QDM, class configuration © 2001, Cisco Systems, Inc Per-device traffic QDM, QDM, class monitoring 70 The Service Level Management Architecture A proven architecture Data Collector Aggregator Local Store Local Store © 2001, Cisco Systems, Inc http http XML Server Store http XML http XML ME1100 XML CW2000 SMS SLM Server http interface SNMP Data Collector Aggregator http http HTTP Interface ME1100 http interface SNMP Third Party Third Party Application Third Party Application Application SDK 71 Summary © 2001, Cisco Systems, Inc 72 How to Build A “Point-to-Cloud” Service? • Scenario 1: – Constrained Access – Unconstrained Backbone Best-Effort o MPLS DiffServ o IP DiffServ o IP MPLS VPN © 2001, Cisco Systems, Inc 73 How to Build A “Point-to-Cloud” Service? • Scenario 2: – Constrained Access – Constrained Backbone DiffServ o MPLS DiffServ o IP DiffServ o IP MPLS VPN © 2001, Cisco Systems, Inc 74 How to Build A “Point-to-Cloud” Service? • Scenario 3: – Constrained Access – Constrained Backbone – Optimised Backbone (Traffic Eng.) DiffServ o MPLS, GB-TE DiffServ o IP DiffServ o IP MPLS VPN © 2001, Cisco Systems, Inc 75 © 2001, Cisco Systems, Inc 76 ... © 2001, Cisco Systems, Inc ” So, What Will Fill Up The Pipe? Source: Internet2 QBone WG © 2001, Cisco Systems, Inc QoS Models ©©2001, 2001 ,Cisco CiscoSystems, Systems,Inc Inc The IP QoS Pendulum... What is QoS? • QoS Models • Differentiated Services - DiffServ • DiffServ in MPLS Networks • MPLS Traffic Engineering • DiffServ-Aware Traffic Engineering (DS-TE) • DS-TE Solutions • QoS Management... with the profile © 2001, Cisco Systems, Inc 17 The DiffServ Architecture (RFC-2475) © 2001, Cisco Systems, Inc 18 Cisco IOS DiffServ • Cisco IOS 12.1(5)T+ & 12.2+ are fully compliant with all