1. Tapestry Software Infrastructure Enabling Virtual Private Networks K. Balakrishnan, N. Chokshi, R. Huang, A. Konrad, S. Kumar, O. Sakdamnuson, B. Zhao

2. Presentation Outline The Pitch The technology: Tapestry Three Potential Applications Introduction to Virtual Private Networks Solving VPN Pains with Tapestry Strategy

3. The Elevator Pitch For enterprises and homes Who need mobile, secure, and reliable data communication The Tapestry-enabled VPN is a software- based VPN solution That delivers a scalable, reliable solution Unlike existing VPN solutions Our product provides portability, lower cost QoS and self-management capabilities

4. Technology Motivation Networks growing exponentially Size, speed, reach Issues of frequent faults, bottlenecks, and complex manageability issues Huge potential for applications (IF we can solve these issues) Solution: a network layer that is Scalable over the wide-area Tolerant of multiple failures Self-monitoring and optimizing

5. Tapestry PhD Thesis work: Ben Zhao, EECS, UCB Wide-area network infrastructure Software components overlaid on IP Find nearest objects given ID Route messages to nodes and objects efficiently around faults Intelligent software communicating with each other to collectively monitor network Performance with minimal overhead

6. Key Novelty Distributed algorithms & data structures Provide routing from A to B Each hop gets close to B in name E.g.: node 3459 going to node 9621 3459  3251  1521  0621  9621 Numerous paths between any 2 pts Each node keeps data proportional to Log of network size Efficient: Minimal overhead in storage, routing distance, and bandwidth

7. So what…? Wide-area application infrastructure Easily build wide-area applications Transparently inherent Tapestry properties Research applications: Bayeux: Wide-area scalable multicast Silverback: Global-scale archival file storage

8. Three Potential Applications Streaming Multimedia FreeFlow (Akamai), FastForward (Inktomi) What we add: efficient multicast over wide-area Victoria’s Secret Fashion Show Electronic Automatic Content Distribution Marimba, Pointcast, BackWeb What we add: efficient content push to consumers Virtual Private Networks Nortel, Checkpoint Software What we add: low cost, software-based QoS

9. Most Compelling: VPNs ApplicationAttractiveness of Underlying Market Rationale Multimedia Streaming Low400 M (2000) Uncertain future demand EACDLow500 M (2000) Flat growth Unproven market VPNsHigh2B annual (2000), 3.5B (2001) * High projected growth (home VPNs) * Data from IDC

10. What is a VPN? Virtual private networks provides reliable, secure and mobile data communications Key benefits Network managers: increases the reach of the corporate network cost efficiently Remote users: secure access to corporate network Corporations: secure communications via extranets to business partners

11. Virtual Private Networks

12. Current VPN Pains High cost of dedicated VPN access provider High cost of management / maintenance Quality of Service is Expensive PPNs have QoS, at high cost “Cloud”-based VPNs provide no QoS

13. The Tapestry Solution Flexible access Small, portable software component Transparent to choice of location, ISP/network Self management and maintenance Active fault-detection and repair Load-balancing, resilience to DoS attacks Software-based Quality of Service QoS guarantees without dedicated lines Status: w orking simulations; finishing prototype

14. Snapshot Result

15. Brief Summary Identified 3 potential Tapestry applications Multimedia Streaming Electronic Content Distribution Virtual Private Networks (VPNs) VPN application is most compelling Larger market opportunity Est. $2bil in 2000, $3.5bil in 2001 Tapestry can solve pains for VPNs So, how can we bring Tapestry to market?

16. Strategy Tapestry License the technology to VPNs Develop own VPN product & incorporate Tapestry

17. Strategy Evaluation StrategyCustomersCompetitionConsiderations LicensingVPN Service Providers (Nortel, MCI- Worldcom, AT&T) MIT, AT&T, Microsoft Research Do not address QoS Weaker performance guarantees Lesser relative risk Limited revenue opportunities VPN ProductEnterprises ISPs VPN Service Providers (Nortel, MCI- Worldcom, AT&T) Longer time to market More established competition

18. Market Segment (Product) Initial Business type: small to medium (SMEs) Industry: manufacturing, education, government Expanding Business type: large Industry: healthcare, financial services, high-tech Application: remote access or extranet access New, value-added services Network design and Consulting Global scale applications

19. Deployment and Pricing Deployment Issues Critical mass of servers necessary Initial partnerships w/ Akamai/Inktomi Leverage self-propagation effect Pricing Model Initial fee for deployment Cost per seat