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  • 1. ESCC & Internet2 Joint Techs Workshop Madison, Wisconsin.July 16-20, 2006 Network Virtualization & Hybridization Thomas Ndousse DOE, Office of Science Welcome
  • 2. IP Real-time Traffic burst Traffic Data Traffic voice Traffic wireless T1 Ethernet ATM SONET DWDM Satellite Video Streaming Soliton
    • The Internet – One of the greatest achievement of the 20-th century
    • The Internet must evolve, innovate, and scale to to meet increasing ubiquity
    • Ossification – Difficult to introduce new innovations in the network
    The Internet: The Evolving Global Network Infrastructure
  • 3. The Internet: then, Now, & tomorrow Simple System Complex System Ubiquitous System
    • 100 Mbps, ~Gbps, ~Tbps
    • Single flow throughput: 9.6, 56kbps, 10 Mbps
    • Fiber optics, free-space optics, wireless, satellite, WiFi. WiMax
    • Twisted pair copper
    • Zero-copy, off-load engines, RDMA,
    • Transport stack: TCP
    • 100 mbps, ~Gbps, ~Tbps
    • Single flow throughput: 9.6, 56Kbps, 10 Mbps
    • Data, voice, streaming video,
    • Real-time, etc
    • Data traffic
    • Guaranteed bandwidth, dedicated channels, VLANs, VPNs, MPLS, GMPLS, quality of service
    • Best-effort, shared resources
    • Commerce, defense, science,
    • Health, education, transportation, national security, etc
    • Research infrastructure
    Current Operational Expectations Original Design Expectations
  • 4.
    • Network Virtualization
    • Virtualization attempts to solve the ossification problem by allowing multiple virtual networks to co-exist within a shared infrastructure
    Emerging Network Virtualization
    • Why?
    • De-ossification - expand or eliminate the neck of the IP hourglass
    • Attempt to understand and manage large-scale network complexities
    • Stimulate research and innovations through deployment and testing of disruptive network technologies
    • Accommodate the requirements of diverse types of applications, especially high-end science applications
  • 5.
    • PlanetLab – Larry Peterson, Scott Shenker, Jon Turner
    • A geographically distributed platform for deploying, evaluating, and accessing planetary-scale network services
    • A blueprint for future Internet
    • Platform for testing disruptive technologies before adoption
    • GINI (Global Environment for Networking Innovations )
    • Beyond existing packet and circuit switching technologies
    • Building security into network architecture and protocol primitives
    • Towards a network science - Network architecture theories , the Internet as a complex system
    Overcoming Ossification and Complexity
  • 6. Topological Representation of Network Virtualization (PlanetLab) Source: PlanetLab and NSF GENI Workshop Report
  • 7. Layer 2 Vnet #1 Layer 4 Vnet #2 Layer 2 Vnet #3 Layer 3 Vnet # n
    • Each virtual Net (Vnet) is an independent network that operates in a protected partition
    • Inter-Vnet communication is allowed at the shared node
    • Vnet #0 is designated as the network that performs the control and management
    • Vnets can acquire and release resources to the main network infrastructure (dynamically?)
    Net #0 Control Net Expectations of Network Virtualization Main Network
  • 8. Layer 1 Layer 5, 6, 7 Layer 1 Layer 2 Layer 3 Vnet #1 Vnet #2 Vnet #3 Vnet #4 Control and Management Layer 4 Layered Approach to Network Virtualization Layer 2 Layer 3 Layer 2
  • 9.
    • Hybrid Network Model 1
    • Vnet is carved from the main backbone network
    • Resources can be exchanged between the Vnet and the main network
    Vnet (Circuit-Based) Main Network (IP-Based)
    • Hybrid Networks Model 2
    • Vnet and the main network are two independent networks
    • No resource exchanged between the two networks
    Vnet (Circuit-Based) Main Network (IP-Based) Hybrid Network: Minimum Implementation of Network Virtualization
  • 10. A B F E D G C Routing Functions Switching Functions e-GMPLS:GMPLS with scheduling and reservation extensions Data Plane Technologies: MPLS, Layer 2 VLANs, Layer 3, SONET, WDWM Hybrid Network Node Functions and Capabilities Hybrid Node Function
    • Switching
    • Switching
    • Routing
    • Switching
    • Switching
    • Routing
    • Routing
    • Routing
    Output Input Hybrid Node Control
    • e-GMPLS
    • E-GMPLS
    • MPLS
    • e-GMPLS
    • e-GMPLS
    • MPLS
    • MPLS
    • MPLS
    Output Input
  • 11. Peering Issues of Hybrid Networks A A B F E D G C A B F E D G C Hybrid Net A
    • e-GMPLS
    • MPLS
    • e-GMPLS
    • MPLS
    Hybrid Control Plane Hybrid Net B
    • e-GMPLS
    • MPLS
    • e-GMPLS
    • MPLS
    Hybrid Control Plane
  • 12. Hybrid Network Research and Engineering Issues
    • Hybrid Network Theory and Foundation
    • Hybrid network architecture
    • Hybrid network node capabilities, functions, signaling, and control
    • Hybrid network traffic engineering and network management
    • Inter-Domain Issues for Hybrid Networks
    • Hybrid network taxonomy – Common terminologies and capabilities
    • Multi-domain control plane: engineering, policies, authentication
    • Hybrid network security issues: vulnerabilities of control planes, Circuit authentication
    • Hybrid network monitoring, performance measurement and prediction
  • 13.
    • Ossification is a problem across all federal agencies (DOE, DARPA, NSA, etc)
    • GENI is NSF’s view of the problem – A multi-agency approach to the problem is critical
    • Contribution from the science community is especially critical
    • LSN Workshop – The Future of Internet and Experiential Facilities Design, July 24-25, 2006
    Inter-Agency View of Network Ossification & Virtualization
  • 14. Questions?