1. Welcome Network Virtualization & Hybridization Thomas Ndousse
ESCC & Internet2 Joint Techs Workshop
Madison, Wisconsin.July 16-20, 2006
Network Virtualization & Hybridization
Thomas Ndousse
DOE, Office of Science

2. The Internet: The Evolving Global Network Infrastructure
Real-time Traffic
burst Traffic
Data Traffic
Video Streaming
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
voice Traffic IP T1
ATM
Ethernet
SONET
Satellite
DWDM
wireless
Soliton

3. The Internet: then, Now, & tomorrow
Original Design Expectations
Current Operational Expectations
Research infrastructure
Commerce, defense, science,
Health, education, transportation, national security, etc
Best-effort, shared resources
Guaranteed bandwidth, dedicated channels, VLANs, VPNs, MPLS, GMPLS, quality of service
Twisted pair copper
Fiber optics, free-space optics, wireless, satellite, WiFi. WiMax
Single flow throughput: 9.6, 56kbps, 10 Mbps
100 Mbps, ~Gbps, ~Tbps
Transport stack: TCP
Zero-copy, off-load engines, RDMA,
Data traffic
Data, voice, streaming video,
Real-time, etc
Single flow throughput: 9.6, 56Kbps, 10 Mbps
100 mbps, ~Gbps, ~Tbps
Simple System
Ubiquitous System
Complex System

4. Emerging Network Virtualization
Virtualization attempts to solve the ossification problem by allowing multiple virtual networks to co-exist within a shared infrastructure
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. Overcoming Ossification and Complexity
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

6. Topological Representation of Network Virtualization (PlanetLab)
Source: PlanetLab and NSF GENI Workshop Report

7. Expectations of Network Virtualization
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?)
Layer 2
Vnet #3
Layer 3
Vnet #n
Net #0
Control Net
Main Network
Layer 4
Vnet #2
Layer 2
Vnet #1

8. Layered Approach to Network Virtualization
Vnet #1
Vnet #2
Vnet #3
Vnet #4
Layer 5, 6, 7
Layer 4
Layer 3
Layer 3
Control and Management
Layer 2
Layer 2
Layer 2
Layer 1
Layer 1

9. Hybrid Network: Minimum Implementation of Network Virtualization
Main Network
(IP-Based)
Vnet
(Circuit-Based)
Main Network
(IP-Based)
Vnet
(Circuit-Based)
Hybrid Network Model 1
Vnet is carved from the main backbone network
Resources can be exchanged between the Vnet and the main network
Hybrid Networks Model 2
Vnet and the main network are two independent networks
No resource exchanged between the two networks

10. Hybrid Network Node Functions and Capabilities
e-GMPLS:GMPLS with scheduling and reservation extensions D C
Routing
Functions A F
Switching
Functions G B
Hybrid Node Function
Input
Output
Routing
Switching
Hybrid Node Control
Input
Output
MPLS
e-GMPLS
E-GMPLS
Data Plane Technologies: MPLS, Layer 2 VLANs, Layer 3, SONET, WDWM

11. Peering Issues of Hybrid NetworksA C F A F C A G B G B
Hybrid Net A
Hybrid Control Plane
MPLS
e-GMPLS
Hybrid Net B
Hybrid Control Plane
MPLS
e-GMPLS

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. Inter-Agency View of Network Ossification & Virtualization
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

14. Questions?