Department of Energy
Office of Science
Welcome
ESCC & Internet2 Joint Techs Workshop
Madison, Wisconsin.July 16-20, 2006
Network Virtualization &
Hybridization
Thomas Ndousse
DOE, Office of Science
Department of Energy
The Internet: The Evolving Global
Network Infrastructure
Office of Science
IP

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
T1
ATM
Ethernet
SONET
Satellite
DWDM
Soliton
wireless
Department of Energy
The Internet: then, Now, & tomorrow
Office of Science
Original Design Expectations
Current Operational Expectations

Research infrastructure



Best-effort, shared resources


Twisted pair copper



Single flow throughput: 9.6, 56kbps, 10 
Mbps
Transport stack: TCP


Data traffic



Single flow throughput: 9.6, 56Kbps, 10 
Mbps
Simple
System
Commerce, defense, science,
Health, education, transportation,
national security, etc
Guaranteed bandwidth, dedicated
channels, VLANs, VPNs, MPLS,
GMPLS, quality of service
Fiber optics, free-space optics, wireless,
satellite, WiFi. WiMax
100 Mbps, ~Gbps, ~Tbps
Zero-copy, off-load engines, RDMA,
Data, voice, streaming video,
Real-time, etc
100 mbps, ~Gbps, ~Tbps
Ubiquitous
System
Complex
System
Department of Energy
Emerging Network Virtualization
Office of Science
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
Department of Energy
Office of Science
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
Department of Energy
Office of Science
Topological Representation of
Network Virtualization (PlanetLab)
Source: PlanetLab and NSF GENI Workshop Report
Department of Energy
Expectations of Network Virtualization
Office of Science
Each virtual Net (Vnet) is an
independent network that operates
in a protected partition
•
Inter-Vnet communication is
allowed at the shared node
Main Network
•
Vnet #0 is designated as the
network that performs the control
and management
Layer 4
Vnet #2
•
Vnets can acquire and release
resources to the main network
infrastructure (dynamically?)
Layer 2
Vnet #3
Layer 3
Vnet #n
Net #0
Control Net
Layer 2
Vnet #1
•
Department of Energy
Layered Approach to Network
Virtualization
Office of Science
Vnet #2
Vnet #3 Vnet #4
Layer 5, 6, 7
Vnet #1
Control and
Management
Layer 4
Layer 3
Layer 2
Layer 3
Layer 2
Layer 1
Layer 2
Layer 1
Department of Energy
Hybrid Network: Minimum Implementation
of Network Virtualization
Office of Science
Main Network
(IP-Based)
Vnet
Vnet
(Circuit-Based)
Main Network
(IP-Based)
(Circuit-Based)
Hybrid Network Model 1
Hybrid Networks Model 2
1.
Vnet is carved from the main
backbone network
1.
Vnet and the main network are
two independent networks
2.
Resources can be exchanged
between the Vnet and the
main network
2.
No resource exchanged between
the two networks
Department of Energy
Hybrid Network Node Functions and
Capabilities
Office of Science
E
e-GMPLS:GMPLS with scheduling and reservation
extensions
D
C
A
F
B
Hybrid Node Function
Input
Output
 Routing  Routing
 Routing  Switching
 Switching  Routing
 Switching  Switching
Routing
Functions
G




Hybrid Node Control
Input
Output
 MPLS
MPLS
 e-GMPLS
MPLS
e-GMPLS  MPLS
E-GMPLS  e-GMPLS
Data Plane Technologies: MPLS, Layer 2 VLANs, Layer 3, SONET, WDWM
Switching
Functions
Department of Energy
Peering Issues of Hybrid Networks
Office of Science
E
E
D
D
C
A
F
F
C
A
B
G
B
G
Hybrid Net A
Hybrid Net B
Hybrid Control Plane
Hybrid Control Plane

MPLS

MPLS

e-GMPLS

e-GMPLS

MPLS

MPLS

e-GMPLS

e-GMPLS
Department of Energy
Hybrid Network Research and
Engineering Issues
Office of Science
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
Department of Energy
Inter-Agency View of Network
Ossification & Virtualization
Office of Science

Ossification is a problem across all federal
agencies (DOE, DARPA, NSA, etc)

GENI is NSF’s view of the problem – A multiagency 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
Department of Energy
Office of Science
Questions?