Hierarchies of Networks IP ATM SONET

Hierarchies of Networks: IP / ATM / SONET / WDM

Dense Wave Division Multiplexing (DWDM)

Anatomy of a DWDM System

Core Transport Services

WDM Network: Wavelength View

Relationship of IP and Optical

Typical Super POP

Typical POP

What are the Challenges with Optical Networks?

Wavelength Converters

Wavelength Cross-Connects (WXCs)

Wavelength Router

Optical Network Architecture

Optical Cross-connects (No wavelength conversion)

OEO vs. All-Optical Switches

Wide Area Network (WAN)

Packet (a) vs. Burst (b) Switching

MAN (Country / Region)

Optical Switching Technologies

MEMS Switches for Optical Cross. Connect Proven technology, switching time (10 to 25 msec), moving mirrors is a reliability problem.

Upcoming Optical Technologies

Optical Burst Switching (OBS)

Optical Burst Switching (OBS)

Optical Packet Switching

Optical Packet Switch

Output port contention

OPS Architecture: Synchronization

OPS: Contention Resolution

OPS Architecture Contention Resolutions

OPS: Contention Resolution

Contention Resolutions

Contention Resolutions

Contention Resolutions

OPS: Contention Resolution

Contention Resolutions

Contention Resolutions

Contention Resolutions

Contention Resolutions

Contention Resolutions

Deflection routing

Scalable Multi-Rack Switch Architecture

Optical Switch Fabric

Electronic Vs. Optical Fabric

Multi-rack Hybrid Packet Switch

Features of Optical Fabric

Scheduling Under Reconfiguration Overhead

Single Scheduling

Optical Circuit Switching

No Wavelength Converters

With Wavelength Converters

Routing and Wavelength Assignment (RWA)

Static and Dynamic RWA

Static RWA

Static RWA

Solving Dynamic RWA