Design of p-Cycles for full node protection in WDM Mesh Networks



INTRODUCTION

WDM techniques enable a single fiber to carry multiple
non-overlapping channels, and a single channel can operate
at the speed of up to 100 Gbps. WDM networks carry huge
amounts of traffic. As optical WDM networks are occasionally
prone to a single failure of network infrastructure (e.g., a fiber
cut or a node failure), survivability is an essential requirement
in the design of WDM networks.
....etc

[:=Read Full Message Here=:]

i need java codings for switching and traffic grooming in wdm networks ....etc

[:=Read Full Message Here=:]

Under the guidance
S.Arunmozhi

Submitted by,
V.Mahalakshmy




Introduction

Wavelength division multiplexing
- multiple optical carrier signals of unique wavelengths on a single fiber cable.

Advantages of WDM
-high bandwidth.
-extremely low error rate.
-low signal attenuation.
-More secure.
....etc

[:=Read Full Message Here=:]

The need for high bandwidth in today's IP-based Internet, and the promise of WDM to provide this high capacity, is fueling the current investigations on IP-over-
WDM networks. Internet growth not only requires providing immense bandwidth but also triggers the need for providing the guarantees with respect to quality of service, security, and fault tolerance. Currently telecommunication networks use SONET/SDH for transmission, multiplexing and protection. It is implemented over WDM. As a result we are using the IP over SONET/SDH ....etc

[:=Read Full Message Here=:]

In optical WDM networks, since each lightpath can carry a huge mount of traffic, failures may seriously damage the end-user applications.As a result, fault-tolerance is an important issue in these networks. The primary path is the light path which carries traffic during normal operation. in case of a failure, the traffic is rerouted on a backup path. a reliable and fault-tolerant routing algorithm is discussed in this paper for establishing primary and backup path. load balancing is used to establish the primary path. In this method, the pa ....etc

[:=Read Full Message Here=:]

Wavelength Division Multiplexing (WDM)

Introduction
In a WDM system, each of the wavelengths is launched into the fiber, and the signals are demultiplexed at the receiving end. Like TDM, the resulting capacity is an aggregate of the input signals, but WDM carries each input signal independently of the others. This means that each channel has its own dedicated bandwidth; all signals arrive at the same time, rather than being broken up and carried in time slots. The difference between WDM and dense wavelength division multiplexing (DWDM) is f ....etc

[:=Read Full Message Here=:]

In a WDM system, each of the wavelengths is launched into the fiber, and the signals are demultiplexed at the receiving end. Like TDM, the resulting capacity is an aggregate of the input signals, but WDM carries each input signal independently of the others. This means that each channel has its own dedicated bandwidth; all signals arrive at the same time, rather than being broken up and carried in time slots. The difference between WDM and dense wavelength division multiplexing (DWDM) is fundamentally than does WDM, and therefore has a greater ....etc

[:=Read Full Message Here=:]

Wavelength Division Multiplexing (WDM)


In a WDM system, each of the wavelengths is launched into the fiber, and the signals are demultiplexed at the receiving end. Like TDM, the resulting capacity is an aggregate of the input signals, but WDM carries each input signal independently of the others. This means that each channel has its own dedicated bandwidth; all signals arrive at the same time, rather than being broken up and carried in time slots. The difference between WDM and dense wavelength division multiplexing (DWDM) is fundamentally ....etc

[:=Read Full Message Here=:]

Switching and Traffic Grooming in WDM Networks at java

Abstract: We consider the role of switching in minimizing the number of electronic ports (e.g., SONET ADMs) in an optical network that carries sub-wavelength traffic. Providing nodes with the ability to switch traffic between wavelengths, such as through the use of SONET cross-connects, can reduce the required number of electronic ports. We show that only small switches distributed among the nodes in the ring are needed for significant reductions in the number of ports. We charac ....etc

[:=Read Full Message Here=:]

Abstract
Most device drivers have one ulterior motive and one target to achieve - deliver the maximum using the minimum. No matter how stable or feature rich a device driver might be, if it cannot perform in terms of high throughput and low CPU utilization, it is as good as any other run of the mill driver.The objective of this topic is to use the thinking out of the box concept and expose techniques, which go beyond just good programming principles to get that extra edge which can put your next driver into the elite group of high perform ....etc

[:=Read Full Message Here=:]