The huge growth of internet has exposed the problem of scaling and management in a big datagram based packet communication. New algorithms, architectures and routing protocols are regularly being developed. New protocols on internet layer and improvements to existing protocols are continuously being planned. Because of this rapid boom in the internet world, a lot of applications and devices are being developed. All of these applications and devices needs to show better consistency, performance and effectiveness for transferring data over a network. Router plays a crucial role in sending the data from one network to another network. IP based routing is used for exchange of data on internet in spite of better functionality, it also have some drawbacks as well because of large amount of growing demand by the new internet applications and software. The term Traffic Engineering (TE) is used to resolve the issues related to IP routing. It is used to produce the expected and definite services to the users of internet service. Traffic Engineering can be applied with the help of multiple networks.
Multi-Protocol Label Switching (MPLS) is rapidly emerging technology, which plays a key role in next generation networks by delivering QoS and traffic engineering (TE) features. MPLS is helpful in managing traffic when some links or paths are under and/or over utilized. Traffic engineering is the main strength of MPLS. Where an IP-based network is connectionless, MPLS based network defines definite paths for network traffic based on some Quality of Service level. In MPLS a look – up in switching table is certainly less complex and less time consuming than a corresponding routing table look–up in an IP router. This book presents an analysis of MPLS signaling protocols for traffic engineering and shows the capability of providing traffic engineering in MPLS compared to the conventional routing protocol, and also explains the MPLS LSR operations based on the basic LSR functionality of classification, queue, and scheduling. After comparative analysis of MPLS and non-MPLS network it shows that MPLS provides improved network performance for heavy traffic environments. This is useful to professionals and researcher who are working on MPLS networks.
Traffic engineering is a set of actions whose goal is to evaluate and optimize the performance of operational networks. The performance of an operational network is enhanced by addressing traffic-oriented performance measures, such as delay, delay variation, packet loss, and throughput, while utilizing network resources economically and reliably. One of the most important traffic engineering actions is the control of the routing function in the network so that traffic can be steered through it as effectively as possible. This book is based on a work which introduces novel and practical algorithms that optimize traffic routing within operational IP and MPLS networks.
The Internet based solutions have developed rapidly in the last decade. Online social networks are among the most popular solutions. The capabilities of mobile phones enable to reach social networks via different interfaces. However, it is an open question how to involve them efficiently in the social network architecture. We should realize the fact that the phonebook of the mobile device describes the social relationships of its owner. Based on that, relationships can be discovered automatically. Content distribution is becoming more and more important in social networks. BitTorrent is one of the most efficient peer-to-peer based content distribution solution. Involving mobile phones into such network is challenging, however it has great benefits e.g. when applying such architecture in mobile related social networks. This book addresses these issues and proposes novel and efficient approach considering mobile environment. The book brings several practical examples and real measurements to help understating the results.
A guide to designing and implementing VPLS services over an IP/MPLS switched service provider backbone. Today's communication providers are looking for convenience, simplicity, and flexible bandwidth across wide area networks-but with the quality of service and control that is critical for business networking applications like video, voice and data. Carrier Ethernet VPN services based on VPLS makes this a reality. Virtual Private LAN Service (VPLS) is a pseudowire (PW) based, multipoint-to-multipoint layer 2 Ethernet VPN service provided by services providers By deploying a VPLS service to customers, the operator can focus on providing high throughput, highly available Ethernet bridging services and leave the layer 3 routing decision up to the customer. Virtual Private LAN Services (VPLS) is quickly becoming the number one choice for many enterprises and service providers to deploy data communication networks. Alcatel-Lucent VPLS solution enables service providers to offer enterprise customers the operational cost benefits of Ethernet with the predictable QoS characteristics of MPLS. Items Covered: - Building Converged Service Networks with IP/MPLS VPN Technology; - IP/MPLS VPN Multi-Service Network Overview; - Using MPLS Label Switched Paths as Service Transport Tunnels; - Routing Protocol Traffi c Engineering and CSPF; - RSVP-TE Protocol; - MPLS Resiliency - Secondary LSP; - MPLS Resiliency - RSVP-TE LSP Fast Reroute; - Label Distribution Protocol; - IP/MPLS VPN Service Routing Architecture; - Virtual Leased Line Services; - Virtual Private LAN Service; - Hierarchical VPLS; - High Availability in an IP/MPLS VPN Network; - VLL Service Resiliency; - VPLS Service Resiliency; - VPLS BGP Auto-Discovery; - PBB-VPLS; - OAM in a VPLS Service Network.
This book focuses on the performance evaluation of the Optical Burst Switched (OBS) networks. A simulation framework based on OPNET Modeler is designed and implemented to evaluate the performance of an OBS network in the presence of self-similar traffic sources. The impact of self-similar traffic sources and specific design parameters imposed on the network is assessed in terms of burst assembly delay, its jitter and burst loss ratio. The performance metrics have a strong dependency on parameters such as number of packets per burst, assembly timeout, number of available wavelengths and the degree of the traffic self-similarity. Furthermore, the impact of time and size-based burst assembly algorithms utilized in edge routers, on the self-similarity level of the output traffic, is evaluated. Both static & adaptive approaches are examined. This research utilizes the OPNET Modeler® focusing on the characteristics of the output traffic. Various Hurst parameter estimators have been applied to estimate the Hurst parameter of the aggregated input and output traffic streams. The performance impact of the burst assembly approaches in terms of burst assembly delay and its jitter is measured.
"Advanced QoS for Multi-Service IP/MPLS Networks" is the definitive guide to Quality of Service (QoS), with comprehensive information about its features and benefits. Find a solid theoretical and practical overview of how QoS can be implemented to reach the business objectives defined for an IP/MPLS network. Topics include standard QoS models for IP/MPLS networks, essential QoS features, forwarding classes and queuing priorities, buffer management, multipoint shared queuing, hierarchical scheduling, and rate limiting. This book will enable you to create a solid QoS architecture/design, which is mandatory for prioritizing services throughout the network.
Queueing theory is an essential concept to review in light of tactical wireless communications and networks. Wireless communication systems, in particular frequency spectrum, are expensive and it is imparative that we make optimal use of frequency spectrum. Therefore the performance analysis is an important factor in the designing phase of the networks. This book addresses the performance evaluation and enhancement of wireless networks, examining the channel assignment problem of cellular networks.
The power of wireless sensor networks (WSN) lies in the ability to deploy large numbers of tiny nodes that assemble and configure themselves. Usage scenarios for these devices range from real-time tracking, to monitoring of environmental conditions, to Military applications, to monitoring of the health of structures or equipment. There is extensive research in the development of new algorithms for data aggregation ,ad hoc routing, and distributed signal processing in the context of wireless sensor networks. As the algorithms and protocols for wireless sensor network are developed, they must be supported by a low-power, efficient and flexible hardware platform. This book describes systematic performance study of two state-of-the-art dynamic routing protocols for WSN, the Dynamic Source Routing protocol (DSR) and the Ad Hoc On-Demand DistanceVector protocol (AODV).
The purpose of this research study was to evaluate the performance of real time video over IP network especially the critical real-time video for medical online applications. This study was based on experiments which involved MPEG’s video CODECS. These experiments were divided into two parts and each part of the experiment was aimed to cover various metrics under study. The practical part focused on testing the performance of different video compression codecs (MPEG1, MPEG2, MPEG4) that were implemented on different IP networks (native IPv6, native IPv4, 6to4 and 6in4), to see the IP network’s impaction on the video performance and the behavior of the video codecs itself under different IP networks.
Multimedia services, such as IPTV and video conferencing, have emerged to be an important part of the traffic sources in new communication systems requiring a High Speed IP switching. This book presents a scalable architecture of a high-performance IP switch which is based on Priority Active Queue Management (PAQM). It provides multimedia services with improved quality of service (QoS) for the communication system. Better Quality of service, in terms of delay, through-put and loss-rates, availability and security can be provided by using a packet scheduling technique and a buffer management architecture of packet switching networks. These techniques are applied to all kind of interconnected networks such as Wimax networks, ATM networks and IP networks.
The main goal of the book is to develop models for designing WLAN, used in transport networks with mobile objects. At that quality indicators of functioning of networks should be maximally close to the actual data. Due to the fact that the interaction of local wireless network takes place within the coverage area, its Access Point occurs with a limited number of clients - closed cyclic models are used for transport vehicles to simulate such systems. In this book, the number of mobile objects determined depending on the distance from the base station and identification of system parameters of data transmission, based on this the problem of determining of the actual speed of data transmission from the moving objects is solved, located within the coverage area of the base station of wireless network.
This work is concerned with the detailed study of Asia’s largest sewage treatment plant of 345 Million Litre per Day capacity based on Up flow Anaerobic Sludge Blanket reactor, installed at Bharwara, Lucknow, Uttar Pradesh, India. The performance evaluation and design analysis of the sewage treatment plant has been carried out to comment on the adequacy of design and capacity. It will also prove quite useful as its a compiled information for ready reference in the area of wastewater engineering.
MPLS is the protocol framework on which the attention of network service provider is focused as it provides privacy and unbreakable security to the users. Recently, VPNs based on MPLS have achieved quite great progress. MPLS VPN through ISP network is easier and faster. But with the development of internet technology the self security of MPLS VPN now cannot meet the enhanced requirement of the network security. So, taking the advantage of IPSec protocol for data encrypting, the security scheme of VPN is enhanced. Recent advances in Virtual Private Network (VPN) offer great benefits to network managers, especially in terms of cost savings. VPN networks based upon IP Security (IPSec) along with a combination of MPLS is a viable alternative that is growing in popularity.Security of MPLS is a major issue There are various attacks which can break the security of MPLS technology. For example a brute force attack is a strategy used to break the confidentiality of data in MPLS Technology. So Encryption Algorithms like AES , DES, TDES which is a part of IPSec are used to secure MPLS technology against various attacks.
Now - a - days Multi-Protocol label switching (MPLS) is the new WAN (Wide Area Network) technology which is used in routers for long distance communication. In this thesis we compare the performance and convergence time between two same topology, where one is configured with MPLS technology and other one is configured with convectional WAN technology (HDLC). MPLS carries differentiated services across the Internet through a virtual path capability between packet (label) switches. In order to simulate the result we use cisco packet tracer 5.3 and GNS3 0.7 software. Using packet tracer we configure HDLC and using GNS3 we configure MPLS and for this purpose we use cisco c7200 router. After the comparison we found that MPLS has the capabilities to engineer traffic tunnels by avoiding congestion and utilizing all available bandwidth with an efficient manner and it has faster convergence time.