Multicast traffic aggregation in MPLS-based VPN networks

This article gives an overview of the current practical approaches under study for a scalable implementation of multicast in layer 2 and 3 VPNs over an IP-MPLS multiservice network. These proposals are based on a well-known technique: the aggregation of traffic into shared trees to manage the forwarding state vs. bandwidth saving trade-off. This sort of traffic engineering mechanism requires methods to estimate the resources needed to set up a multicast shared tree for a set of VPNs. The methodology proposed in this article consists of studying the effect of aggregation obtained by random shared tree allocation on a reference model of a representative network scenario.Publicad

The Changing Patterns of Internet Usage

Symposium: Essays from Time Warner Cable\u27s Research Program on Digital Communications

Internet protocol television (IPTV): The Killer application for the next-generation internet

Internet Protocol Television (IPTV) will be the killer application for the next-generation Internet and will provide exciting new revenue opportunities for service providers. However, to deploy IPTV services with a full quality of service (QoS) guarantee, many underlying technologies must be further studied. This article serves as a survey of IPTV services and the underlying technologies. Technical challenges also are identified

The Changing Patterns of Internet Usage

The Internet unquestionably represents one of the most important technological developments in recent history. It has revolutionized the way people communicate with one another and obtain information and created an unimaginable variety of commercial and leisure activities. Interestingly, many members of the engineering community often observe that the current network is ill-suited to handle the demands that end users are placing on it. Indeed, engineering researchers often describe the network as ossified and impervious to significant architectural change. As a result, both the U.S. and the European Commission are sponsoring “clean slate” projects to study how the Internet might be designed differently if it were designed from scratch today. This Essay explores emerging trends that are transforming the way end users are using the Internet and examine their implications both for network architecture and public policy. These trends include Internet protocol video, wireless broadband, cloud computing programmable networking, and pervasive computing and sensor networks. It discusses how these changes in the way people are using the network may require the network to evolve in new directions

The Changing Patterns of Internet Usage

The Internet unquestionably represents one of the most important technological developments in recent history. It has revolutionized the way people communicate with one another and obtain information and created an unimaginable variety of commercial and leisure activities. Interestingly, many members of the engineering community often observe that the current network is ill-suited to handle the demands that end users are placing on it. Indeed, engineering researchers often describe the network as ossified and impervious to significant architectural change. As a result, both the U.S. and the European Commission are sponsoring “clean slate” projects to study how the Internet might be designed differently if it were designed from scratch today. This Essay explores emerging trends that are transforming the way end users are using the Internet and examine their implications both for network architecture and public policy. These trends include Internet protocol video, wireless broadband, cloud computing programmable networking, and pervasive computing and sensor networks. It discusses how these changes in the way people are using the network may require the network to evolve in new directions

Mobile-IP ad-hoc network MPLS-based with QoS support.

The support for Quality of Service (QoS) is the main focus of this thesis. Major issues and challenges for Mobile-IP Ad-Hoc Networks (MANETs) to support QoS in a multi-layer manner are considered discussed and investigated through simulation setups. Different parameters contributing to the subjective measures of QoS have been considered and consequently, appropriate testbeds were formed to measure these parameters and compare them to other schemes to check for superiority. These parameters are: Maximum Round-Trip Delay (MRTD), Minimum Bandwidth Guaranteed (MBG), Bit Error Rate (BER), Packet Loss Ratio (PER), End-To-End Delay (ETED), and Packet Drop Ratio (PDR) to name a few. For network simulations, NS-II (Network Simulator Version II) and OPNET simulation software systems were used.Dept. of Electrical and Computer Engineering. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis2005 .A355. Source: Masters Abstracts International, Volume: 44-03, page: 1444. Thesis (M.Sc.)--University of Windsor (Canada), 2005

Performance Enhancement of Quality of Service of IP Mobility for Real-Time Traffic

Future Internet traffic will be huge both for real time and non-real time traffic in an IP mobility environment due to proliferation of mobile nodes. MIPv4 is one of IETF defined IP mobility protocols but with QoS issues like end-to-end delay due to triangular routing, jitter and throughput. OPNET Modeler 14.5 was used in this research to simulate MIPv4 based WiMax network combining MPLS and Diffserv to improve upon the service quality of the network. The end-to-end delay for 20 mobile nodes (MN) was reduced considerably to less than 0.09 second for VoIP traffic and 0.7 second for video conferencing. Jitter was virtually eliminated and good improvement on service throughput. With this improvement in MIPv4 network performance, it can be integrated with MIPv6 network for better future Internet service delivery

Layer 3 Multiprotocol Label Switching Virtual Private Network

Layer 3 Multiprotocol Label Switching Virtual Private Networks (L3 MPLS VPNs) is becoming a key technology of Service Providers' Services for corporations who desire to use remote connectivity. It is getting more popularity by customers for its significant advantages over the prior VPN technologies such as Frame relay and ATM. The main purpose of this thesis project was to develop an understanding of L3 MPLS VPNs in theory and practice. It is targeting to explain the technology briefly and demonstrate how it works to prepare a learning material for Data Network Services course given at VAMK, University of Applied Sciences. The practical part of this project took place in the Technobothnia Research Center using Cisco technology. Four Cisco 2801 routers, laboratory computers and Ethernet and serial media links were used to build the network and accomplish connectivity. There are also software tools used such as HyperTerminal to configure the routers and WireShark packet analyzer to examine the communication protocols used for connectivity