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Wavelength-division multiplexing (WDM) is basically frequency division multiplexing in the optical frequency domain, where on a single optical fiber there are multiple communication channels at different wavelengths. In this paper, we first analyze the different IP/WDM networking functional models, then discuss the IP over switched WDM architecture. We present an analysis the potential benefits of...
GMPLS grew out of MPLS, a packet-switching technology designed to improve the efficiency of data networks. In this paper, we discuss the GMPLS technology, analyze its application. GMPLS is an advanced protocol which is essential for managing a diverse and complex network, because service deployment and service provisioning are manual, lengthy and costly processes. GMPLS has caused technical challenges...
Due to the frequent occurrence of fiber cuts and the traffic loss a failure can occur, network survivability becomes a critical concern in network design and operation. As networks migrate from ring based networks to mesh based networks, because its inefficient resource usage, researches on survivable WDM mesh network have received increasing attention. In this paper, we analyze the protection principle...
In WDM network, the load balance problem has received much attention in parallel and distributed applications because good solutions are critical to achieving speedups. This paper discusses traffic technology and load balancing in optical networks. In WDM network, enhancing the performance of an operational network, at both the traffic and the resource levels, are major objectives of traffic engineering...
The success of Generalized Multi-protocol Label Switching (GMPLS) provides a solution that enhances IP by its remarkably advanced features particularly the improvement in data transfer rate. GMPLS can be well classified, managed and policed across different types of networks. In this paper, we discuss the GMPLS and its application for core optical network. The IP and optical layers are converging...
Network load balancing is the ability to aggregate two or more wide area network (WAN) connections in order to achieve greater reliability and overall throughput. This paper discusses traffic technology and flow optimization in optical network. Performance optimization of networks is actually a control problem. Traffic engineering should provide sufficient control in an adaptive feedback control system...
In the optimization of operational networks the most important target is the minimization of congestion. Congestion can be divided into two types, congestion in the case where resources are insufficient to carry all the traffic, and congestion in the case where resources are divided inefficiently so that a part of the network is over-utilized while another part of the network has unused band-width...
Wavelength-division multiplexing (WDM) is the best technology currently available to handle the rapidly increasing demand for bandwidth in fiber-optical telecommunications networks. This paper analyzes WDM transport network and discusses GMPLS technology for WDM network. Today, WDM optical transport networks have become more complex over the years and have extended into the metropolitan areas closer...
In recent years, IP over WDM has become a key technology of choice for meeting the tremendous bandwidth demand in the optical infrastructure. Survivability is an emerging discipline that blends optical network security with business risk management for the purpose of protecting highly distributed information services and assets. No system is totally immune to attacks, accidents, or failures. Therefore,...
The popularity of the Internet and its related services continues to be one of the main reasons for the explosive growth of traffic volume in global information and optical network. This paper presents an analytical approach for studying load and traffic engineering (TE) in optical network. Load balancing is common in optical networks. It is a key component of traffic engineering, link bundling, and...
This paper proposes a new approach for wavelength-routed optical network with GMPLS technology in WDM networks. Wavelength-routed optical network is utilized through the wavelength-division multiplexing (WDM) technology which supports the propagation of multiple laser beams through a single fiber-optic link provided that each laser beam uses a distinct optical wavelength. Multi-protocol label switch...
In recent years, there have been dramatic changes in the character of security problems, in their technical and business contexts, and in the goals and purposes of their stakeholders. As a consequence, many of the assumptions underlying traditional security technologies are no longer valid. Failure to recognize the depth and breadth of these changes in combination prevents effective solutions to modern...
Generalized multi-protocol label switching (GMPLS) is being developed by the IETF as the industry standard for transport network control planes. GMPLS defines IP based control of optical resources. Routers are expected to deliver advanced services at higher throughput while handling large amounts of label switching path (LSP) creation/deletion, traffic engineering link information exchange, and link...
In recent years, with the information increasing rapidly, WDM communication network traffic is paid more and more attentions. Traffic engineering (TE) is an interesting application in IP-based networks. TE main objective is to optimize the performance of a network through an efficient utilization of network resources. This paper discusses traffic technology and load balancing in optical networks....
The huge demand for communication network has tend to make topologies of optical networks based on wavelength division multiplexing (WDM) complex. This article proposes a new approach for optical communication network with GMPLS technology in WDM networks. GMPLS grew out of vanilla MPLS, a packet-switching technology designed to improve the efficiency of data networks. A flavor of MPLS, known as MPLS-TE,...
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