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Ethernet based secure VPLS (Virtual Private LAN Services) networks require to establish full mesh of VPLS tunnels between the customer sites. However, the tunnel establishment between geographically distant customer sites introduces a significantly high delay to the user traffic transportation.In this article, we propose a novel fast transmission mechanism for secure VPLS architectures to reduce the...
MPLS-Traffic Engineering (MPLS-TE) provides many recovery mechanisms such as rerouting and protection. Existing one-to-one backup and path-based backup schemes are not resource efficient. We propose Common Protection Path (CPP), a novel protection scheme which selects a common protection path for traffic demands having the same ingress and egress routers. CPP also factors in path failure probability...
In this paper a new fault tolerant multi disjoint path routing algorithm is proposed based on AHP decision making method in IP/MPLS networks. Metrics for decision are bandwidth, delay and our defined availability factor. According to our algorithm, more reliable multi paths are found from source to destination in the network. Multi disjoint paths are selected in these steps: First, a given source...
Service providers are experiencing a challenge that is caused by the explosive growth in demand for high-speed connections to and across metropolitan, regional and core networks. Operators are under pressure to increase the capacity of their networks to meet these ever growing requirements. To improve service agility and network efficiency and reduce costs throughout their entire infrastructures,...
The explosion of internet-like data traffic and services (voice, video, multiplayer games, download, etc.) is fueling the demands for higher mobile telecom network capacities. Traditionally, mobile operators are used to add new transmission links and equipments to satisfy the traffic increase. However, this solution is firstly expensive in terms of capital and operation and secondly inadequate with...
We present a lab Trial to provide Ethernet services over a packet transport network using coordinately operated GMPLS control and management planes to support dynamic provisioning and restoration of MPLS-TP tunnels and pseudowires.
Progress in the development of communication network technology continues apace and Ethernet technology, once limited to local area network applications, is increasingly being considered for use as the backbone technology for wide area communication networks. The technology, most commonly referred to as “Carrier Ethernet”, seems likely to become the dominant technology within wide area networks ultimately...
Our research study in this paper focuses on supporting differentiated resilience services in IP/MPLS-over-WDM networks with minimum resources while guaranteeing the quality in provisioned services (QoS) for subscribers. This has been achieved through our multilayer scheme which supports dynamic traffic grooming associated with constrained differentiated resilience. This scheme incorporates an intelligent...
This paper describes the principles of QoS communications, analysis the requirements of how voip to provide QoS guarantees, clarify the major problems it's facing now. And proposes the solution to the problem of latency, jitter, packet loss and echo effects, with the same time introduces several of the QoS model that can improve the qos of voip, discusses their respective advantages and shortcomings,...
This paper presents an overview of the current service delivery models that exist in the Internet, covering also the motivation that triggered the introduction of each model separately. Different Quality of Service (QoS) frameworks like Integrated Services (IntServ), Differentiated Services (DiffServ) and Multiprotocol Label Switching (MPLS) are presented taking into consideration also the alteration...
There are many challenges in the QoS controls and traffic handling mechanisms in the deployment of Long Term Evolution (LTE). Simulations are crucial for performance evaluation of end-to-end QoS (Quality of Service) management across LTE network elements over heterogeneous networks. The LTE CoS/QoS Harmonization Emulator presented in this paper will allow the user to determine whether the QoS design...
the increased use of virtual connections in packet switched networks, in particular over the Internet, using MPLS and GMPLS evolution has produced a significant amount of studies on traffic engineering protocols, especially with regard to the different ways to provide quality of service over connections. This article presents a model to characterize the reliability of these types of networks, in computing...
MPLS networks use label technique for data transmission. For the rerouting mode, the backbone network demands short restoration time and the QoS guarantee. This paper proposes a new MPLS Fault Restoration Algorithm called NRRA based on Simulated Annealing and Tabu Search. When faults appears in the path, the algorithm can calculate a new optimal path with the new network state again, and the new path...
In this paper we show data plane restoration measurements for restoration under backbone link failures for a large network with IP/MPLS OSPF routing and also for the same backbone with Traffic Engineering (TE) and Fast Reroute (FRR) deployed. Our study is unique as we analyzed a significant quantity of measurements obtained from a production network over a 14-month period encompassing many link failures...
This paper proposes a handover scheme supporting Multi-Protocol Label Switching (MPLS) in a Proxy Mobile IPv6 (PMIPv6) domain that improves the mobility and gives Quality of Service (QoS) and Traffic Engineering (TE) capabilities in a mobile MPLS access network. The proposed scheme takes advantage of both PMIPv6 and MPLS. PMIPv6 was designed to provide Network-based Localized Mobility Management (NETLMM)...
In this paper, we propose a high-speed packet transmission mechanism using source switching label information. In the proposed mechanism, switches within core network can simply switch packets to next port using source switching label information since ingress nodes transmit packets inserting the end-to-end path information in label header. Unlike MPLS (Multiprotocol Label Switching), it is unnecessary...
In this paper a flow-based model balancing queues at the nodes of MPLS-network is proposed. The novelty of the model is that it, in the contrast to the previously known models takes into account the features of the Traffic Engineering Queues technology. This technology has a purpose to ensuring load balancing of the node buffer resource.
This paper focuses on the problem of coherent resource allocation within home and access networks. The interdomain QoS signaling discussed here enables the initiation of the QoS provisioning in the home and access from the end device in users home. The home network considered in this paper is UPnP-QoS enabled while the access network is GMPLS based. We propose and implement an interface between aforementioned...
This paper proposes an adapted crankback-enabled post-fault restoration scheme against large-area failure events in multi-domain DWDM optical network. This novel solution provides recovery and resource efficiency without increasing routing overheads.
This paper presents three innovative GMPLS/PCE/OBST interworking archi-tectures for mesh metro networks which deliver guaranteed contention-free sub-wavelength services with enhanced channel utilization, yet enabling multi-technology interoperability.
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