Top PDF Traffic Engineering through MPLS in Service Provider Networks

Traffic Engineering through MPLS in Service Provider Networks

Traffic Engineering through MPLS in Service Provider Networks

Adding RSVP to MPLS allows router to function as a transit or egress LSR in support of RSVP-signaled LSP’s. Additional configuration is needed for the router to function as ingress LSR. In a similar manner all the operations are also performed in Sydney, Saopaulo, Sanjose, Montreal, London, Hong-Kong, Denver, and Amsterdam

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Analyzing the usage of Network Resources using MPLS Traffic Engineering (TE)

Analyzing the usage of Network Resources using MPLS Traffic Engineering (TE)

The paper work has explained the efficient resources implementation in MPLS network. The results of simulation describe that the performance of traffic engineering parameters i.e. throughput, packet delay etc. in MPLS network is much better and very static in comparison of conventional IP network. The network resources are examined at their optimal performance with the support of Traffic engineering. Also the service end to end quality is also being confirmed. In this research paper, the comparison of performance metric of IP model and MPLS-TE networks is done. Performance parameters that are compared involves end to end delay, throughput (packet send and receive), FTP response time. It is clearly noted that MPLS-TE performance is better as compared to IP network model. In the situation of heavy load such as high traffic, the MPLS-TE performance is again better.
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MPLS Traffic Engineering in ISP Network

MPLS Traffic Engineering in ISP Network

Multi Protocol Label Switching (MPLS) is an innovative and vibrant technology. The most famous applications of MPLS technology are MPLS VPN, MPLT Traffic engineering and MPLS QoS and Any Transport over MPLS (AToM). This study addressed only MPLS Traffic engineering, which is one of the driving factors of deploying MPLS in service provider networks. This research consists of two main sections; in the first section basic concepts of MPLS have been reviewed and in the second section, implementation of the MPLS based ISP network, configuration and verification of the results are covered. Simulation results show that on large service provider networks, no other technology can engineer traffic as efficiently as MPLS does. This research aims to provide guidelines for network engineers for efficiently engineering network traffic in the service provider network.
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Performance Evaluation of Traffic Engineering Signal Protocols in IPV6 MPLS Networks

Performance Evaluation of Traffic Engineering Signal Protocols in IPV6 MPLS Networks

Traffic Engineering is the process of selecting network paths so the traffic patterns can be balanced across the various route choices. The use of LSPs in MPLS can help balance the traffic on network link event [3]. It allows a network administrator to make the path deterministic and bypass the normal routed hop-by-hop paths. An adminis- trator may elect to explicitly define the path between stations to ensure QoS or have the traffic follow a speci- fied path to reduce traffic loading across certain hops. In other words, the network administrator can reduce con- gestion by forcing the frame to travel around the over- loaded segments. Traffic engineering, then, enables an administrator to define a policy for forwarding frames rather than depending upon dynamic routing protocols, traffic engineering is similar to source-routing in that an explicit path is defined for the frame to travel, however, unlike source-routing, the hop-by-hop definition is not carried with every frame [11].
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A SURVEYON MPLS BASED TRAFFIC ENGINEERING MECHANISM

A SURVEYON MPLS BASED TRAFFIC ENGINEERING MECHANISM

quality of service (QOS) for serious traffic such as real-time multimedia contented delivery. Traffic engineering is approaches can be classified into Multiprotocol Label Switching (MPLS) based on pure IP-based. In an MPLS is able to support severe end-to-end bandwidth guarantee for multimedia contented delivery. While MPLS is a power full technology for creating overlay networks to support any specific routing strategy, it also exclusive and suffers potentially from scalability problem in terms of LSP state maintenance. IP multicast has always been considered as an efficient paradigm for real-time multimedia group statement. MPLS based multicast TE has become a subject of interest, with a number of relevant research work will available.
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Implementation of Traffic Engineering in MPLS Networks by Creating TE Tunnels Using Resource Reservation Protocol and Load balancing the Traffic

Implementation of Traffic Engineering in MPLS Networks by Creating TE Tunnels Using Resource Reservation Protocol and Load balancing the Traffic

MPLS enhance the performance of the network by using signaling protocols for traffic engineering. Through the signaling protocol, traffic engineering selects the network paths for forwarding the packets to the routers in a balanced manner. This paper explains the study of performance analysis of Constraint-Based routed LDP signaling protocol and Resource Reservation Protocol -TE signaling protocol. This paper has demonstrated that the MPLS system using CR-LDP TE signal convention has a visible execution favorable position contrasted with the MPLS system using RSVP TE signal convention as far as the quantity of got voice packets and the quantity of kept up calls with both GSM and PCM codecs. This is for the most part because of the poor adaptability of RSVP convention came about because of the additional activity prerequisites for intermittent refreshment of movement, high LSP disappointment recuperation movement and RSVP messages to keep up the positions in all LSR.
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Performance Analysis of Multimedia Traffic over MPLS Communication Networks with Traffic Engineering

Performance Analysis of Multimedia Traffic over MPLS Communication Networks with Traffic Engineering

number of optimized data paths to the detriment of other links, which frequently remain underutilized. All arriving data flows on various ingress interfaces on the same node that are bound for the same destination are always consolidated across a common path. The compounded effect of concentrating large data flows across a small number of links often produces traffic bottlenecks. Even in the face of congested links, traditional routing protocols will continue to forward traffic across these same paths until packets are dropped. To accommodate highly interactive application flows with low delay and packet loss thresholds, there is a clear need to more efficiently utilize the available network resources. The process whereby this is accomplished is known as traffic engineering and MPLS provides these capabilities [6].
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A Short Study on MPLS with Internet Traffic Engineering

A Short Study on MPLS with Internet Traffic Engineering

The Multi-Protocol Label Switching (MPLS) was originally presented as a way of improving the forwarding speed of routers but is now emerging as a crucial standard technology that offers new capabilities for large scale IP networks, MPLS is an advanced forwarding scheme. It extends routing with respect to packet forwarding and path controlling. Unlike legacy routing, MPLS (e.g. Fig.2) uses labels to forward traffic across the MPLS domains. When packets enter the MPLS domain, labels are imposed on the packets, and the label (not the IP header) determines the next hop, labels are removed at the egress of the MPLS domain. The traffic engineering, the ability of network operators to dictate the path that traffic takes through their network, and Virtual Private Network support are examples of two key applications where MPLS is superior to any currently available IP technology.
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Proof of Concept of DiffServ-aware MPLS Traffic Engineering: A VoIP-based approach

Proof of Concept of DiffServ-aware MPLS Traffic Engineering: A VoIP-based approach

MPLS-TE (Traffic Engineering using MPLS) offers the needed tool to redirect the traffic through the network in a pre-defined manner through the establishment of a logical interface called tunnel.There are two ways to define a tunnel but can be semantically extended to three. The Dynamic tunnel is the method where MPLS-TE is always enabled but only goes into action when the network needs it. Moreover, the route choice is selected automatically using PCALC with no user needed to specify any rules. The Explicit tunnel is the manual type of tunnel definition. An MPLS-TE tunnel can be created between any pair of machines in network. However, for the case of a core network or VPN, it has to be done between PEs (Provider Edges). It is very similar to static routing with the major difference residing in the fact that only runs on the tunnel‟s head end. To reach its destination, the tunnel needs a hop-by-hop explicit route. The Multiple pathis the final method which is simply the combination of both previous types with an introduction of a preference rule so that one picks up when the other fails.MPLS-TE relies on RSVP to define the bandwidth assigned to the logical Tunnel interface in order to reserve the needed resources. [4]
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Development of MPLS test-bed for network traffic engineering

Development of MPLS test-bed for network traffic engineering

teknologi yang sedang berkembang dimana ia menyediakan ciri-ciri QoS dan TE dalam rangkaian Protokol Internet (IP). Kajian tesis ini tertumpu bagaimana membangunkan rangkaian-uji MPLS (MPLS test-bed) bagi menilai fungsi-fungsinya. Dengan objektif membangunkan rangkaian-uji MPLS, sistem operasi Linux dengan kernel versi 2.6.5 diperlukan sebagai asas pembangunan. Dalam kajian ini pakej perisian MPLS versi 1.946 telah digunakan untuk membangunkan router yang berfungsi sama seperti router yang terdapat dalam domain MPLS dan ia dipanggil sebagai Router Pensuisan Label (LSR). Setelah router siap dibina, penyambungan antara dua router dilakukan untuk menyediakan Laluan Label Tersuis (LSP). Penyambung LSP ini juga turut digunakan untuk membina satu LSP baru yang menghubungkan ingress router dan egress router. Paket-paket IP dihantar dari ingress router ke terminal host bagi mengesahkan
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Verification of MPLS traffic engineering techniques

Verification of MPLS traffic engineering techniques

In tenrs of the maximum packet loss statistics as shown in Figure 5, in group 39, MPLS MaxResidual still can perform without experiencing packet loss, whilst OSPF and MPLS MinCost exhibi[r]

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A Survey on Network Access Technologies for Global Network System Integration

A Survey on Network Access Technologies for Global Network System Integration

LEO satellite networks are likely to play an important role in the future Internet. It has been identified in the literature that communications infrastructure of the future will be characterized by the seamless integration of IEO satellite networks with broadband networking techniques in order to support multimedia services and provide global coverage as well as different types of traffics to be heterogeneously distributed to the world population. Based on the above criteria, ATM satellite networks and other selected terrestrial networks have been critically analyzed and their characteristics compared. Our survey studies have shown that: (a) ATM satellite networks have the capabilities of MPLS-based traffic engineering, Hence, the current trends are to use ATM technology as the underlying infrastructure for the next generation of enterprise and Global-IP networks;(b) Competing companies worldwide are migrating to 3G wireless as fast as possible in various steps using them as building blocks for the deployment of the next generations of mobile networks; (c) The cable TV networks, although started as a video service provider, has moved to the business of Internet access, and often the telephone business;(d) Recently,mobile applications are becoming very important ,Internet-based applications are becoming adapted to cellular systems, I-mode and WAP communications services are being provided to people living in rural areas; (e) The emerging wireless LANs have provided large bandwidths of data up to 11 or 54 Mbps; (f) Of course IEEE 802.11 LANs are not everywhere, but as more businesses open up in cities and rural areas, organizations may decide to install base stations for their employers and customers;(g) At best , due to limited range of WLANS, rural area farmers may resort to dual-mode wireless devices that use 802.11 if they can pick up a signal and fall back to WAP if they cannot;( h) The problem of full integration and the rate at which large amount of information must be updated for both the terrestrial networks and constellations networks as well as throughput constraints that lies in the limited capacity of the earth-space air interface will benefit if a Multipurpose Label Switching technique is deployed.
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Implementation of Multi Protocol Label Switching – Virtual Private Network for Corporate Networks

Implementation of Multi Protocol Label Switching – Virtual Private Network for Corporate Networks

ABSTRACT: Recently MPLS is used for building up VPNs in IP backbone, called MPLS VPN. To provide people with voice, data and all categories of multimedia services, distinguishing between data flows is a requirement. To address these router performance, Quality of Service and traffic engineering issues, Multi - Protocol Label Switching (MPLS) was proposed for IP based internetworks. To achieve the security that is required for corporate users, Virtual Private Networks (VPNs) can be used to guarantee that traffic is securely tunneled over the Internet. MPLS based VPNs enable connectionless routing within each VPN community. This paper discusses the benefits available in IP VPNs and how the MPLS+BGP model is selected in the network. Then how a branch office connects itself to other offices using MPLS VPN services delivered by a service provider.
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Evaluating the performance of network traffic for providing real time applications in an Internet Protocol network and Multi Protocol Label Switching Network

Evaluating the performance of network traffic for providing real time applications in an Internet Protocol network and Multi Protocol Label Switching Network

It ensures the efficient and reliable delivery of the Internet services with high transmission speed and lower delays. The main feature of MPLS is the concept of Traffic Engineering (TE), which is used for effectively managing the networks for efficient utilization of network resources. This technology is more suitable for implementing real-time applications such as voice and video due to lower network delay, efficient forwarding mechanism, scalability and predictable performance of the services provided by MPLS. In this paper the performance of voice over internet protocol in MPLS and non MPLS network is compared. Here we consider non-MPLS network as conventional IP network. In order to simulate the network we use Optimized Network Engineering Tool 14.5 and comparison is made on various parameters such as Ethernet delay, voice jitter, voice packet end to end delay.
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Performance Analysis of MPLS network with Traditional IP Network in Service Provider Environment

Performance Analysis of MPLS network with Traditional IP Network in Service Provider Environment

Layer 2 services (ATM, Ethernet, frame relay) can carried over the MPLS core Simplified network management through elimination of multiple layers MPLS has become popular due to its capability to form multi-service networks with high speed. It can support pre-provisioned routes that are virtual circuits known as Label-Switched Paths (LSPs), across the network. Provision for backing up multiple service categories containing different forwarding and drop priorities, is also available with this technology. Multiprotocol label switching addresses common networking problems such as scalability, speed, Quality of Service (QoS), and traffic engineering, and provides them a viable and effective solution. Owing to its versatility, MPLS has emerged as a solution capable of meeting bandwidth and other service requirements for IP-based networks. Scalability and Routing -based issues can be resolved by MPLS technology, which also has the capacity to exist over existing ATM and Frame relay networks. Considering the positive points and shortcomings of ATM, MPLS technologies were designed to provide more leverage to network engineers and to be deployed flexibly. The marketplace is constantly being replaced with new technologies and technology devices. MPLS came to the forefront when there was a requirement for a protocol that needs less overhead and at the same time provides connection oriented-services for frames of variable length. Technology such as ATM and frame relay has been replaced in many areas by MPLS technology, which combines many options to satisfy the MPLS has dispensed cell-switching and signaling protocol used by ATM. Concurrently, Multiprotocol label switching technology continues to maintain the traffic engineering and bandwidth control, which was popularized by ATM and frame relay in large-scale networks. Migration to MPLS technology is beneficial especially since the benefits of traffic management are important. Performance level increases and so does reliability.
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Capacity planning of survivable MPLS networks supporting DIFFSERV

Capacity planning of survivable MPLS networks supporting DIFFSERV

For each O-D pair k, only one BE demand pair is defined, which can be looked as the aggregation of multiple BE demands with the same O-D. Unlike EF traffic, we allow the traffic within a single BE demand to split arbitrarily across any number of candidate LSPs, therefore the aggregation of BE traffic would potentially improve the effectiveness of traffic engineering. However, we assume only one backup path will be used for traffic on the same working path. We assume that the BE traffic may not be fully restorable in case of link failure. BE traffic restoration level r, a value between [0,1], represents the proportion of BE traffic on each link that is being protected. The ability to set the restoration level of BE traffic and accordingly differentiate the resilience level provides a powerful tool to the service provider. It allows the ISP to clearly demonstrate the advantage of premium service based on EF class, and also allows the ISP to fine tune the redundancy level and total network cost.
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Upgrading Internet Service Provider using Multi Protocol Label Switching and Virtual Private Network

Upgrading Internet Service Provider using Multi Protocol Label Switching and Virtual Private Network

technique MultiProtocol Label Switching (MPLS) and virtual private network (VPN) to internet service provider domain. It reduces IP routing path promoting traffic engineering and guaranteed quality of service to the customer. With the help of autonomous system boundary router (ASBR) the private customer are connected to the service network. In this method the ASBR use MP-eBGP (MultiProtocol –Exterior Border gateway protocol) to exchange the routing information between autonomous system. The Virtual Routing and Forwarding (VRF) maintains the routing information of the neighboring customer sites and delivers the IP packets with unique addressing format . We came up with an idea of designing an upgraded Inter-provider service network (ie) connecting multiple ISP with the private network mechanism which provide global reachability. The simulations that are done in Graphical Network Simulator software (GNS3) are well suited for emulation of the real network environment. The resultant networks are obtained by verification command for check of the end to end connectivity and monitor the traffic flows.
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Performance Evaluation of MPLS in a Virtualized Service Provider Core (with/without Class of Service)

Performance Evaluation of MPLS in a Virtualized Service Provider Core (with/without Class of Service)

Within this thesis, I use performance metrics such as Packet Loss and Round Trip Time within the Junos RPM suite to comprehensively analyze the performance of Quality of Service and Fast Reroute in virtualized service provider networks. This thesis also explores how real-time traffic performs across eight different network scenarios. In order to validate the eight network models, Juniper Networks virtual SRX (Firefly Perimeter) running on VMware Fusion as the chosen hypervisor is used. Junos RPM is then enabled which helps me track and analyze the performance of real-time applications like voice, video and data in a virtualized service provider core. With respect to the comparative analysis, I found, a trade- off exists when introducing QoS in virtualized networks. When QoS is enabled, we see increased packet drops during periods of high congestion, however we gain an advantage in having lower Round-Trip Times. On uncongested paths, we see similar results when QoS is enabled when compared against QoS disabled scenarios. Based on the testbed created for this thesis, we can observe that a significant advantage is not gained to minimize packet loss during failover scenarios when using Fast Reroute for real-time traffic.
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Analysing the usage of Network Resources over a Next Generation Network Using MPLS

Analysing the usage of Network Resources over a Next Generation Network Using MPLS

ABSTRACT: Traffic Engineering is a way of propagating data over the network in place of management view, existence of resources and the current and required traffic. It also supports the network supplier to make the best utilization of existing resources. Different utilization of internet needs various levels of facilities to be provided, for example voice traffic needs less delay and very less delay variation. Video traffic requires high bandwidth, etc. Hop- by-hop mechanism is utilized to send a packet in a network employing IP protocol. Routing protocols are employed to make routing tables, to discover a route which has the lesser cost, with respect to its metrics to every destination in the network. This method results in the over-usage of some connections while other connections remain unemployed and are under-used, which causes to the network congestion. MPLS does not send data depending on destination address instead it forwards data according to the labels. Utilizing MPLS network, resources can be analyzed by routing data by less congested route instead of the shortest route utilized in routing protocols. These new routes are produced by hand or by various signalling protocols. MPLS provides support to many characteristics i.e. traffic engineering, VPNs and QoS etc. By using MPLS in traffic engineering we can increase the use of network resources building it more effective. In this research paper a comparison evaluation is done depending on parameters of traffic engineering i.e. effective utilization of bandwidth, throughput and delay etc. for various kind of traffic in their movements throughout the network for both MPLS-TE and conventional IP network. RIVERBED simulator is employed to model the comparison results.
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Review on QoS Improvement with MPLS Mechanism in NGN

Review on QoS Improvement with MPLS Mechanism in NGN

Abstract: This review paper mentions that the appearance of new uses underlines the need for a greater quality of service (QoS) not only for conveying accurately or increasing certain traffic, but also conveying it as soon as possible, which implies a network management even more complex. These lead to development of technology known as Multi- Protocol Label Switching (MPLS). Due to the MPLS technology mechanisms traffic engineering, QoS and security become possible for IP network to be efficient. Various methods of engineering of traffic for IP networks have been specified for several years (such as DiffServ (Differentiated Services), IntServ/RSVP (Integrated Services / Resource Reservation Protocol) to get end-to-end quality of service but MPLS is found simple, scalable and better among them. This allows the traffic in network to manage in a more effective way and avoid the cases of congestion. In this review paper principle operation of MPLS is discussed. We strongly focus on the importance of the MPLS used for the transport of the IP datagram and the traffic as well as underlined the advantages of MPLS utility in the IMS platforms to provide guarantees of QoS from beginning to end. At the end of this review paper simulation results from an MPLS network is mentioned.
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