Top PDF Performance Evaluation of Traffic Engineering Signal Protocols in IPV6 MPLS Networks

Performance Evaluation of Traffic Engineering Signal Protocols in IPV6 MPLS Networks

Performance Evaluation of Traffic Engineering Signal Protocols in IPV6 MPLS Networks

In the last years there have been an enormous growth in the use of Internet, and new real-time connection-ori- ented services like streaming technologies and mission- critical transaction-oriented services are in use and new ones are currently emerging. The increased number of Internet users made the popular services Television and Telephone to use the Internet as a medium to reach their customers [1]. However providing the Real-time applica- tions on Internet is a challenging task for the conven- tional IP networks as it uses best-effort services which doesn’t provides guarantee quality of services and Traffic Engineering (TE) [2]. Multi-Protocol Label Switching (MPLS) technology works to solve those shortcomings of IP. MPLS is a new industry development standardized by the IETF from the phrase “multi-protocol” one might imply that MPLS provides support for multiple different protocols. However, the reality is that the emphasis of MPLS has till date been only on supporting the internet protocol. IP is connection less best effort protocol that works effectively in data networks with no QoS require- ments, MPLS merges the flexibility of the IP routing protocols with speed that ATM switches provide to in- troduce fast packet switching in frame-based IP networks [3]. MPLS is not designed to replace IP; it is designed to add a set of rules to IP so that traffic can be classified, marked, and policed. MPLS as a traffic-engineering tool has emerged as an elegant solution to meet the bandwidth management and service requirements for next genera-
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Performance Evaluation of MPLS TE Signal Protocols with Different Audio Codecs for Voice Application

Performance Evaluation of MPLS TE Signal Protocols with Different Audio Codecs for Voice Application

In the last years there have been an enormous growth in the use of Internet, and new real-time connection-oriented services like streaming technologies and mission-critical transaction-oriented services are in use and new ones are currently emerging. The increased number of Internet users made the popular services Television and Telephone to use the Internet as a medium to reach their customers [1]. Voice over IP is also known as IP telephony or broadband telephony. It routes voice conversations over IP-based networks including the Internet. VoIP has made it possible for businesses to realize cost savings by utilizing their existing IP network to carry voice, video and data; especially where businesses have underutilized network capacity that can carry .VoIP at no additional cost on their Local Area Networks Reyadh Shaker Naoum ,Mohanand Maswady [2]. However providing the Real-time applications on Internet is a challenging task for the conventional IP networks as it uses best-effort services which doesn’t provides guarantee quality of services and Traffic Engineering(TE).MPLS technology works to solve those shortcomings of IP. MPLS merges the flexibility of the IP routing protocols with speed that ATM switches provide to introduce fast packet switching in frame- based IP networks [3].MPLS is not designed to replace IP; it is designed to add a set of rules to IP so that traffic can be classified, marked, and policed. MPLS as a traffic-engineering tool has emerged as an elegant solution to meet the bandwidth management and service requirements for next generation Internet Protocol (IP) based backbone networks [4]. WAN bandwidth is probably the most expensive and important component of an enterprise network, Network administrators
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Development of MPLS test-bed for network traffic engineering

Development of MPLS test-bed for network traffic engineering

In IP networks, the Interior Gateway Protocols (IGPs), such as Open Shortest Path First (OSPF), and Intermediate System-Intermediate System (IS-IS) routing protocols use destination-based forwarding algorithm, without considering other network parameters, such as the available bandwidth. In effect, all traffic between any two nodes traverses across the IGP shortest path. Hence, it is obvious that such situation can create hot spots on the shortest distance between two points, while other alternative routes may still be underutilized. As a result, degradation of throughput, and long delay, and packet losses can be noticed. In such situation, minimizing the effects of congestion by optimizing the performance of the operational networks becomes more critical.
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Performance Analysis of Dynamic Routing Protocols in IPv6 and IPv4 Networks

Performance Analysis of Dynamic Routing Protocols in IPv6 and IPv4 Networks

The computer networks are increasingly imposed recently, all sectors currently rely on the protocol Internet Protocol to provide users with remote access, wherever and whenever. IP is currently involved in sensitive areas such as telemedicine, remote sensing, telepresence, electronic payment and so on. IP exists in two version version 4 (IPv4) and version 6 (IPv6), the difference between these two protocols is distinguished in terms of features, operation, and performance. In this article we will measure and evaluate the performance of the two IPv4 and IPv6 protocols in the networks of communicating companies. The study will be performed by varying the routing protocols RIP, RIPnG, OSPF, OSPFv3, IS-IS and IS- IS v6. Our study will be conducted under the OPNET Modeler simulators, the traffic we will exploit for evaluation is VoIP, videoconferencing, and FTP.
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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)

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 signaling 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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Performance Analysis Of Ipv6 Over  Mpls & Mpls-Vpn For Sana’A University

Performance Analysis Of Ipv6 Over Mpls & Mpls-Vpn For Sana’A University

MPLS is essentially a labelling system designed toaccommodate multiple protocols. It was originally presented as a way ofimproving the forwarding speed of routers. The MPLS technology is now emerging as a crucial standard technology that is being used by many ISPs. Traffic engineering and VPN support are examples of two key applications where MPLS is superior toany currently available IP technology. There are several researches that have been concentrated on theMPLS network performance over thelast decade.Therefore, this sectionintroduces the reader to basic concept and terminology about MPLS and VPN.Awais[5], studied on an enable the traffic- engineering concept using IGP for delay sensitive traffic which performs better for delay sensitive traffic using MPLS. His proposed solution is validated using OPNET.
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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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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

Internet Protocol (IP) allows a global network among an endless mixture of systems and transmission media [2][7].The IP was created as a connectionless network layer protocol that makes no attempt to discriminate between various application types [6][9]. The main function of IP is to send the data from the source to destination. Data is constructed as a series of packets. All the packets are routed through a chain of routers and multiple networks to reach the destination. In the Internet, router takes independent decision on each incoming packet. When a packet arrives at a router, the router has to consult its routing table to find the next hop for that packet based on the packets destination address in the packets IP header (longest match prefix lookup), as explained in Fig. 1 [2][10][11]. To build routing tables each router runs IP routing protocols like Border Gateway Protocol (BGP), Open Shortest Path First (OSPF) or Intermediate System-to-Intermediate System (IS-IS). When a packet traverses through the network, each router performs the same steps of finding the next hop for the packet until it reach the destination [7][12]. As a result traffic is concentrate across a smaller
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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

MPLS is likely used in VPNs due to the distinguished merits, e.g., fast forwarding, tunneling etc. MPLS VPN networks provide full address and traffic separation, and hide addressing structure of the core network and the VPNs. It is not possible from the outside to intrude into the core network or VPNs by abusing the MPLS mechanisms. Neither is it possible to intrude into a properly secured MPLS core. There is, in fact, one significant difference between VPNs based on MPLS and those based on Frame Relay or ATM. That is, the control structure of the core is on Layer 3. This initially raised concerns that the architecture could be open to DoS attacks from other VPNs or the Internet. This paper has demonstrated that it is possible to secure an MPLS infrastructure as that of ATM or Frame Relay services. It is also possible to offer Internet connectivity to MPLS-based VPNs in a secure manner.
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Performance Comparison of MPLS TE Networks with Traditional Networks

Performance Comparison of MPLS TE Networks with Traditional Networks

Traffic Engineering is that component of network engineering which addresses the consequence pertaining to performance rating and optimization of IP networks [9] [10]. The term traffic engineering is broadly utilized as part of the voice communications over telephone. TE aims that the traffic is estimated and investigated. At that point a statistical model is applied to the movement of traffic in order to arrive at a prediction and make estimations. On the off chance that the foreseen movement design does not coordinate well with the network resources the network executive rebuilds the activity design. Such choices can be made to accomplish a more ideal utilization of their own assets or to diminish costs by choosing a less expensive transit carrier. MPLS TE is an answer for IP steering issue as MPLS TE gives proficient spreading all through the system, maintaining a strategic distance from underutilized and over-utilized links [11]. It additionally considers the configured(static) data transfer capacity of connections(bandwidth). It considers link properties (like delay, jitter) and adjusts naturally to changing data transfer capacity and connection qualities. Moreover, traffic is bounded to source based routing in traffic engineered networks as opposed to destination based routing in conventional IP routes.
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Performance Evaluation of Routing Protocols in Wireless Mesh Networks

Performance Evaluation of Routing Protocols in Wireless Mesh Networks

In fixed topology, simulation results shows that, ETT value (in m seconds) is constant at network size is 50. Increasing the network size, ETT value also increases .The performance of DSR and AODV are Similar at network size is 1000.When network size increases, the ETT of DSDV also increases shown in figure 16.In random topology, the simulation results shows that the ETT values are similar at network size is 100.When network size increases the performance of AODV and DSR are better than DSDV shown in figure 17.ETT retains many of the properties of ETX.ETT still does not consider link load explicitly and therefore cannot avoid routing traffic through already heavily loaded nodes and links. ETT was not designed for multi-radio networks and therefore does not attempt to minimize intra-flow interference.
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Analysis and performance evaluation of resource management mechanisms in heterogeneous traffic cognitive radio networks

Analysis and performance evaluation of resource management mechanisms in heterogeneous traffic cognitive radio networks

Figures 6 and 7, respectively, show the maximum Erlang capacity and the normalized mean transmission delay as function of the utilization factor of primary channels (defined as the ratio between the primary car- ried load and the total number of primary channels). From Fig. 6, it is observed that, for all the analyzed spectrum adaptation strategies, as the utilization factor of primary channels (hereafter denoted by ρ) increases, the Erlang capacity decreases. This is an expected result due to the fact that as the primary traffic load increases, more secondary calls are interrupted in detrimental of system performance. Figure 6 shows that, for values of ρ less than about 0.2, our reference strategy (E3) dimin- ishes this effect compared to the other strategies. On the other hand, the improvement due to the use of spectrum adaptation can be quantitative and qualitatively obtained from Fig. 6 by comparing strategy E2 versus strategy E1. For instance, for a value of ρ = 0.2, the Erlang capacity of strategy E2 increases 30.5% compared to the one achieved by strategy E1. Also, capacity improvement due to the jointly use of new data call buffering and double preemptive mechanisms can be obtained by comparing strategy E3 versus strategy E5. For instance, for a value of ρ = 0.2, the Erlang capacity of strategy E3 increases 70.2% compared to the one achieved by strategy E5. In general, Fig. 6 shows that, for values of ρ smaller than about 0.2, our reference E3 strategy considerably outper- forms all the other strategies. For instance, for a value of ρ = 0.2, the Erlang capacity of strategy E3 increases 60% (72%) compared to the one achieved by strategy E2 (E4). This is mainly due to the use of a buffer for new second- ary data calls; this buffer allows the strategy E3 (com- pared against strategies E2 and E4) to exploit more efficiently the elasticity of data traffic in benefit of sys- tem capacity. Figure 7 shows that this capacity gain is
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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

Abstract: Multiprotocol Label Switching (MPLS) is an evolving standards-approved technology to increase the speed of the network traffic flow and making the network easier to manage. In MPLS a specific path is set up for a given sequence of packets, identified by a label put in each packet, thus saving the time needed for a router to look up the address to the next node to forward the packet. MPLS is called multiprotocol because it works with the Internet Protocol (IP),Asynchronous Transport Mode(ATM), frame relay network protocols.

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Performance evaluation of multicast routing on IPv4 and IPv6 networks

Performance evaluation of multicast routing on IPv4 and IPv6 networks

For all the tests conducted in all the four scenarios, a few sample results were obtained from a multicast receiver in the same subnet as the source and consistently, the jitter was 0 ms in most cases and less than 2 ms in other cases. So it can be concluded that any variation in latency and packet loss was caused due to the routing of the multicast traffic across the four routers. This result is significant in this dual-stack scenario, where the multicast receiver residing in the same subnet as the source has negligible jitter and packet loss. A screenshot of an IPv4 host on the same subnet is shown below:
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A Survey on Power Optimization in Mobile Adhoc Network(MANET)

A Survey on Power Optimization in Mobile Adhoc Network(MANET)

22. Bagwari et.al (2012) analyzed the performance of reactive routing protocol via increasing number of nodes and observing its effect on Quality of Service (QoS) of Mobile Ad-hoc Network. As we know routing protocols make an important role for improving QoS in Mobile Ad-hoc Network. The QoS depends upon several parameters like end-end delay, throughput, date drop and network load. The reactive routing protocol which we are considering is AODV for this scenario with MCHG. Here we are observing performance of Routing Protocol via enhancing the network size on the basis of following parameters: delay, throughput, traffic sent, traffic received, data dropped and network load. Network simulation tool used in simulation is OPNET Modeler (Ver. 14.0). Finally, this paper conducts simulation experiments in the conditions where we can improve QoS of MANET Network performance. 23. Gouda et.al (2013) presented a paper to enhance the network performance of different routing protocols, when frequent link failure in network due to mobility of the nodes in the network. The performance analysis and simulation are carried out to evaluate network performance using Network Simulator (NS-2), based on the different load, node mobility, delay, packet sending rate and energy consumption. It has been verified through various simulations, which represent a wide range of network conditions that energy AODV deliver the better performance as that of the modern protocols DSDV, TORA, DSDV, DSR and AODV in terms of energy efficiency but it is observed that DSR needs significantly smaller energy overheads than other protocols.
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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

MOS is an acronym that stands for „Mean Opinion Score‟. It is calculated over IP SLA to simulate the quality that customers are getting. For the number of packet injection ranging from 1 to 20 (see figure 6 ), both MPLS-TE and QoS-DS deliver very close experiences to the users which generated the subjective response measured as a MOS value that kept staying close to 4.3. This value means that there is barely any impairment felt by the users but it is not worth mentioning or enough to complain about as it is thinly perceivable. Getting closer to 100, MOS values for both configurations showed a slight but sudden fluctuation that dropped the score to a bit below 4 for MPLS-TE which is still good while it reached 3.5 for QoS-DS which shows that users are still okay with the service but are perceiving a slightly annoying impairment. Farther into the plot, the real difference between both implementations starts to show. For packet numbers going as high as 2000, QoS-DS kept its MOS score higher than 3 which means that users are perceiving some quality impairment but that inconvenience is only slightly annoying. However, MPLS-TE‟s scores reach rock bottom with a very bad value of 1 which just means that the assistance team would be receiving complaints all day until these conditions change. The behavior of DS-TE judged by its tested MOS value variations shows very similar results to the ones shown and explained for ICPIF. Figure 6 still shows a very similar plot variation to those of MPLS-TE with relatively better results that are hypothetically a few steps towards QoS-DS‟s due to the QoS filter-like configuration set up at the tunnel‟s head end. However, QoS-DS is still a lot better in this regard
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Comparison Between Ipv4 And Ipv6 Using Opnet Simulator

Comparison Between Ipv4 And Ipv6 Using Opnet Simulator

International organization of Scientific Research 47 | P a g e Fragmentation in IPv6performed by the host only. For this reason the delay of IPv6 is bigger than the delay in IPv4but with a small difference. The IPv6 has a higher Delay than IPv4because IPv6hasa larger header field. IPv6has a smaller header field, the curve takes latency of the time in the beginning before the Guide to up, because the devices in the state start on then curve Guide to high because the devices are requesting at the same time. Delay has inverse relationship the number of devices.
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Effectiveness of Routing Protocols for Different Networking Scenarios

Effectiveness of Routing Protocols for Different Networking Scenarios

Packet size is a considerable issue for energy constrained and performance evaluation of a network. Because of larger size of packets, data bit corruption creating higher frequency of re- transmission may be caused. And bigger packet might have problem if it is above the size of MTU (Maximum Transmission Unit). Moreover, NIC (Network Interface Controller) and OS has memory size restriction [14]. On the other hand, small size packets are more efficient but creating too short packet size might cause faults, like higher overhead and startup energy consumption for each packet can degrade the network performance. Besides, small size packets have issues with fragmentation and security problem. For this reason, Packet length for protocols and combination of the protocols in three different networks is measured to evaluate the particular networking system.
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PERFORMANCE ANALYSIS OF INTERIOR GATEWAY PROTOCOLS

PERFORMANCE ANALYSIS OF INTERIOR GATEWAY PROTOCOLS

Routing is usually performed by a dedicated device called a router. Routing is a key feature of the internet because it enables messages to pass from one computer to another and eventually reach the target machine. Each intermediary computer performs routing by passing along the message to the next computer. The most commonly used routing protocols are RIP (Routing Information Protocol), OSPF (Open Shortest Path First) and EIGRP (Enhanced Interior Gateway Routing Protocol). These are the interior gateway routing protocols that have been developed for IP networks and it is used to exchange routing information within autonomous systems. Performance analysis of interior gateway protocols in IPv6 networks is done in terms of Convergence time and Packet loss.
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