Ethernet Delay Research Articles

Performance Evaluation of Routing Protocols in Enterprise Networks

This paper evaluates the performance of routing protocols such as OSPF, EIGRP and IS-IS in an enterprise network. Routing protocols are rules that govern the best route to transfer data between various nodes in networks. These rules are used in the transmission of information from the transmitting end to the receiving end. Routing protocol's main responsibility lies in determining the best way routers communicate with each other in order to forward any kind of network traffic using the optimal path. The evaluation of routing protocols was achieved by measuring packet end-to-end delay, packet delay variation, Jitter, Ethernet delay, traffic sent and received parameters by employing OPNET simulator software using Http, Video conferencing and Voice data types. The results shows that OSPF_IS-IS combined protocols outperforms the of OSPF_EIGRP and OSPF protocols by 60%.

Performance Analysis of Routing Protocols On IPv4 and IPv6 Addressing Networks

With IPv4 addresses being exhausted, network engineers and researchers are encouraged to adopt IPv6. But before using the IPv6 network directly, engineers need to test their hardware and network performance under new conditions of IPv6 as it has an extended address, high complexity, overhead performance, and IPsec complications. As routing protocols play a crucial role in network performance, it leads to a network’s extended performance by finding the shortest path, good throughput, and lowest delay. As the specifications, viz. frame structure for IPv4 and IPv6 are entirely different, there are modified routing protocols specified for IPv6. Routing Information Protocol (RIP) and Routing Information Protocol Next Generation (RIPng) are distance vector routing protocols and use hop count as a cost. In this paper, we have used RIPng on the IPv6 addressing network and RIP on the IPv4 addressing network and then analyze and compare them on the basis of different performance parameters. For this comparison, three different applications – File Transfer Protocol (FTP), DB Query (DataBase), and electronic mail (e-mail) – are set on a network consisting of three different subnets, each having a diverse network topology. The performance parameters analyzed are global and object statistics, viz. ethernet delay, number of hops, applications response time, background traffic delay, traffic dropped, point-to-point links throughput, links utilization, and links queuing delay. The experimental results determine the strength of the routing protocols. Thus, the quantitative results give the option to choose the routing protocol according to the network scenarios. In terms of ethernet delay, traffic dropped, network convergence, and security, it is found that the RIPng_IPv6 network performs better than RIP_IPv4. RIPng_IPv6 has an ethernet delay of 2.9 milliseconds, traffic dropped of 0.29 packets/second, and network convergence of 17 seconds less than RIP_IPv4 values. However, the RIP_IPv4 network is scalable, uses less hop, and has 40 milliseconds of traffic delay, while RIPng_IPv6 has 0.40 seconds of traffic delay. RIP_IPv4 also has a better response time for all three applications, FTP as 100 milliseconds, DB as 40 milliseconds, and e-mail as 20 milliseconds which is much less than the values obtained for RIPng_IPv6 network. Therefore, according to the performance requirements, the network engineers/operators or researchers can use either the existing IPv4 network or a new IPv6 network to achieve the Quality of Service (QoS) target level.

NETWORK MODEL ANALYSIS IN OPNET SIMULATION

Electronic transfer of data and or information in a particular area requires techniques of telecommunication which is the process of communication between two or among multiple communication systems. The routing of data or information of concern would be dependent of the acceptable communication link of either wired or wireless means, and this must be connected to the already configured server. As there is a need to know which of either local area network (LAN) or wireless local area network (WLAN) would attract demand of the consumer in terms of the flexibility, speed and rate of traffic received; the work in this paper therefore looked keenly to the modeling analysis of both local area network (LAN) and wireless local area network (WLAN) using simulation approach to verify and establish the state of art in the available gap. Parameters of consideration include: Ethernet delay in (sec), Traffic sent (packets/sec) and Traffic received (packets/sec). File transfer protocol (FTP) was used as a traffic application and it was configured for a comprehensive study using Optimized Network Engineering Tools (OPNET) simulator. These parameters were compared in both scenarios, and it was observed that the local area network remained the fastest means of communication over the wireless local area network, as there was no delay in the formal compare to some seconds delay in the later, as the same traffic application was sent in both scenarios. Furthermore, more traffics were considerably received in the case of the LAN over simulated time. According to the simulated results, it has therefore been established that if mobility is not of priority, the local area network is the best. Although, the generated results are OPNET based and there could be little or no different when other network simulators are considered

Performance Comparison of EIGRP, OSPF and RIP Routing Protocols using Cisco Packet Tracer and OPNET Simulator

In this paper, the intention has to create a network configuration that is similar for all routing protocols RIP, OSPF, and EIGRP by which we want to analysis the performance of these protocols using Cisco Packet Tracer and OPNET simulator. We use various protocols for forwarding the packets in a network topology. For successful delivery of the packets from the source node to the accurate destination node, the routers maintain a routing table. The amount of network information stored by a router depends on its algorithm. For the performance measure, we will simulate real-time scenarios of the networks using Cisco Packet Tracer and OPNET simulation tools. We will evaluate the performance of EIGRP, OSPF, and RIP based on of network convergence, Ethernet delay, security, and bandwidth requirement, etc. We will observe that the EIGRP routing protocol has the maximum link utilization followed by OSPF, and RIP routing protocols.

A Prototype and Roadmap for Transition to IPv6 with Performance Evaluation

The migration from IPv4 to IPv6 can not be achieved in a brief period, thus both protocols co-exist at certain years. IETF Next Generation Transition Working Group (NGtrans) developed IPv4/IPv6 transition mechanisms. Since Iraq infrastructure, including universities, companies and institutions still use IPv4 protocol only. This research article tries to highlight, discuss a required transition roadmap and extend the local knowledge and practice on IPv6. Also, it introduces a prototype model using Packet tracer (network simulator) deployed for the design and implementation of IPv6 migration. Finally, it compares and evaluates the performance of IPv6, IPv4 and dual stack using OPNET based on QoS metrics such as throughput, delay and point to point utilizationas the key performance metrics for network with address allocation and router configuration supported by Open Shortest Path First (OSPF) routing protocol. In addition it compares dual-stack to the tunneling mechanism of IPv6 transition using OPNET. The results have shown that IPv6 network produces a higher in throughput, Response time and ethernet delay, but little difference in packet dropped, additionaly the result in TCP delay, Point to point utilization shows small values compared to dul-stack networks, The worst performance is noted when 6 to 4 tunneling is used, tunneling network produces a higher delay than other scenarios.

Performance Study of Star Topology in Small Internetworks

This paper studies the performance of star topology in a Small Internetworks. In this network model, general LANs models are used and a simulated environment is formed where many applications are in used at a time and their mutual effects thereof. I was performed simulations using OPNET IT GURU Academic Edition simulator. Several simulation graphs were obtained and used to analyze the network performance. The results being obtained represent the optimum possible improvements in terms of number of node, Ethernet delay (second), load (bits/sec). The result was found that when the number of nods and simulation time were varied the server loads also was changed but the delay was almost same. The only limitation of this program is that we can not save translated text i.e it can only work with predetermined application. It can apply as a University network which covers most of its departments and colleges, many industries and garments, etc. A detailed simulation study helped to find out the best solution of research questions.

Comparisons process-to-bay level peer-to-peer network delay in IEC 61850 substation communication systems

This paper presents the application of IEC 61850 protocol in electrical power engineering industry for data communication systems between substations. This IEC 61850 protocol presents new challenges for real-time communication performance between Intelligent Electronic Devices (IEDs) within substation because of the Generic Object Oriented Substation Event (GOOSE) messages. The analyses of substation Ethernet and WLAN (wireless LAN) communication delay, its impact factors, various methods and different network topologies which can improve the real-time performance are discussed. For basic analysis of data flow within a substation, the Optimized Network Engineering Tool (OPNET) software is used. The process-to-bay level network simulation model is performed by using the OPNET software. The Ethernet delay and WLAN peer-to-peer performance of the process-to-bay level network simulation results are analyzed which is based on AP (access point), switched, shared Ethernet network or peer-to-peer network.

QoS Improvement for the Next Generation Heterogeneous Network

Next Generation Wireless Networks (NGWNs) focus on convergence of different Radio Access Technologies (RATs) providing good Quality of Service (QoS) for applications such as Voice over IP (VoIP) and video streaming. A heterogeneous network is to enable the users to obtain and share necessary and timely information in the right form over integrated heterogeneous network which is scalable and evolvable. Load balancing which is a significant method to achieve the resource sharing and IPQoS algorithm in the heterogeneous network is used to improve the overall performance of the network by configuring of queuing methods. Existing interworking networks couldn’t support the bandwidth demands of many multimedia applications which exceed the capacity of the interworking network. To meet the challenges, LTE is a step toward the 4th generation of radio technologies designed to increase the capacity and speed of mobile telephone networks. The LTE promises to be one of the wireless access technologies capable of supporting very high bandwidth applications. In this paper a hybrid coupled interworking of three networks (WiMAX – WLAN –LTE – IPQoS –LB) using H.323 signaling protocol is proposed. Heterogeneous network model based on Fast handover Hierarchical Mobile IPV6 (FHMIPV6) protocol that integrates the WiMAX, LTE and WLAN technologies is proposed to improve QoS. The QoS parameter in terms multimedia application such as traffic sent and received, RTP, response time, jitter, packet end -to-end delay , TCP delay, Ethernet delay, packet delay variation, of proposed work were simulated and its performance are measured.

Comparison of RIP, EIGRP, OSPF, IGRP Routing Protocols in Wireless Local Area Network (WLAN) by using OPNET Simulator tool - A Practical Approach

In Adhoc Network group communication is more important, in which routing protocols play a vital role for data transmission. With/Without using central server or access point, the Wireless network form a temporary network with collection of wireless nodes in which, each node changes randomly at different times. In order to establish data transmission between nodes, multiple hops are needed because of limited range i.e. transmission rate. In this paper, we have analyzed and simulated a proposed Wireless Local Area Network (WLAN) using different routing protocols. The performances of different protocols are compared and analyzed using Optimum Network Performance (OPNET) simulator tool in which metrics like delay, throughput, packet delivery, load, Ethernet delay, are measured.