Rapid development of wireless network impacts the development of IEEE 802.11x standard technology. However, the existing standard technologies still can not solve the problem of capacity, coverage, and power consumption. Due to these limitations, IEEE 802.11ah standard was made. IEEE 802.11ah is a standard of Wi-Fi technology that supports wireless networking scenarios, such as ability to arrange the large number of devices, a wide range of coverage, and power consumption mechanism on a limited energy condition. Wireless network is a best-effort network in delivering package. But VoIP service on the wireless network has lower QoS value, compared to the network using cables. This paper addresses the performance analysis of 802.11ah standard against VoIP services, especially at the MAC layer. To analyze the influence of node density and performance of RAW mechanism on VoIP service, a simulation is conducted through two scenarios, which are changing the number of nodes and RAW station. The simulation is performed using network simulator NS3 version 3.23. Analysis results show with the increasing number of nodes, the value of throughput and delay increase by 60.09% and 93.43%. Then, with the increasing number of RAW station, throughput and delay value have increased by 81.54% and 43.45%. The increase stops in a constant value when the number of RAW station has exceeded the number of nodes in the network. Intisari-Pesatnya perkembangan jaringan nirkabel dalam memenuhi kebutuhan komunikasi data berdampak pada pengembangan teknologi standar IEEE 802.11x. Namun, dari teknologi standar yang ada masih terdapat kekurangan dalam mengatasi masalah kapasitas, cakupan, dan konsumsi daya. Karena keterbatasan tersebut, dibuatlah standar IEEE 802.11ah. IEEE 802.11ah merupakan standar teknologi Wi-Fi yang mendukung skenario jaringan nirkabel, seperti mengatur banyaknya perangkat, jangkauan wilayah yang luas, dan mekanisme konsumsi daya pada energi yang terbatas. Jaringan nirkabel merupakan jaringan yang best-effort dalam pengiriman paketnya. Akan tetapi, layanan VoIP pada jaringan nirkabel memiliki nilai QoS yang rendah jika dibandingkan dengan jaringan yang menggunakan kabel. Makalah ini membahas analisis unjuk kerja standar 802.11ah terhadap layanan VoIP, khususnya pada MAC layer. Untuk melihat pengaruh kepadatan node dan kinerja mekanisme RAW pada layanan VoIP, simulasi dilakukan melalui dua skenario, yaitu perubahan kondisi jumlah node dan RAW station. Simulasi dilakukan dengan menggunakan simulator jaringan NS3 versi 3.23. Berdasarkan hasil analisis, disimpulkan bahwa dengan semakin meningkatnya jumlah node, nilai throughput dan delay yang diperoleh mengalami peningkatan masing-masing sebesar 60,09% dan 93,43%. Kemudian seiring meningkatnya jumlah RAW station, nilai throughput dan delay mengalami peningkatan masing-masing sebesar 81,54% dan 43,45% hingga bernilai konstan pada saat jumlah RAW station telah melebihi jumlah node di dalam jaringan tersebut. Kata Kunci-IEEE 802.11ah, Restricted Access Window, Network Simulator 3, ...
Abstrak-Vehicular Ad-Hoc Network (VANET) merupakan pengembangan dari Mobile Ad-Hoc Network (MANET) yang menjadikan kendaraan sebagai node nya. Teknologi VANET diharapkan dapat meningkatkan keamanan pengemudi saat berkendara di jalan raya antara lain dengan adanya map location, informasi lalu lintas, peringatan jika akan terjadi tabrakan, dan akses internet pada kendaraan. Namun, VANET memiliki karakteristik jaringan yang cepat berubah karena pergerakan node yang cepat sehingga perlu dipilih protokol routing yang dinilai cocok dan efisien sehingga pengiriman data dapat berlangsug secara maksimal. Pada penelitian ini akan disimulasikan serta dianalisis perbandingan kinerja Optimized Link State Routing Protocol (OLSR) dan Ad Hoc On demand Multipath Distance Vector (AOMDV) menggunakan kondisi urban (perkotaan). Di lingkungan tersebut akan diuji perubahan kecepatan node dan pengaruh jumlah node. Simulasi ini dilakukan dengan menggunakan NS-2.34 dilengkapi dengan SUMO 0.12.3. sebagai mobility generator dan MOVE sebagai script generator Performansi diukur menggunakan parameter perbandingan berupa Average throughput, Packet Delivery Ratio, Average End-to-end delay, Normalized Routing Load, dan Routing Overhead. Hasil analisis di lingkungan VANET, protokol routing AOMDV lebih unggul dibandingkan protokol routing OLSR. Karena hampir pada semua parameter yang diujikan pada skenario perubahan jumlah node maupun kecepatan node AOMDV memiliki performansi yang lebih baik sehingga AOMDV lebih efisien digunakan pada kondisi lingkungan perkotaan. Kata Kunci : VANET, NS-2, OLSR, AOMDV, SUMO,MOVEAbstract-Vehicular Ad-Hoc Network (VANET) is a development of the Mobile Ad-Hoc Network (MANET), which makes the vehicle as its nodes. VANET technology is expected to improve the security of drivers while driving on a highway between the others, with the map location, traffic information, warning if there will be a collision, and internet access in the vehicle. However, VANET has the characteristics of a network rapidly changing due to the rapid movement of nodes that need to have a routing protocol that is considered suitable and efficient so that data transmission can be optimally lasts. This research will be simulated and analyzed the comparative performance of Optimized Link State Routing Protocol (OLSR) and Ad Hoc On-demand Multipath Distance Vector (AOMDV) using urban conditions (urban). The environment will be tested in speed changes and the effect of the number of nodes nodes. This simulation was done using NS-equipped with SUMO 0.12.3 2:34. as mobility MOVE as a script generator and generator Performance was measured using parameters such as Average throughput comparison, Packet Delivery Ratio, Average End-to-end delay, Normalized Routing Load, and Routing Overhead. Results of analysis in environmental VANET, routing protocols AOMDV superior routing protocol than OLSR. Because almost all parameters tested in scenarios of changes in the number of nodes and node speed AOMDV have better performance so AOMDV more efficient use on urban...
The emergence of the container in various cloud platforms from Open Stack to Google Cloud Platform has marked the industry interest in opting for container as their cloud service solution. However, the cloud users should aware of performance overheads of different virtualization solutions in order to avoid quality of service degradation because different container platforms delivered different performances. This research evaluated how different container platforms (Docker, LXC, and LXD) impacted in running different TCP services and also measured system performance of each container compared to the native system without any container solution based on overall performance metrics. This research focuses on the three most used PaaS: FTP Server, Web Server, and Mail Server. Related to previous works, our evaluation results show that performance could vary between containers. In terms of system performance, LXD shows better performance while server performance result varies depending on what service is being evaluated.
Equal Cost Multipath Routing (ECMP) is a routing application where all available paths between two nodes is utilized by statically mapping each path to possible traffics between source and destination hosts in a network. This configuration can lead to congestion if there are two or more traffics being transmitted into paths with overlapping links, despite the availability of less busy paths. Software Defined Networking (SDN) has the ability to increase the dynamicity of ECMP by allowing controller to monitor available bandwidths of all links in the network in real-time. The measured bandwidth is then implemented as the basis of the calculation to determine which path a traffic will take. In this research, a SDN-based ECMP application that can prevent network congestion is made by measuring available bandwidth of each available paths beforehand, thus making different traffics transmitted on non-overlapped paths as much as possible. The proposed scheme increased the throughput by 14.21% and decreased the delay by 99% in comparison to standard ECMP when congestion occurs and has 75.2% lower load standard deviation in comparison to round robin load balancer.
Abstrak -Pada jaringan konvensional, konfigurasi protocol routing sangat tidak fleksibel, tidak efisien dan konfigurasi dilakukan pada tiap perangkat. Hal ini tentu saja tidak dapat memenuhi tuntutan operasional saat ini yang rata-rata memiliki jaringan yang besar dan perangkat jaringan yang memiliki spesifikasi berbeda. Software Defined Network (SDN) muncul sebagai harapan untuk permasalahan kompleksitas jaringan konvensional. Paradigma baru SDN melakukan pemisahan antara control plane dan forwarding plane. RouteFlow merupakan salah satu komponen berbasis software yang dapat mengaplikasikan protocol routing konvensional pada jaringan SDN. Open Shortest Path First (OSPF) merupakan sebuah protokol routing konvensional yang memiliki kemampuan untuk mendeteksi perubahan topologi jaringan dengan cepat dalam sebuah jaringan yang besar. Protokol routing OSPF diterapkan pada teknologi SDN menggunakan RouteFlow dengan tujuan untuk mempermudah dalam mengontrol jaringan dengan sistem terpusat. Time convergence dan parameter Quality of Service (Throughput, Delay, Jitter dan Packet Loss) diukur dengan skenario pemutusan link, penambahan jumlah switch dan background traffic. Hasil pengukuran time convergence menunjukan bahwa penambahan jumlah switch mempengaruhi pertambahan waktu konvergensi, sedangkan untuk parameter Quality of Service (QoS) pada peningkatan topologi switch didapatkan hasil yang masih sesuai dengan standar ITU-T G.1010 namun apabila ditambahkan background traffic yang memenuhi 50% bandwidth jaringan maka QoS memburuk.Kata kunci -Software Defined Network, OSPF, RouteFlow, Mininet, QoS Abstract -In a conventional network, routing protocol configuration is very inflexible, inefficient and configuration is performed on each device. This of course cannot meet today operational demands which on average have a large network and network devices of different specifications. Software Defined Network emerged as the hope for the conventional network complexity issues. The new paradigm SDN separation between the control plane and forwarding plane. RouteFlow is one component-based software that can apply a conventional routing protocol on the network Software Defined Network. Open Shortest Path First (OSPF) is a conventional routing protocol that has the ability to detect changes in the network topology quickly in a large network. OSPF routing protocol is applied on Software Defined Network technology uses RouteFlow with the aim to simplify the control network with a centralized system. Time Convergence and the parameters of Quality of Service (Throughput, Delay, Jitter and Packet Loss) are measured with link termination scenarios, increasing the number of switches and background traffic. Time convergence measurement results showed that the increase in the number of switches affect time overconvergence, while the parameters of Quality of Service (QoS) on the increment of switch topology complexity, the results obtained is in accordance with ITU-T G.1010 standard, but when added to background traffic for 50 % bandwidth Qo...
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