scholarly journals Availability Improvement of Layer 2 Seamless Networks Using OpenFlow

2015 ◽  
Vol 2015 ◽  
pp. 1-14 ◽  
Author(s):  
Elias Molina ◽  
Eduardo Jacob ◽  
Jon Matias ◽  
Naiara Moreira ◽  
Armando Astarloa
Keyword(s):  
Packet Loss ◽  
Software Defined Networking ◽  
Network Robustness ◽  
Redundancy Management ◽  
Optimal Technique ◽  
Data Flows ◽  
Layer 2 ◽  
Active Path ◽  
Traditional Technologies ◽  
Network Emulator

The network robustness and reliability are strongly influenced by the implementation of redundancy and its ability of reacting to changes. In situations where packet loss or maximum latency requirements are critical, replication of resources and information may become the optimal technique. To this end, the IEC 62439-3 Parallel Redundancy Protocol (PRP) provides seamless recovery in layer 2 networks by delegating the redundancy management to the end-nodes. In this paper, we present a combination of the Software-Defined Networking (SDN) approach and PRP topologies to establish a higher level of redundancy and thereby, through several active paths provisioned via the OpenFlow protocol, the global reliability is increased, as well as data flows are managed efficiently. Hence, the experiments with multiple failure scenarios, which have been run over the Mininet network emulator, show the improvement in the availability and responsiveness over other traditional technologies based on a single active path.

scholarly journals The Software Defined Networking in KM3NeT

2019 ◽  
Vol 207 ◽  
pp. 06009
Author(s):  
Tommaso Chiarusi ◽  
Emidio Giorgio
Keyword(s):  
Software Defined Networking ◽  
Innovative Technology ◽  
Astroparticle Physics ◽  
Data Flows ◽  
Deterministic Control ◽  
Physics Experiments

The networking infrastructure of the KM3NeT detector, implemented with both White Rabbit and standard high preformance switches, is presented in its peculiar asymmetric and hybrid layout. It is one of the first usecases for Software Defined Networking in Astroparticle Physics experiments. Thanks to this innovative technology, dangerous network loops are prevented and a complete deterministic control of the handled data flows is obtained.

scholarly journals PARD: Hybrid Proactive and Reactive Method Eliminating Flow Setup Latency in SDN

2020 ◽  
Vol 28 (4) ◽  
pp. 1547-1574
Author(s):  
Michal Rzepka ◽  
Piotr Borylo ◽  
Artur Lason ◽  
Andrzej Szymanski
Keyword(s):  
Packet Loss ◽  
Traffic Engineering ◽  
Hardware Design ◽  
Software Defined Networking ◽  
Fine Grained ◽  
Flow Table ◽  
Scientific Papers ◽  
Reactive Method ◽  
Full Maturity

Abstract Advantages of Software Defined Networking are unquestionable and are widely described in numerous scientific papers, business white papers and press articles. However, to achieve full maturity, crucial impediments to this concept and its shortcomings must be overcame. One of the most important issues regards significant setup latency of a new flow. To address this issue we propose PARD: a hybrid proactive and reactive method to manage flow table entries. Additional advantages of the proposed solution are, among the others, its ability to preserve all capabilities of Software Defined Networking, utilization of multiple flow tables, a possibility to employ fine-grained traffic engineering and, finally, compatibility with existing protocol and hardware design. It is shown that the proposed solution is able to significantly reduce latency of first packets of a new flow, which directly impacts packet loss and perceived throughput. Thus, our solution is expected to enable a wide deployment of Software Defined Networking concept without any need for protocol changes or, what is extremely important, hardware modifications.

scholarly journals Virtualising redundancy of power equipment controllers using software-defined networking

2019 ◽  
Vol 2 (S1) ◽  
Author(s):  
Ferdinand von Tüllenburg ◽  
Peter Dorfinger ◽  
Armin Veichtlbauer ◽  
Ulrich Pache ◽  
Oliver Langthaler ◽  
...  
Keyword(s):  
Power Systems ◽  
Power System ◽  
Software Defined Networking ◽  
System Control ◽  
Field Equipment ◽  
Control Applications ◽  
Power System Control ◽  
Redundancy Management ◽  
Control Application ◽  
Redundancy Design

Abstract Power system automation is heavily dependent on the reliable interconnection of power system field equipment and centralised control applications. Particularly important to achieve reliability in automated power systems is the redundant connection of field equipment controllers. Today, the fundamental redundancy management and switch-over processes are handled by the power system control applications itself. This, however, increases the complexity of the control systems and leads to an intersection of concerns. Consequently, the design and the implementation of field equipment controller redundancy is time-consuming and cost-intensive. In this paper, we propose the implementation of a redundancy virtualisation layer for power system controllers based on software-defined networking (SDN). The goal is to relieve the control applications from managing field level redundancy. Thus, our SDN approach allows to detect gateway failures and to perform transparent switch-overs. This significantly simplifies the configuration of the control application with redundant components and finally leads to more flexible and simplified redundancy design, deployment and operation. Arbitrary redundancy topologies, such as triple-controller-redundancy can be implemented without modifying the control applications.

scholarly journals Software-defined inter-domain switching

2021 ◽  
Author(s):  
Ashvanth Kumar Selvakumaran
Keyword(s):  
Load Balancing ◽  
Shortest Path ◽  
Spanning Tree ◽  
Domain Switching ◽  
Software Defined Networking ◽  
Data Centre ◽  
Path Information ◽  
Central Controller ◽  
Layer 2 ◽  
Domain Level

Software Defined Networking (SDN) technology has garnered much attention in the field of networking. Even though there have been several SDN based data centre (domain) implementations, there is a need to inter-connect multiple SDN domains. In this thesis we will focus on enabling inter-domain layer 2 switching. We propose an approach wherein a central controller is responsible for inter-domain switching while the domain controllers are responsible for intra-domain switching in their respective domains. To achieve this, the central controller initially communicates with the domain controllers to gather the overall topology of the network. From the overall topology, the central controller can derive the domain-level topology, compute the domain-level spanning tree and install the tree on the topology. In addition, the central controller also computes the inter-domain shortest path between any pair of domains. The shortest path information are then pushed to the domain controllers in order to setup the network-wide shortest path. We demonstrate the viability of the proposed approach by implementing it in OpenDayLight, a popular SDN platform. To further demonstrate the flexibility and openness of the approach, we have also successfully implemented a user case to achieve inter-domain load balancing.

scholarly journals Analisa Perbandingan Quality Of Service Antara Protokol PPTP dan L2TP Pada Virtual Private Network Berbasis Router Mikrotik

2019 ◽  
Vol 10 (2) ◽  
Author(s):  
Dahnial Dahnial
Keyword(s):  
Quality Of Service ◽  
Packet Loss ◽  
Virtual Private Network ◽  
The Internet ◽  
Public Network ◽  
Layer 2 ◽  
Point To Point ◽  
Private Network ◽  
Internet Network

<p align="center"><strong>ABSTRACT</strong></p><p><em>The internet as a data transmission backbone has security threats in sending data. To overcome the security problem of every data communication that is done through a public network (public network), then a connection is needed that requires a connection between workstations running privately, so that only workstations that have access can connect, by using a virtual private network or VPN. The advantage of a VPN is that data sent over an encrypted VPN is quite safe and the secret is maintained even through the internet network because the data sent will go through the tunnel. Tunneling itself is a method for transferring data from one network to another by using a veiled internet network. Two protocols can be chosen in a VPN, namely Point to Point Tunneling Protocol (PPTP) and Layer 2 Tunneling Protocol (L2TP). However, the performance of each of these protocols is unknown yet. To find out the performance of the two protocols we need a test with a simulation method. Using a Mikrotik router and Wireshark application with Quality of Service (QoS) parameters consisting of Packet Loss, Delay, and Throughput on 2 clients connected to the mikrotik router and each client uses a different protocol. All clients will stream videos simultaneously to get a data packet capture. The test results will be grouped into four categories, namely bad, moderate, good and very good. It is expected that data will be able to show the quality of service of both protocols. so that it can be used as a reference in the selection of VPN protocol to be used.</em></p><p><strong><em>Keywords: </em></strong><em>Quality of Service, PPTP, L2TP</em></p><p align="center"><strong>ABSTRAK</strong></p><p><em>Internet sebagai backbone pengiriman data memiliki ancaman keamanan dalam pengiriman data. Untuk mengatasi masalah keamanan setiap komunikasi data yang dilakukan melalui jaringan publik (public network) maka diperlukan suatu mekanisme yang memungkinkan koneksi antar workstation berjalan secara private, sehingga hanya workstation yang memiliki akses yang dapat saling terhubung, dengan cara memanfaatkan virtual private network atau VPN.</em> <em>Keuntungan VPN adalah data yang dikirimkan melalui VPN terenkripsi sehingga cukup aman dan rahasianya tetap terjaga meskipun melalui jaringan internet, karena data yang dikirim akan melalui tunnel.</em> <em>Tunneling sendiri merupakan metode untuk transfer data dari suatu jaringan ke jaringan lain dengan memanfaatkan jaringan internet secara terselubung. Terdapat dua protokol yang dapat dipilih dalam VPN yaitu Point to Point Tunneling Protocol (PPTP) dan Layer 2 Tunneling Protocol (L2TP). Akan tetapi belum diketahui performa dari masing – masing protokol tersebut. Untuk mengetahui kinerja dari kedua protokol tersebut diperlukan sebuah pengujian dengan metode simulasi. Menggunakan router mikrotik dan aplikasi Wireshark dengan parameter Quality of Service (QoS) yang terdiri dari Packet Loss, Delay, dan Throughtput pada 2 client yang terhubung ke router mikrotik dan setiap client akan menggunakan protokol yang berbeda. Semua client akan melakukan video streaming secara bersamaan untuk mendapatkan capture paket data. Hasil pengujian akan dikelompokkan menjadi empat kategori, yaitu kategori buruk, sedang, bagus dan sangat bagus. Diharapkan akan dihasilkan sebuah data yang dapat menunjukkan kualitas dari layanan kedua protokol tersebut. sehingga dapat dijadikan acuan dalam pemilihan protokol vpn yang akan digunakan.</em></p><strong><em>Kata kunci:</em></strong><em> Quality of Service, PPTP, L2TP</em>

scholarly journals Achieving Enhanced Network Performance in UDP and TCP Traffic of Software Defined Networking by Selecting Java Based Controllers Decisively

2020 ◽  
Vol 9 (7) ◽  
pp. 268-274
Keyword(s):  
Decision Making ◽  
Packet Loss ◽  
Network Performance ◽  
Software Defined Networking ◽  
Control Panel ◽  
Transmission Protocol ◽  
Control Plane ◽  
Stream Data ◽  
Distributed Controllers ◽  
Two Parameters

Separating out control plane from the forwarding plane is the core idea of Software Defined Networking (SDN). Control plane has the complete decision making logic and the forwarding plane is restricted to just follow the instructions given by control panel i.e. it is concerned with just forwarding the data. This part of decision making in the control plane is looked after by the Controller, so it is the most important component of the SDN. Depending upon the main objective of the created network a wise selection of the controller is important so that it can provide maximum performance for the said objective. Depending upon the need, if a right controller is selected it will give more enhanced performance as compared to a randomly selected controlled which is not made for the said objective. In this paper four Java based controllers namely Beacon, OpenDaylight, Floodlight and ONOS have been taken and their suitability has been checked for the performance measuring parameters namely throughput, jitter, packet loss and latency in TCP and UDP traffic of the network. Out of these four controllers, two controllers namely ONOS and OpenDaylight are distributed controllers whereas Beacon and Floodlight are centralized controllers. All the controllers have been run in centralized manner one at a time and the performance measuring parameters have been evaluated for TCP and UDP traffic. Logic behind running distributed controllers in centralized manner is to compare their performance with pure centralized controllers if they are run in centralized manner. TCP is a connection oriented protocol and due to its property of error checking, packet retransmission, congestion control mechanism etc measurement of throughput in TCP traffic is more important than measuring it for UDP traffic so throughput has been checked in TCP traffic. UDP is connection less data transmission protocol which is basically used with the applications which send data sporadically or send stream data where small amount of data loss can be accepted. So, two parameters concerned with UPD traffic namely jitter and packet loss have been evaluated with UDP traffic of the network. It has been analysed that Floodlight is performing best for throughput in TCP traffic when the size of the network is increasing. In case of jitter and delay ODL is performing best in UDP traffic. In case of Packet Loss Beacon is best. Mininet has been used as emulator to create the tree networks of different depths. iperf has been used as TCP and UDP traffic generator.

scholarly journals Prototipe Layanan Video on Demand (VoD) Pada Jaringan OpenFlow

Teknika ◽  
2018 ◽  
Vol 7 (1) ◽  
pp. 21-27
Author(s):  
Eki Ahmad Zaki Hamidi ◽  
Nanang Ismail ◽  
Rizka Jalaludin
Keyword(s):  
Packet Loss ◽  
Software Defined Networking ◽  
Video On Demand ◽  
Mean Opinion Score ◽  
Control Plane ◽  
On Demand ◽  
Opinion Score ◽  
Data Plane

Sistem distribusi Video on Demand (VoD) saat ini umumnya masih menggunakan sistem transmisi konvensional. Perkembangan jaringan yang makin kompleks menuntut manajemen yang semakin handal. Software-Defined Networking (SDN) hadir untuk mengatasi kompleksitas sistem dengan memisahkan control plane dan data plane. Salah satu protokol SDN adalah OpenFlow. Makalah ini membahas tentang simulasi layanan VoD melalui jaringan OpenFlow. Realisasi OpenFlow menggunakan OpenvSwitch. Sistem disimulasikan dengan 1 PC server, 1 PC untuk switch dengan OpenvSwitch, dan 3 PC client. Hasil simulasi menunjukan QoS VoD melalui jaringan OpenFlow sudah memenuhi standar ITU-T G.1010 dengan delay sebesar 3,31 ms, jitter sebesar 0 ms, packet loss sebesar 0%, dan throughput sebesar 2,71 Mbit/s. Penilaian Mean Opinion Score (MOS) juga sudah memenuhi standar ITU-T P.800 dengan nilai 3417,06 dan termasuk kategori baik.

scholarly journals Software-defined inter-domain switching

2021 ◽  
Author(s):  
Ashvanth Kumar Selvakumaran
Keyword(s):  
Load Balancing ◽  
Shortest Path ◽  
Spanning Tree ◽  
Domain Switching ◽  
Software Defined Networking ◽  
Data Centre ◽  
Path Information ◽  
Central Controller ◽  
Layer 2 ◽  
Domain Level

Software Defined Networking (SDN) technology has garnered much attention in the field of networking. Even though there have been several SDN based data centre (domain) implementations, there is a need to inter-connect multiple SDN domains. In this thesis we will focus on enabling inter-domain layer 2 switching. We propose an approach wherein a central controller is responsible for inter-domain switching while the domain controllers are responsible for intra-domain switching in their respective domains. To achieve this, the central controller initially communicates with the domain controllers to gather the overall topology of the network. From the overall topology, the central controller can derive the domain-level topology, compute the domain-level spanning tree and install the tree on the topology. In addition, the central controller also computes the inter-domain shortest path between any pair of domains. The shortest path information are then pushed to the domain controllers in order to setup the network-wide shortest path. We demonstrate the viability of the proposed approach by implementing it in OpenDayLight, a popular SDN platform. To further demonstrate the flexibility and openness of the approach, we have also successfully implemented a user case to achieve inter-domain load balancing.

scholarly journals Analisis Jaringan VPN Menggunakan PPTP dan L2TP Berbasis Mikrotik pada Diskominfo Kabupaten Muko-muko

KOMTEKINFO ◽  
2021 ◽  
pp. 189-194
Author(s):  
Adji Putra Pamungkas ◽  
Muhammad Reza Putra ◽  
M. Hafizh
Keyword(s):  
Packet Loss ◽  
Layer 2 ◽  
Point To Point

Dalam proses pertukaran data antara kantor pusat dan kantor cabang diperlukan teknologi agar data yang dikirim menjadi aman. VPN adalah sebuah teknologi yang membuat jaringan private (pribadi) dengan menggunakan jaringan publik agar proses pertukaran data menjadi aman, seperti yang diterapkan pada Dinkominfo Kabupaten Muko-muko. Data yang dipertukarkan oleh Dinkominfo berupa data text untuk layanan FTP, HTTP, dan data absensi. Data – data tersebut merupakan data penting yang perlu diamankan. Tujuan penelitian ini yaitu untuk menganalisis kerja jaringan dengan menggunakan parameter uji latency (delay), packet loss, dan throughput pada jaringan VPN pada Dinas Komunikasi dan Informatika Kabupaten Muko-Muko dengan menggunakan metode PPTP (Point to Point Tunneling Protocol) dan L2TP (Layer 2 Tunneling Protocol) merupakan pilihan protokol VPN yang dapat digunakan untuk melakukan pertukaran data antar jaringan yang berbeda. Pada penelitian ini dilakukan pengujian antar kedua protokol tersebut dengan mengamati parameter throughput, delay, dan packet loss untuk mengetahui protokol manakah yang memiliki performansi terbaik. Dapat dijadikan alternative bagi kantor pemerintah sebagai peningkatan kualitas keamanan jaringan dengan menggunakan metode PPTP dan L2TP.  

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