scholarly journals Checking the Accuracy of Siitperf

2021 ◽  
Vol 13 (2) ◽  
pp. 2-9
Author(s):  
Gábor Lencse
Keyword(s):  
Flow Control ◽  
Network Performance ◽  
Loss Rate ◽  
Packet Delay ◽  
Free Software ◽  
Linux Kernel ◽  
Measurement Results ◽  
Commercial Network ◽  
Delay Variation

Siitperf is the world’s first free software RFC 8219 compliant SIIT (Stateless IP/ICMP Translation, also called as Stateless NAT64) tester, which implements throughput, frame loss rate, latency and packet delay variation tests. In this paper, we show that the reliability of its results mainly depends on the accuracy of the timing of its frame sender algorithm. We also investigate the effect of Ethernet flow control on the measurement results. Siitperf is calibrated by the comparison of its results with that of a commercial network performance tester, when both of them are used for determining the throughput of the IPv4 routing of the Linux kernel.

scholarly journals A Case Study of IPv6 Network Performance: Packet Delay, Loss, and Reordering

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Fuliang Li ◽  
Xingwei Wang ◽  
Tian Pan ◽  
Jiahai Yang
Keyword(s):  
Network Performance ◽  
Loss Rate ◽  
Performance Metrics ◽  
Deep Understanding ◽  
Packet Delay ◽  
Packet Reordering ◽  
Link Utilization ◽  
Ipv6 Network ◽  
Ipv6 Networks

Internet Protocol (IP) is used to identify and locate computers on the Internet. Currently, IPv4 still routes most Internet traffic. However, with the exhausting of IPv4 addresses, the transition to IPv6 is imminent, because, as the successor of IPv4, IPv6 can provide a larger available address space. Existing studies have addressed the notion that IPv6-centric next generation networks are widely deployed and applied. In order to gain a deep understanding of IPv6, this paper revisits several critical IPv6 performance metrics. Our extensive measurement shows that packet delay and loss rate of IPv6 are similar to IPv4 when the AS-level paths are roughly the same. Specifically, when the link utilization exceeds a threshold, for example, 0.83 in our study, variation of packet delay presents a similar pattern with the variation of link utilization. If packet delay of a path is large, packet-loss rate of that path is more likely to fluctuate. In addition, we conduct a first-ever analysis of packet reordering in IPv6 world. Few IPv6 probe packets are out-of-order and the reordering rate is 2.3⁎10-6, which is much lower than that of 0.79% in IPv4 world. Our analysis consolidates an experimental basis for operators and researchers of IPv6 networks.

scholarly journals Defining Quantiles for Estimating IP Packet Delay Variation in NGN Core Networks

2011 ◽  
Vol 1 (03) ◽  
Author(s):  
Dao Ngoc Lam ◽  
Le Nhat Thang ◽  
Le Huu Lap
Keyword(s):  
Network Performance ◽  
Estimation Method ◽  
Packet Delay ◽  
Distribution Functions ◽  
Estimation Accuracy ◽  
Core Network ◽  
Approximate Methods ◽  
Core Networks ◽  
Ip Packet ◽  
Delay Variation

Traffic delay is one of the important metrics used for evaluating network performance. Delay and delay variation characteristics of IP packets transferred over multi-section networks can be derived, estimated or composed from component distributions of IP package delay in each network section. Approximate methods are needed in the cases of unknown or complicated delay distribution functions, which are unavailable or unusable in practice. The ITU-T has proposed a method for estimating IP packet delay variation. One of noticeable factors affecting the estimation accuracy is the packet delay population quantile which has not been adequately considered. The objective of this paper is to examine the optimal range of quantiles used for estimating the IP packet delay variation in the NGN (Next Generation Network) core networks. The paper is composed from the following ideas. Firstly, several concepts and mathematical formulas related to delay metrics based on probability and statistics theory are defined. The approximate method of ITU-T for estimating the IP packet delay variation in a multi-section network is revised. Then, another method based on convolution for composing the empirical IPTD distribution functions is proposed for the same target as the first one. Secondly, a number of test cases are implemented to measure the IP packet delay on several sections of an NGN core network. Sample data are used for computing and estimating the IP packet delay variation for multi-section networks by two methods with certain hypotheses. Finally, these methods are compared and evaluated both theoretically and empirically in regards to the estimation accuracy versus quantiles of the IP packet transfer delay. The best range of quantiles is determined to ensure the accuracy of the estimation method applied for the NGN core network.

Investigating the Analysis of Power Saving Mode in IEEE 802.11 for Wi-Fi Communication

2018 ◽  
Vol 6 (3) ◽  
pp. 13-19
Author(s):  
Isam Aameer Ibrahim ◽  
Haider TH Salim ◽  
Hasan F. Khazaal
Keyword(s):  
Ieee 802.11 ◽  
Network Performance ◽  
Power Saving ◽  
Packet Delay ◽  
Access Point ◽  
Battery Life ◽  
Global Issues ◽  
Time Ratio ◽  
Power Saving Mode ◽  
Saving Mode

One of the major global issues today is energy consumption. Consequently, power management was introduced in various communication technologies. For IEEE 802.11wireless communication, there is a Power Saving Mode scheme (PSM) for increase the battery life of cell phone. In this PSM, there are two key parameters: beacon period interval (BI) and listen interval(LI). In most work these values are chosen arbitrary. Here, a scheme to determine the optimal BI and LI for accomplishing the most astounding conceivable vitality proficiency is introduced. This is implemented with the application of a numerical sample to the standard IEEE 802.11 PSM and Access Point-PSM (AP-PSM) schemes. To ensure the quality of network performance analysis on the normal and change of parcel delays is doing. The well-known queuing (M/G/I) model with bulk services are utilized. After the implementation of the proposed analysis, “maximum rest plan time ratio optimal Sleep Scheme (OSS)” which is when participate stations stay in the doze mode it can be determined. In this research shows that the optimal BI and LI produce optimal OSS time ratio scheme also achieved optimal average and variance of packet delay.

scholarly journals FOSquare: A Novel Optical HPC Interconnect Network Architecture Based on Fast Optical Switches with Distributed Optical Flow Control

Photonics ◽  
2021 ◽  
Vol 8 (1) ◽  
pp. 11
Author(s):  
Fulong Yan ◽  
Changshun Yuan ◽  
Chao Li ◽  
Xiong Deng
Keyword(s):  
Flow Control ◽  
Network Architecture ◽  
Network Performance ◽  
Optical Switches ◽  
Low Power Consumption ◽  
Low Latency ◽  
High Bandwidth ◽  
Fast Flow ◽  
Real Traffic ◽  
Interconnect Network

Interconnecting networks adopting Fast Optical Switches (FOS) can achieve high bandwidth, low latency, and low power consumption. We propose and demonstrate a novel interconnecting topology based on FOS (FOSquare) with distributed fast flow control which is suitable for HPC infrastructures. We also present an Optimized Mapping (OPM) algorithm that maps the most communication-related processes inside a rack. We numerically investigate and compare the network performance of FOSquare with Leaf-Spine under real traffic traces collected by running multiple applications (CG, MG, MILC, and MINI_MD) in an HPC infrastructure. The numerical results show that the FOSquare can reduce >10% latency with respect to Leaf-Spine under the scenario of 16 available cores.

Packet Delay Variation Correction for Time Sensitive Networking with Frame Preemption

2020 ◽  
Author(s):  
Silviu Adrian Sasu ◽  
Achim Autenrieth ◽  
Jim Zou ◽  
Jorg-Peter Elbers
Keyword(s):  
Packet Delay ◽  
Delay Variation

scholarly journals The effects of Packet Delay Variation on the perceptual quality of video

2010 ◽  
Author(s):  
Selim Ickin ◽  
Karel De Vogeleer ◽  
Markus Fiedler ◽  
David Erman
Keyword(s):  
Packet Delay ◽  
Perceptual Quality ◽  
Delay Variation

Network Performance Comparison between Linear and Hybrid Topology Structure of WSN in Coal Mining Equipment

2012 ◽  
Vol 548 ◽  
pp. 775-779
Author(s):  
Hong Liang Gao ◽  
Bing Wen Wang ◽  
Chao Gao ◽  
Xiao Ya Hu
Keyword(s):  
Coal Mine ◽  
Packet Loss ◽  
Network Performance ◽  
Loss Rate ◽  
Packet Loss Rate ◽  
Mine Safety ◽  
Mining Equipment ◽  
Linear Topology ◽  
Hybrid Topology ◽  
Average Transmission

This paper analyzes the characteristics of current monitoring wireless sensor networks for coal mine safety and two kinds of typical system network architecture of mining working face in coal mine firstly, and then analyzes the network performance of the two kinds of network system theoretically. In order to compare the performance of WSN adopting linear topology and hybrid topology, we build the simulation model using NS2 to evaluate the performance through three indexes, i.e. total energy consumption, packet loss rate and average transmission latency. The research results show that the network adopting hybrid topology has better energy efficiency, and the network adopting linear topology has better performance in packet loss rate and average transmission latency.

Internet Protocol Packet Delay Variation measurements in communication networks: How to evaluate measurement uncertainty?

Measurement ◽  
2013 ◽  
Vol 46 (7) ◽  
pp. 2099-2109 ◽  
Author(s):  
Leopoldo Angrisani ◽  
Domenico Capriglione ◽  
Luigi Ferrigno ◽  
Gianfranco Miele
Keyword(s):  
Measurement Uncertainty ◽  
Communication Networks ◽  
Internet Protocol ◽  
Packet Delay ◽  
Delay Variation
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