An Experimental Analysis on Iterative Block Ciphers and Their Effects on VoIP under Different Coding Schemes

Size: px
Start display at page:

Download "An Experimental Analysis on Iterative Block Ciphers and Their Effects on VoIP under Different Coding Schemes"

Transcription

1 An Experimental Analysis on Iterative Block Ciphers and Their Effects on VoIP under Different Coding Schemes Gregory Epiphaniou 1 Carsten Maple 1 Paul Sant 1 Matthew Reeves 2 1 Institute for Research in Applicable Computing University of Bedfordshire, United Kingdom 2 Modern Networks Hitchin, United Kingdom 7 th International Joint Conference on E-business and Telecommunications, ICETE, 2010

2 Outline VoIP Quality of Service and Security 1 VoIP Quality of Service and Security

3 The Big Questions Around VoIP QoS and Security How variable speech encoding schemes can affect VoIP QoS when used in conjunction with security protocols? What is the accurate combination of encoding schemes, ciphers and payload sizes? How to address the tradeoffs between delay, loss, jitter buffers and packet sizes for a given VoIP service? Is the default voice payload size for each speech compressor (coder) the accurate setting when encryption is applied?

4 Addressing the problematic areas Security constraints may impose a serious degradation to VoIP quality Increased end-to-end (e2e) delay due to security processing Strong encryption cannot provide adequate QoS Tackle the encryption penalty without degrading the call quality Voice payload encryption, or packet encryption and encapsulation into a new packet

5 Addressing the problematic areas (cont.) Proper selection of the encryption algorithm Impossibility for the crypto-engine to favour voice traffic over normal one Disproportional ratio between the headers and the actual voice carried across the network QoS protocols cannot be well suited with all the security mechanisms Tradeoffs between the crypto-engine s throughput, e2e delay and VoIP packet size Increased bandwidth consumption due to security mechanisms

6 Simulation Testbed NS-2 simulator IPSec in transport mode 600 User Agents interconnected (VoIP endpoints) All codecs and payloads supported DES, 3DES, HMAC-SHA-1 Simulation Process Initial Configuration (parameters.dat) Change payload size and cipher Default payload/burst-idle times/rate/cipher PHASE 1 Python Script that generates Call NS2 Simulator network topology for NS-2 AWK scripting to interpret simulation output files Completely automated with Python scripting PHASE 2 Output call 1 Output call 2 Output call ms propagation delay 300 simultaneous VoIP calls PHASE 3 Results Visualisation with MATLAB Delay Traces Packet Loss Traces Intel Xeon Quad Core (2.4GHz) with 4GB RAM and a Linux Centos 5.4

7 Encrypted VoIP packet Overheads Table: VoIP Ethernet packet overheads for encrypted traffic with AES/DES/3DES and IPSec in two modes of operation Coder Packet Size (bytes) Rate (kbps) AES Trans. (bytes) AES Tunn. (bytes) DES/3DES Trans. (bytes) G G G G G DES/3DES Tunn. (bytes)

8 Plain VoIP Traffic for G.711, G.723.1, G.726 and G.729 Avg E2E Delay [sec] bytes 40bytes 160bytes 60bytes bytes bytes Avg E2E Delay [sec] Avg E2E Delay [sec] 10bytes 20bytes 30bytes 40bytes 50bytes 60bytes 0.09 Number of VoIP calls with G.711 (64kbps) for plain traffic 0.09 Number of VoIP calls with G.726 (24kbps) for plain traffic 0.09 Number of VoIP calls with G.729 (8kbps) for plain traffic Packet Loss Rate % bytes 160bytes 240bytes Packet Loss Rate % bytes 60bytes 80bytes Packet Loss Rate % bytes 20bytes 30bytes 40bytes 50bytes 60bytes 0 Number of VoIP calls with G.711 (64kbps) for plain traffic 0 Number of VoIP calls with G.726 (24kbps) for plain traffic 0 Number of VoIP calls with G.729 (8kbps) for plain traffic Avg E2E Delay [sec] bytes 40bytes Avg E2E Delay [sec] bytes 80bytes 120bytes Avg E2E Delay [sec] bytes 48bytes Number of VoIP calls with G (5.3kbps) for plain traffic 0.09 Number of VoIP calls with G.726 (32kbps) for plain traffic Number of VoIP calls with G (6.3kbps) for plain traffic Packet Loss Rate % bytes 40bytes Packet Loss Rate % Packet Loss Rate % bytes 48bytes 0 Number of VoIP calls with G (5.3kbps) for plain traffic 0 Number of VoIP calls with G.726 (32kbps) for plain traffic 0 Number of VoIP calls with G (6.3kbps) for plain traffic

9 DES & HMAC-SHA-1 Table: Simulation Results for DES & HMAC-SHA-1 Coder Rate (kbps) Payload Size (bytes) Avg. e2e Delay (ms) Packet Loss Rate % Feasible VoIP Calls G G G G G

10 3DES & HMAC-SHA-1 Table: Simulation Results for 3DES & HMAC-SHA-1 Coder Rate (kbps) Payload Size (bytes) Avg. e2e Delay (ms) Packet Loss Rate % Feasible VoIP Calls G G G G G

11 AES (128 bit) & HMAC-SHA-1 Table: Simulation Results for AES (128 bit) & HMAC-SHA-1 Coder Rate (kbps) Payload Size (bytes) Avg. e2e Delay (ms) Packet Loss Rate % Feasible VoIP Calls G G G G G

12 VoIP Quality of Service and Security Which combination of ciphers payloads and codecs to be used is an area of serious considerations for VoIP VoIP unavoidably suffers from the impairments normal packet transmission can suffer There is a significance to the payload size used by the codecs in terms of e2e delay end packet loss rates The crypto-engine seems to perform better with large payload sizes Encryption can add up to 90ms average e2e delay for the same streams in comparison to plain traffic with the same codec

13 VoIP Quality of Service and Security Which combination of ciphers payloads and codecs to be used is an area of serious considerations for VoIP VoIP unavoidably suffers from the impairments normal packet transmission can suffer There is a significance to the payload size used by the codecs in terms of e2e delay end packet loss rates The crypto-engine seems to perform better with large payload sizes Encryption can add up to 90ms average e2e delay for the same streams in comparison to plain traffic with the same codec The default VoIP payload size is not the appropriate selection when encryption is used

14 Thank You

An Optimisation Scheme for IPSec Enabled VoIP Calls over Unicast Transmissions

An Optimisation Scheme for IPSec Enabled VoIP Calls over Unicast Transmissions over Unicast Transmissions Dr Gregory 1 CEH CSTP IPTX MBCS AHEA 1 Institute for Research in Applicable Computing, IRAC Department of Computer Science and Technology, University of Bedfordshire, United

More information

Affects of Queuing Mechanisms on RTP Traffic Comparative Analysis of Jitter, End-to- End Delay and Packet Loss

Affects of Queuing Mechanisms on RTP Traffic Comparative Analysis of Jitter, End-to- End Delay and Packet Loss Comparative Analysis of Jitter, End-to- End Delay and Packet Loss Gregory Epiphaniou 1 Carsten Maple 1 Paul Sant 1 Matthew Reeves 2 1 Institute for Research in Applicable Computing University of Bedfordshire

More information

Introduction to VoIP. Cisco Networking Academy Program Cisco Systems, Inc. All rights reserved. Cisco Public. IP Telephony

Introduction to VoIP. Cisco Networking Academy Program Cisco Systems, Inc. All rights reserved. Cisco Public. IP Telephony Introduction to VoIP Cisco Networking Academy Program 1 Requirements of Voice in an IP Internetwork 2 IP Internetwork IP is connectionless. IP provides multiple paths from source to destination. 3 Packet

More information

Comparing TCP performance of tunneled and non-tunneled traffic using OpenVPN. Berry Hoekstra Damir Musulin OS3 Supervisor: Jan Just Keijser Nikhef

Comparing TCP performance of tunneled and non-tunneled traffic using OpenVPN. Berry Hoekstra Damir Musulin OS3 Supervisor: Jan Just Keijser Nikhef Comparing TCP performance of tunneled and non-tunneled traffic using OpenVPN Berry Hoekstra Damir Musulin OS3 Supervisor: Jan Just Keijser Nikhef Outline Introduction Approach Research Results Conclusion

More information

Parallelizing IPsec: switching SMP to On is not even half the way

Parallelizing IPsec: switching SMP to On is not even half the way Parallelizing IPsec: switching SMP to On is not even half the way Steffen Klassert secunet Security Networks AG Dresden June 11 2010 Table of contents Some basics about IPsec About the IPsec performance

More information

VOIP Network Pre-Requisites

VOIP Network Pre-Requisites VOIP Network Pre-Requisites Executive Summary This document contains basic network requirements that are foundational for good voice quality when using Vogtec VoIP products/solutions over a data network.

More information

Synthesizing Adaptive Protocols by Selective Enumeration (SYNAPSE)

Synthesizing Adaptive Protocols by Selective Enumeration (SYNAPSE) Synthesizing Adaptive Protocols by Selective Enumeration (SYNAPSE) Problem Definition Solution Approach Benefits to End User Talk Overview Metrics Summary of Results to Date Lessons Learned & Future Work

More information

GUIDELINES FOR VOIP NETWORK PREREQUISITES

GUIDELINES FOR VOIP NETWORK PREREQUISITES GUIDELINES FOR VOIP NETWORK PREREQUISITES WHITE PAPER October 2016 Unified Networks Unified User Clients Unified Messaging Mobility 100+ Call Management Features Executive Summary This document contains

More information

Revealing Skype Traffic: When Randomness Plays with You

Revealing Skype Traffic: When Randomness Plays with You Revealing Skype Traffic: When Randomness Plays with You Dario Bonfiglio Marco Mellia Michela Meo Dario Rossi Paolo Tofanelli Our Goal Identify Skype traffic Motivations Operators need to know what is running

More information

Fast packet processing in the cloud. Dániel Géhberger Ericsson Research

Fast packet processing in the cloud. Dániel Géhberger Ericsson Research Fast packet processing in the cloud Dániel Géhberger Ericsson Research Outline Motivation Service chains Hardware related topics, acceleration Virtualization basics Software performance and acceleration

More information

Assessing Call Quality of VoIP and Data Traffic over Wireless LAN

Assessing Call Quality of VoIP and Data Traffic over Wireless LAN Assessing Call Quality of VoIP and Data Traffic over Wireless LAN Wen-Tzu Chen and Chih-Yuan Lee Institute of Telecommunications Management, National Cheng Kung University, No. 1 University Road, Tainan

More information

Performance Evaluation of WiFiRe using OPNET

Performance Evaluation of WiFiRe using OPNET Performance Evaluation of WiFiRe using OPNET Under the guidance of: Prof. Sridhar Iyer and Prof. Varsha Apte Dept. of CSE (KReSIT) July 16, 2007 Goal Goal Building. Finding minimum slot length to support

More information

Bandwidth, Latency, and QoS for Core Components

Bandwidth, Latency, and QoS for Core Components Bandwidth, Latency, and QoS for Core Components, on page 1 Bandwidth, Latency, and QoS for Optional Cisco Components, on page 18 Bandwidth, Latency, and QoS for Optional Third-Party Components, on page

More information

KeyStone C66x Multicore SoC Overview. Dec, 2011

KeyStone C66x Multicore SoC Overview. Dec, 2011 KeyStone C66x Multicore SoC Overview Dec, 011 Outline Multicore Challenge KeyStone Architecture Reminder About KeyStone Solution Challenge Before KeyStone Multicore performance degradation Lack of efficient

More information

Synopsis of Basic VoIP Concepts

Synopsis of Basic VoIP Concepts APPENDIX B The Catalyst 4224 Access Gateway Switch (Catalyst 4224) provides Voice over IP (VoIP) gateway applications for a micro branch office. This chapter introduces some basic VoIP concepts. This chapter

More information

ETSF10 Internet Protocols Transport Layer Protocols

ETSF10 Internet Protocols Transport Layer Protocols ETSF10 Internet Protocols Transport Layer Protocols 2012, Part 2, Lecture 2.1 Kaan Bür, Jens Andersson Transport Layer Protocols Process-to-process delivery [ed.4 ch.23.1] [ed.5 ch.24.1] Transmission Control

More information

SIP-based Mobility Architecture for Next Generation Wireless Networks

SIP-based Mobility Architecture for Next Generation Wireless Networks SIP-based Mobility Architecture for Next Generation Wireless Networks PerCom IEEE 2005 Presented by T.C. Lin 2006/01/25 Outline Introduction Overview of SIP Problem Description Proposed Architecture Performance

More information

OSI Layer OSI Name Units Implementation Description 7 Application Data PCs Network services such as file, print,

OSI Layer OSI Name Units Implementation Description 7 Application Data PCs Network services such as file, print, ANNEX B - Communications Protocol Overheads The OSI Model is a conceptual model that standardizes the functions of a telecommunication or computing system without regard of their underlying internal structure

More information

Investigation of Algorithms for VoIP Signaling

Investigation of Algorithms for VoIP Signaling Journal of Electrical Engineering 4 (2016) 203-207 doi: 10.17265/2328-2223/2016.04.007 D DAVID PUBLISHING Todorka Georgieva 1, Ekaterina Dimitrova 2 and Slava Yordanova 3 1. Telecommunication Department,

More information

QoS on Low Bandwidth High Delay Links. Prakash Shende Planning & Engg. Team Data Network Reliance Infocomm

QoS on Low Bandwidth High Delay Links. Prakash Shende Planning & Engg. Team Data Network Reliance Infocomm QoS on Low Bandwidth High Delay Links Prakash Shende Planning & Engg. Team Data Network Reliance Infocomm Agenda QoS Some Basics What are the characteristics of High Delay Low Bandwidth link What factors

More information

LANCOM Techpaper Routing Performance

LANCOM Techpaper Routing Performance LANCOM Techpaper Routing Performance Applications for communications and entertainment are increasingly based on IP networks. In order to ensure that the necessary bandwidth performance can be provided

More information

IPSec. Overview. Overview. Levente Buttyán

IPSec. Overview. Overview. Levente Buttyán IPSec - brief overview - security associations (SAs) - Authentication Header (AH) protocol - Encapsulated Security Payload () protocol - combining SAs (examples) Overview Overview IPSec is an Internet

More information

REACTION PAPER 01 TEL 500

REACTION PAPER 01 TEL 500 TEL 500 Session Initiation Protocol Improvement Using Inter-Asterisk exchange Introduction: Within the VoIP network environment, H323, SIP and IAX are three protocols that solve the problem of voice packet

More information

Network Design Considerations for Grid Computing

Network Design Considerations for Grid Computing Network Design Considerations for Grid Computing Engineering Systems How Bandwidth, Latency, and Packet Size Impact Grid Job Performance by Erik Burrows, Engineering Systems Analyst, Principal, Broadcom

More information

CT506 LANforge-FIRE VoIP Call Generator

CT506 LANforge-FIRE VoIP Call Generator 1 of 9 Network Testing and Emulation Solutions http://www.candelatech.com sales@candelatech.com +1 360 380 1618 [PST, GMT -8] CT506 LANforge-FIRE VoIP Call Generator The CT506 supports SIP VOIP call support,

More information

PacketShader: A GPU-Accelerated Software Router

PacketShader: A GPU-Accelerated Software Router PacketShader: A GPU-Accelerated Software Router Sangjin Han In collaboration with: Keon Jang, KyoungSoo Park, Sue Moon Advanced Networking Lab, CS, KAIST Networked and Distributed Computing Systems Lab,

More information

Impact of Voice Payload Size on Behaviour of the Field Network of the Armed Forces of the Czech Republic

Impact of Voice Payload Size on Behaviour of the Field Network of the Armed Forces of the Czech Republic Impact of Voice Payload Size on Behaviour of the Field Network of the Armed Forces of the Czech Republic Zuzana Vranova, Antonin Mazalek Faculty of Military Technology University of Defence Brno, Czech

More information

Speech Quality Evaluation in IPsec Environment

Speech Quality Evaluation in IPsec Environment Speech Quality Evaluation in IPsec Environment MIROSLAV VOZNAK FILIP REZAC MICHAL HALAS 2 CESNET, z.s.p.o. Zikova 4, 60 00 Prague CZECH REPUBLIC miroslav.voznak@vsb.cz, filip.rezac@vsb.cz 2 Slovak Technical

More information

Theoretical and Practical Aspects of Triple Play

Theoretical and Practical Aspects of Triple Play Theoretical and Practical Aspects of Triple Play 1. Introduction 2. Network and Protocol Architecture for Triple Play 3. Characteristics and Parameters of Triple Play 4. Main QoS and QoE Methods and Standards

More information

Voice over IPSec. Emilia Rosti Dip. Informatica e Comunicazione Univ. Degli Studi di Milano

Voice over IPSec. Emilia Rosti Dip. Informatica e Comunicazione Univ. Degli Studi di Milano Voice over IPSec Emilia Rosti Dip. Informatica e Comunicazione Univ. Degli Studi di Milano Outline IP refresher IPSec VoIP and QoS - basics VoIPSec Experiments Results 2 IP refresher - network layers 3

More information

Legacy-Compliant Data Authentication for Industrial Control System Traffic

Legacy-Compliant Data Authentication for Industrial Control System Traffic Legacy-Compliant Data Authentication for Industrial Control System Traffic John Henry Castellanos, Daniele Antonioli, Nils Ole Tippenhauer and Martín Ochoa Singapore University of Technology and Design

More information

DHP-W313AV. PowerLine AV500 Wireless AC600 Starter Kit. Product Release

DHP-W313AV. PowerLine AV500 Wireless AC600 Starter Kit. Product Release DHP-W313AV PowerLine AV500 Wireless AC600 Starter Kit Product Release Key Selling Points Wireless AC600 PowerLine AV500 (500Mbps) Draft IEEE 1905.1 Hybrid Technology Wall-Plug design for more convenience

More information

VoIP Testing with IxChariot

VoIP Testing with IxChariot VoIP Testing with IxChariot Contents 1. VoIP Testing with IxChariot... 1 1.1 Key Facts... 1 2. Determine Voice Quality Deterioration with Increasing Application Traffic Load... 1 2.1 Objective and Setup...

More information

An In-depth Study of LTE: Effect of Network Protocol and Application Behavior on Performance

An In-depth Study of LTE: Effect of Network Protocol and Application Behavior on Performance An In-depth Study of LTE: Effect of Network Protocol and Application Behavior on Performance Authors: Junxian Huang, Feng Qian, Yihua Guo, Yuanyuan Zhou, Qiang Xu, Z. Morley Mao, Subhabrata Sen, Oliver

More information

Troubleshooting Packet Loss. Steven van Houttum

Troubleshooting Packet Loss. Steven van Houttum Troubleshooting Packet Loss Steven van Houttum INTRODUCTION Steven van Houttum Consultant/Trainer MVP Office Server & Services (Skype for Business) TROUBLESHOOTING PACKET LOSS, IS IT REALLY THE NETWORK?

More information

Mobility Management for VoIP on Heterogeneous Networks: Evaluation of Adaptive Schemes

Mobility Management for VoIP on Heterogeneous Networks: Evaluation of Adaptive Schemes Mobility Management for VoIP on Heterogeneous Networks: Evaluation of Adaptive Schemes Authors:Massimo Bernaschi, Filippo Cacace, Giulio Lannello Presented by:rukmini Sarvamangala OBJECTIVE OF THE PAPER

More information

RUGE. Rugged IP load generator (Ruge) Ruge gives your network a serious beating. Just to make sure it does not fail when it is time to go live.

RUGE. Rugged IP load generator (Ruge) Ruge gives your network a serious beating. Just to make sure it does not fail when it is time to go live. PRODUCT DATA SHEET Rugged IP load generator (Ruge) RUGE Ruge gives your network a serious beating. Just to make sure it does not fail when it is time to go live. Introduction Rugged IP load generator (Ruge)

More information

Asynchronous Transfer Mode (ATM) ATM concepts

Asynchronous Transfer Mode (ATM) ATM concepts Asynchronous Transfer Mode (ATM) Asynchronous Transfer Mode (ATM) is a switching technique for telecommunication networks. It uses asynchronous time-division multiplexing,[1][2] and it encodes data into

More information

6WINDGate. White Paper. Packet Processing Software for Wireless Infrastructure

6WINDGate. White Paper. Packet Processing Software for Wireless Infrastructure Packet Processing Software for Wireless Infrastructure Last Update: v1.0 - January 2011 Performance Challenges for Wireless Networks As advanced services proliferate and video consumes an ever-increasing

More information

SONET/SDH VCAT SONET VCAT

SONET/SDH VCAT SONET VCAT SONET/SDH VCAT SONET/SDH networks have been deployed and heavily utilized for many years. These networks where designed for the efficient transport of DS0 voice circuits. Service providers, who have made

More information

Secure Networking with NAT Traversal for Enhanced Mobility

Secure Networking with NAT Traversal for Enhanced Mobility Secure Networking with NAT Traversal for Enhanced Mobility Lubomir Cvrk 1, Vit Vrba 1 1 Brno University of Technology, Dept. of Telecommunications, Purkynova 118, 61200 Brno, Czech Republic {cvrk, vrba}@westcom.cz

More information

1 Gbps and 10 Gbps WAN Emulator IPNetSim

1 Gbps and 10 Gbps WAN Emulator IPNetSim 1 Gbps and 10 Gbps WAN Emulator IPNetSim Multi Stream IP WAN Emulator 818 West Diamond Avenue - Third Floor, Gaithersburg, MD 20878 Phone: (301) 670-4784 Fax: (301) 670-9187 Email: gl-info@gl.com Website:

More information

VOIP and Video on a City-wide Scale

VOIP and Video on a City-wide Scale VOIP and Video on a City-wide Scale VOIP packets inefficient over 802.11 protocols Intended for asynchronous not isochronous networking. Poor latency and jitter control, degrades with more clients Backhaul

More information

Traffic Behaviour of VoIP in a Simulated Access Network

Traffic Behaviour of VoIP in a Simulated Access Network Complete Citation: Das Gupta, Jishu and Howard, Srecko and Howard, Angela (2006). Traffic behaviour of VoIP in a simulated access network. International Transactions on Engineering, Computing and Technology,

More information

Cross-Layer Architecture for H.264 Video Streaming in Heterogeneous DiffServ Networks

Cross-Layer Architecture for H.264 Video Streaming in Heterogeneous DiffServ Networks Cross-Layer Architecture for H.264 Video Streaming in Heterogeneous DiffServ Networks Gabriel Lazar, Virgil Dobrota, Member, IEEE, Tudor Blaga, Member, IEEE 1 Agenda I. Introduction II. Reliable Multimedia

More information

Alcatel OmniPCX Enterprise

Alcatel OmniPCX Enterprise Alcatel OmniPCX Enterprise QoS for VoIP Overview 1 OBJECTIVE: Describe the essential parameters for QoS The QoS parameters regarding the data network IP Packet Transfer Delay (IPTD): Time for the packet

More information

Solutions to Performance Problems in VoIP Over a Wireless LAN

Solutions to Performance Problems in VoIP Over a Wireless LAN Solutions to Performance Problems in VoIP Over a 802.11 Wireless LAN Wei Wang, Soung C. Liew, and VOK Li, Solutions to Performance Problems in VoIP over a 802.11 Wireless LAN, IEEE Transactions On Vehicular

More information

TinySec: A Link Layer Security Architecture for Wireless Sensor Networks. Presented by Paul Ruggieri

TinySec: A Link Layer Security Architecture for Wireless Sensor Networks. Presented by Paul Ruggieri TinySec: A Link Layer Security Architecture for Wireless Sensor Networks Chris Karlof, Naveen Sastry,, David Wagner Presented by Paul Ruggieri 1 Introduction What is TinySec? Link-layer security architecture

More information

An Effective Calibration of VOIP Internet Telephony Performance using VPN between PAC and PNS

An Effective Calibration of VOIP Internet Telephony Performance using VPN between PAC and PNS An Effective Calibration of VOIP Internet Telephony Performance using VPN between PAC and PNS Hyung Moo Kim, and Jae Soo Yoo, Member, IEEE Abstract In this paper, we have created VoIP terminals that use

More information

The IPsec protocols. Overview

The IPsec protocols. Overview The IPsec protocols -- components and services -- modes of operation -- Security Associations -- Authenticated Header (AH) -- Encapsulated Security Payload () (c) Levente Buttyán (buttyan@crysys.hu) Overview

More information

Managing the Performance of Enterprise and Residential VoIP Services. Alan Clark Telchemy

Managing the Performance of Enterprise and Residential VoIP Services. Alan Clark Telchemy Managing the Performance of Enterprise and Residential VoIP Services Alan Clark Telchemy Outline Problems affecting Residential VoIP and Teleworkers VoIP Performance and Quality Challenges VoIP Performance

More information

LOGICAL ADDRESSING. Faisal Karim Shaikh.

LOGICAL ADDRESSING. Faisal Karim Shaikh. LOGICAL ADDRESSING Faisal Karim Shaikh faisal.shaikh@faculty.muet.edu.pk DEWSNet Group Dependable Embedded Wired/Wireless Networks www.fkshaikh.com/dewsnet IPv4 ADDRESSES An IPv4 address is a 32-bit address

More information

Performance Evaluation of VoIP over VANET

Performance Evaluation of VoIP over VANET (International Journal of Computer Science & Management Studies) Vol. 17, Issue 01 Performance Evaluation of VoIP over VANET Dr. Khalid Hamid Bilal Khartoum, Sudan dr.khalidbilal@hotmail.com Publishing

More information

InfiniBand SDR, DDR, and QDR Technology Guide

InfiniBand SDR, DDR, and QDR Technology Guide White Paper InfiniBand SDR, DDR, and QDR Technology Guide The InfiniBand standard supports single, double, and quadruple data rate that enables an InfiniBand link to transmit more data. This paper discusses

More information

Scaling Acceleration Capacity from 5 to 50 Gbps and Beyond with Intel QuickAssist Technology

Scaling Acceleration Capacity from 5 to 50 Gbps and Beyond with Intel QuickAssist Technology SOLUTION BRIEF Intel QuickAssist Technology Scaling Acceleration Capacity from 5 to 5 Gbps and Beyond with Intel QuickAssist Technology Equipment manufacturers can dial in the right capacity by choosing

More information

THE EFFICIENCY OF CONSTRAINT BASED ROUTING IN MPLS NETWORKS

THE EFFICIENCY OF CONSTRAINT BASED ROUTING IN MPLS NETWORKS VOLUME: 9 NUMBER: 5 SPECIAL ISSUE THE EFFICIENCY OF CONSTRAINT BASED ROUTING IN MPLS NETWORKS Martin MEDVECKY Department of Telecommunications, Faculty of Electrical Engineering and Information Technology,

More information

Virtual Private Networks (VPN)

Virtual Private Networks (VPN) CYBR 230 Jeff Shafer University of the Pacific Virtual Private Networks (VPN) 2 Schedule This Week Mon September 4 Labor Day No class! Wed September 6 VPN Project 1 Work Fri September 8 IPv6? Project 1

More information

Outline. QoS routing in ad-hoc networks. Real-time traffic support. Classification of QoS approaches. QoS design choices

Outline. QoS routing in ad-hoc networks. Real-time traffic support. Classification of QoS approaches. QoS design choices Outline QoS routing in ad-hoc networks QoS in ad-hoc networks Classifiction of QoS approaches Instantiation in IEEE 802.11 The MAC protocol (recap) DCF, PCF and QoS support IEEE 802.11e: EDCF, HCF Streaming

More information

Introductions. Computer Networking Lecture 01. January 16, HKU SPACE Community College. HKU SPACE CC CN Lecture 01 1/36

Introductions. Computer Networking Lecture 01. January 16, HKU SPACE Community College. HKU SPACE CC CN Lecture 01 1/36 Introductions Computer Networking Lecture 01 HKU SPACE Community College January 16, 2012 HKU SPACE CC CN Lecture 01 1/36 Outline What is a Computer Network? Basic Requirements of Building a Computer Network

More information

A Comprehensive Secure VoIP Solution

A Comprehensive Secure VoIP Solution International Journal of Network Security, Vol.5, No.2, PP.233 240, Sept. 2007 233 A Comprehensive Secure VoIP Solution Ashraf D. Elbayoumy and Simon Shepherd (Corresponding author: Ashraf D. Elbayoumy)

More information

Master s Thesis. TCP Congestion Control Mechanisms for Achieving Predictable Throughput

Master s Thesis. TCP Congestion Control Mechanisms for Achieving Predictable Throughput Master s Thesis Title TCP Congestion Control Mechanisms for Achieving Predictable Throughput Supervisor Prof. Hirotaka Nakano Author Kana Yamanegi February 14th, 2007 Department of Information Networking

More information

Computer Networks 1 (Mạng Máy Tính 1) Lectured by: Dr. Phạm Trần Vũ

Computer Networks 1 (Mạng Máy Tính 1) Lectured by: Dr. Phạm Trần Vũ Computer Networks 1 (Mạng Máy Tính 1) Lectured by: Dr. Phạm Trần Vũ 1 Lecture 5: Network Layer (cont ) Reference: Chapter 5 - Computer Networks, Andrew S. Tanenbaum, 4th Edition, Prentice Hall, 2003. 2

More information

UDP-Lite Enhancement Through Checksum Protection

UDP-Lite Enhancement Through Checksum Protection IOP Conference Series: Materials Science and Engineering PAPER OPEN ACCESS UDP-Lite Enhancement Through Checksum Protection To cite this article: Suherman et al 2017 IOP Conf. Ser.: Mater. Sci. Eng. 180

More information

Improving Application Performance and Predictability using Multiple Virtual Lanes in Modern Multi-Core InfiniBand Clusters

Improving Application Performance and Predictability using Multiple Virtual Lanes in Modern Multi-Core InfiniBand Clusters Improving Application Performance and Predictability using Multiple Virtual Lanes in Modern Multi-Core InfiniBand Clusters Hari Subramoni, Ping Lai, Sayantan Sur and Dhabhaleswar. K. Panda Department of

More information

A Hybrid Architecture for Video Transmission

A Hybrid Architecture for Video Transmission 2017 Asia-Pacific Engineering and Technology Conference (APETC 2017) ISBN: 978-1-60595-443-1 A Hybrid Architecture for Video Transmission Qian Huang, Xiaoqi Wang, Xiaodan Du and Feng Ye ABSTRACT With the

More information

VoIP. ALLPPT.com _ Free PowerPoint Templates, Diagrams and Charts

VoIP. ALLPPT.com _ Free PowerPoint Templates, Diagrams and Charts VoIP ALLPPT.com _ Free PowerPoint Templates, Diagrams and Charts VoIP System Gatekeeper: A gatekeeper is useful for handling VoIP call connections includes managing terminals, gateways and MCU's (multipoint

More information

Delay Controlled Elephant Flow Rerouting in Software Defined Network

Delay Controlled Elephant Flow Rerouting in Software Defined Network 1st International Conference on Advanced Information Technologies (ICAIT), Nov. 1-2, 2017, Yangon, Myanmar Delay Controlled Elephant Flow Rerouting in Software Defined Network Hnin Thiri Zaw, Aung Htein

More information

AN ENGINEER S GUIDE TO TMoIP

AN ENGINEER S GUIDE TO TMoIP AN ENGINEER S GUIDE TO TMoIP Richard W. Hoffman III GDP Space Systems ABSTRACT As telemetry transport systems move inexorably closer to a unified telemetry-over-ip approach, the operators and engineers

More information

Quantifying Skype User Satisfaction

Quantifying Skype User Satisfaction EECS443: Skype satisfaction presentation p. 1/14 Quantifying Skype User Satisfaction Kuan-Ta Chen, Chun-Ying Huang, Polly Huang, and Chin-Laung Lei SIGCOMM 06, Sep 2006, Pisa, Italy. EECS443: Skype satisfaction

More information

Performance Implications of Security Protocols

Performance Implications of Security Protocols Performance Implications of Security Protocols Varsha Mainkar Technical Staff Member Network Design & Performance Analysis Advanced Technologies, Joint Work with Paul Reeser 5th INFORMS Telecom Conference

More information

Multimedia Streaming. Mike Zink

Multimedia Streaming. Mike Zink Multimedia Streaming Mike Zink Technical Challenges Servers (and proxy caches) storage continuous media streams, e.g.: 4000 movies * 90 minutes * 10 Mbps (DVD) = 27.0 TB 15 Mbps = 40.5 TB 36 Mbps (BluRay)=

More information

A Study on the Behaviour of SAODV with TCP and SCTP Protocols in Mobile Adhoc Networks

A Study on the Behaviour of SAODV with TCP and SCTP Protocols in Mobile Adhoc Networks International Journal of Research in Advent Technology, Vol.6, No.8, August 218 A Study on the Behaviour of SAODV with TCP and SCTP Protocols in Mobile Adhoc Networks S. Mahalakshmi 1, Dr. K. Geetha 2

More information

Scalability Considerations

Scalability Considerations 3 CHAPTER This chapter presents the following steps to selecting Cisco products for a VPN solution: Sizing the headend Choosing Cisco products that can be deployed for headend devices Product sizing and

More information

Multimedia Networking

Multimedia Networking Multimedia Networking #2 Multimedia Networking Semester Ganjil 2012 PTIIK Universitas Brawijaya #2 Multimedia Applications 1 Schedule of Class Meeting 1. Introduction 2. Applications of MN 3. Requirements

More information

Quality of Service Mechanism for MANET using Linux Semra Gulder, Mathieu Déziel

Quality of Service Mechanism for MANET using Linux Semra Gulder, Mathieu Déziel Quality of Service Mechanism for MANET using Linux Semra Gulder, Mathieu Déziel Semra.gulder@crc.ca, mathieu.deziel@crc.ca Abstract: This paper describes a QoS mechanism suitable for Mobile Ad Hoc Networks

More information

voice-enabling.book Page 72 Friday, August 23, :19 AM

voice-enabling.book Page 72 Friday, August 23, :19 AM voice-enabling.book Page 72 Friday, August 23, 2002 11:19 AM voice-enabling.book Page 73 Friday, August 23, 2002 11:19 AM C H A P T E R 4 Offering Bundled and Data Services Chapter 2, VoIP Network Architectures:

More information

CCNA 1 Chapter 7 v5.0 Exam Answers 2013

CCNA 1 Chapter 7 v5.0 Exam Answers 2013 CCNA 1 Chapter 7 v5.0 Exam Answers 2013 1 A PC is downloading a large file from a server. The TCP window is 1000 bytes. The server is sending the file using 100-byte segments. How many segments will the

More information

Multimedia Applications. Classification of Applications. Transport and Network Layer

Multimedia Applications. Classification of Applications. Transport and Network Layer Chapter 2: Representation of Multimedia Data Chapter 3: Multimedia Systems Communication Aspects and Services Multimedia Applications and Communication Protocols Quality of Service and Resource Management

More information

Performance implication of elliptic curve TLS

Performance implication of elliptic curve TLS MSc Systems & Network Engineering Performance implication of elliptic curve TLS Maikel de Boer - maikel.deboer@os3.nl Joris Soeurt - joris.soeurt@os3.nl April 1, 2012 Abstract During our research we tested

More information

ABSTRACT. that it avoids the tolls charged by ordinary telephone service

ABSTRACT. that it avoids the tolls charged by ordinary telephone service ABSTRACT VoIP (voice over IP - that is, voice delivered using the Internet Protocol) is a term used in IP telephony for a set of facilities for managing the delivery of voice information using the Internet

More information

WHITE PAPER. Latency & Jitter WHITE PAPER OVERVIEW

WHITE PAPER. Latency & Jitter WHITE PAPER OVERVIEW Latency & Jitter In Networking Performance Evaluation OVERVIEW Latency and jitter are two key measurement parameters when evaluating and benchmarking the performance of a network, system or device. Different

More information

Lecture 2: Network Protocols and Layering

Lecture 2: Network Protocols and Layering Lecture 2: Network Protocols and Layering Dr. Mohammed Hawa Electrical Engineering Department University of Jordan EE426: Communication Networks What is a Network Protocol? A protocol is the set of rules

More information

LANCOM Techpaper IEEE n Indoor Performance

LANCOM Techpaper IEEE n Indoor Performance Introduction The standard IEEE 802.11n features a number of new mechanisms which significantly increase available bandwidths. The former wireless LAN standards based on 802.11a/g enable physical gross

More information

Performance Study of COPS over TLS and IPsec Secure Session

Performance Study of COPS over TLS and IPsec Secure Session Performance Study of COPS over TLS and IPsec Secure Session Yijun Zeng and Omar Cherkaoui Université du Québec à Montréal CP. 8888 Suc. A, Montréal yj_zeng@hotmail.com, cherkaoui.omar@uqam.ca Abstract.

More information

Performance of Host Identity Protocol on Lightweight Hardware

Performance of Host Identity Protocol on Lightweight Hardware Performance of Host Identity Protocol on Lightweight Hardware Andrey Khurri, Ekaterina Vorobyeva, Andrei Gurtov Helsinki Institute for Information Technology MobiArch'07 Kyoto,

More information

Evaluating the Impact of RDMA on Storage I/O over InfiniBand

Evaluating the Impact of RDMA on Storage I/O over InfiniBand Evaluating the Impact of RDMA on Storage I/O over InfiniBand J Liu, DK Panda and M Banikazemi Computer and Information Science IBM T J Watson Research Center The Ohio State University Presentation Outline

More information

Outline. Computer Communication and Networks. The Network Core. Components of the Internet. The Network Core Packet Switching Circuit Switching

Outline. Computer Communication and Networks. The Network Core. Components of the Internet. The Network Core Packet Switching Circuit Switching Outline Computer Communication and Networks 1 Department of Computer Science & Information Technology University of Balochistan Lecture 03 1/26 2/26 Two major components The mesh of packet switches and

More information

Parameter Equipment Motivation Monitoring method. Smooth play-out Test stream

Parameter Equipment Motivation Monitoring method. Smooth play-out Test stream IP transport requirements Packet Loss Ratio The ratio between the number of the packets lost in the network total and number the of transmitted packets1. Latency The time interval between initial transmission

More information

CN-100 Network Analyzer Product Overview

CN-100 Network Analyzer Product Overview CN-100 Network Analyzer Product Overview CN-100 network analyzers offer an extremely powerful yet cost effective solution for today s complex networking requirements. Test Ethernet or ATM networks with

More information

Cisco Optimizing Converged Cisco Networks. Practice Test. Version 2.6. https://certkill.com

Cisco Optimizing Converged Cisco Networks. Practice Test. Version 2.6. https://certkill.com Cisco 642-845 642-845 Optimizing Converged Cisco Networks Practice Test Version 2.6 QUESTION NO: 1 Cisco 642-845: Practice Exam Refer to the exhibit. NBAR is to be configured on router R1 to limit outgoing

More information

VoIP Basics. 2005, NETSETRA Corporation Ltd. All rights reserved.

VoIP Basics. 2005, NETSETRA Corporation Ltd. All rights reserved. VoIP Basics Phone Network Typical SS7 Network Architecture What is VoIP? (or IP Telephony) Voice over IP (VoIP) is the transmission of digitized telephone calls over a packet switched data network (like

More information

CS 457 Multimedia Applications. Fall 2014

CS 457 Multimedia Applications. Fall 2014 CS 457 Multimedia Applications Fall 2014 Topics Digital audio and video Sampling, quantizing, and compressing Multimedia applications Streaming audio and video for playback Live, interactive audio and

More information

Implementation of Adaptive Buffer in Video Receivers Using Network Processor IXP 2400

Implementation of Adaptive Buffer in Video Receivers Using Network Processor IXP 2400 The International Arab Journal of Information Technology, Vol. 6, No. 3, July 2009 289 Implementation of Adaptive Buffer in Video Receivers Using Network Processor IXP 2400 Kandasamy Anusuya, Karupagouder

More information

XCo: Explicit Coordination for Preventing Congestion in Data Center Ethernet

XCo: Explicit Coordination for Preventing Congestion in Data Center Ethernet XCo: Explicit Coordination for Preventing Congestion in Data Center Ethernet Vijay Shankar Rajanna, Smit Shah, Anand Jahagirdar and Kartik Gopalan Computer Science, State University of New York at Binghamton

More information

Computer Networks and reference models. 1. List of Problems (so far)

Computer Networks and reference models. 1. List of Problems (so far) Computer s and reference models Chapter 2 1. List of Problems (so far) How to ensure connectivity between users? How to share a wire? How to pass a message through the network? How to build Scalable s?

More information

Networking for Data Acquisition Systems. Fabrice Le Goff - 14/02/ ISOTDAQ

Networking for Data Acquisition Systems. Fabrice Le Goff - 14/02/ ISOTDAQ Networking for Data Acquisition Systems Fabrice Le Goff - 14/02/2018 - ISOTDAQ Outline Generalities The OSI Model Ethernet and Local Area Networks IP and Routing TCP, UDP and Transport Efficiency Networking

More information

Configuring RTP Header Compression

Configuring RTP Header Compression Header compression is a mechanism that compresses the IP header in a packet before the packet is transmitted. Header compression reduces network overhead and speeds up the transmission of either Real-Time

More information

Implementation of Embedded SIP-based VoIPv6 System

Implementation of Embedded SIP-based VoIPv6 System Implementation of Embedded SIP-based VoIPv6 System Pre Dr. Han-Chieh Chao Department of Electronic Engineering National Ilan University Email: hcc@niu.edu.tw Drivers for IPv6 2 Drivers for IPv6 Mobile

More information

Cisco 5921 Embedded Services Router

Cisco 5921 Embedded Services Router Data Sheet Cisco 5921 Embedded Services Router The Cisco 5921 Embedded Services Router (ESR) is a Cisco IOS software router application. It is designed to operate on small, low-power, Linux-based platforms

More information

Network-Adaptive Video Coding and Transmission

Network-Adaptive Video Coding and Transmission Header for SPIE use Network-Adaptive Video Coding and Transmission Kay Sripanidkulchai and Tsuhan Chen Department of Electrical and Computer Engineering, Carnegie Mellon University, Pittsburgh, PA 15213

More information