Testing Network Performance with Real Traffic

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "Testing Network Performance with Real Traffic"

Transcription

1 Testing Network Performance with Real Traffic Mike Danseglio w w w. s c r i p t l o g i c. c o m / s m b I T

2 2011 ScriptLogic Corporation ALL RIGHTS RESERVED. ScriptLogic, the ScriptLogic logo and Point,Click,Done! are trademarks and registered trademarks of ScriptLogic Corporation in the United States of America and other countries. All other trademarks and registered trademarks are property of their respective owners. 2 Testing Network Performance with Real Traffic

3 Is your network utilization different from year to year? How about day to day or even minute to minute? There are virtually no network caretakers that believe their network remains consistent over time. Network traffic is unpredictable. A number of factors enter in to causing this unpredictability. But the net impact is that an effective network administrator needs to understand the impact of changing network traffic. This article shows you the common pitfalls that network administrators encounter as the analyze existing and new network capacity. You ll also see what the impact of the changing traffic patterns can be, and the tools that you can use to both understand and plan your network effectively. In particular you will learn how network impact is not just measured in traffic volume. This common misconception leads to far too many network utilization issues. Often network latency and dropped packets are more likely caused by the types of traffic and how they are handled. But there are straightforward methods to identify this situation and enable you to choose a resolution that fits your requirements. All Traffic is Not Created Equal You ve watched video over the Internet. But have you ever wondered how the video renders seamlessly in your browser? We take it for granted that once the video starts it plays smoothly and without major interruptions. Delays and rebuffering errors have decreased exponentially over the last few years as a direct result of three factors: increased bandwidth, lower latency, and better codecs. Under the covers, Internet-based video can consume a ton of bandwidth. It is easy for a network administrator to blame video content for poor network performance and block it from her infrastructure. But video isn t really to blame. Most codecs and applications treat video transfer as low-priority traffic. Now consider the use of PC-based video and audio conferencing systems like Go To Meeting or Microsoft Live Meeting. How is it that the performance for these applications remains acceptable even when the network is very busy? It is a result of the previously mentioned factors and also that network traffic with a higher business value or less tolerant to network interruption is prioritized higher than other traffic. This type of behavior is usually referred to broadly as Quality of Service (QoS) and is implemented in most network components and hosts. For example, a network switch that encounters both Microsoft Live Meeting and YouTube traffic at the same time typically gives preference to the Live Meeting traffic because this traffic carries time-sensitive information such as interactive audio and video conversations. The switch may delay or drop the YouTube traffic if necessary to preserve the QoS of the Live Meeting stream. While this is probably a good thing, failing to account for this behavior during planning and operations causes confusion in capacity management and network performance analysis. A network manager might believe that a highly utilized network is impacting critical business functions when it actually is not. The best way to find out, as you ll see, is to test it out. 3 Testing Network Performance with Real Traffic

4 Understanding Traffic Impact on Infrastructure Most networks have a variety of traffic including video, audio, large data transfers, small data transfers, etc. Each of these uses, and indeed each application, may have a different expectation of network performance. Voice over IP (VoIP) applications expect very low network latency, and streaming video applications account for higher latency and dropped packets. While this statement seems obvious, it is different for each network, and does not actually apply to some implementations. Your business places an importance on different traffic types that is unique to your business model, users, management, etc. The use of different traffic types and the requirements for the performance of each type are the two components that should guide your network analysis and planning. Notice that I didn t mention traffic capacity. Actually, raw network traffic capacity is becoming less of a concern in today s infrastructure. Surplus capacity is prevalent. But that doesn t mean everything works perfectly. Testing Networks with Accurate Traffic Simulations To actually find out whether networks are handing your unique requirements as expected, you need to test them with the kind of traffic that is in use on your network today. Throwing random packets onto the wire is fun, sure, but the test results are valid only when all users throw random packets onto the wire. As you can guess, very few networks are like that. For example, a common network traffic analysis might break down to look something like this: Figure 1: Network Traffic Utilization Your network testing needs to account for this pattern. Luckily there are two ways you can make this happen: replaying recorded network traffic and simulating the traffic types. This is the only way to accurately determine how far you can push your infrastructure before it fails to meet expectations. Accurate testing is also the only way to really determine whether a vendor s product will meet your needs, regardless of stated product specifications. 4 Testing Network Performance with Real Traffic

5 Before we get into the specifics of network testing procedures we need to define the network you will test on. The test network must accurately represent the production infrastructure. A common misconception is that the test network must be a 1:1 representation. The same components must exist if the test requires them, for example a switch, a bridge, a stateful inspection firewall, and so on. But a test network is nearly always a smaller scale. In my experience I ve only seen two test networks that were 1:1 mirrors of their production counterpart, and these were created for very specific reasons. Network Replay Testing This option is the most widely used because it has been available for years and is largely unchanged. To test, the network administrator records a sample of network traffic using a network monitoring device or software package such as Wireshark or Network Monitor. The sample needs to be large enough to accurately represent use of the network over time so it should be at least a day s worth and recorded from more than one point in the network. 5 Testing Network Performance with Real Traffic Figure 2: Wireshark Traffic info The recorded traffic sample is then taken to an isolated test network and replayed onto the wire. Performance is measured at the appropriate points such as the client, the switch, the Internet connection point, and so on. This test validates the network performance under as accurate a load as possible it is really what happened on the network. Most network administrators find value in further testing the network by performing a stress test. This test is actually very simple to implement with the recorded traffic: 1. Use the same infrastructure and recorded traffic as the performance test 2. Replay the recorded traffic from multiple systems simultaneously 3. Continue increasing the systems replaying traffic until something breaks 4. Analyze the break to learn the maximum capacity threshold, point of failure, and then predict possible future breaks The chief drawback to using recorded traffic to test network performance is that some traffic is time-bound and dynamic. As a result it will not accurately represent the network. One example of this is a momentary network condition that corrupts some traffic and causes applications to receive out of sequence packets. The error recovery

6 is very difficult to create using replay. Another challenge is time-stamped data. Many applications ensure that data is not compromised by an attacker by time-stamping it, and that traffic will likely not be valid during a replay attack. This could cause applications to both drop the suspect traffic and decrease network load, or go into a retry state and increase network load. Network Traffic Simulation Testing Simulating network traffic using a hardware or software traffic generator is both an old and new approach. Applications have been around for some time that randomly create valid network packets and put them on the wire. The packets can be somewhat customized to carry specific payload sizes; require routing, and other basic choices. Figure 3: Traffic Generators Previous network traffic generators were limited in what traffic they could generate and transmit. This was often due to limited computer or device computing power or network interface restrictions. As a result the older traffic generators were unable to truly flood a network segment or link. While this could still be useful for testing normal load, it could fall short of truly stress-testing a network or infrastructure. Another limit was the interface and usability of the actual appliance, which frequently required in-depth training to deploy correctly. Modern network traffic generators are far more useful than their predecessors. They are streamlined to take advantage of more computing and network interface resources and are more efficient than ever before. Commonplace operating systems like Windows have also opened up resources to applications that require this level of performance while maintaining a common look and feel. The result of these advancements is applicationstyle software that runs on Windows and is simple to use, yet can generate any style and volume of traffic, from small quantities of pseudo-random data to enough QoS-specific data to make even the most robust network break down and expose the weak points. The network traffic generator is particularly useful when you need to conduct realistic testing of unique network applications. It is often used in conjunction with functional testing. For example, to validate that VoIP performance is not impacted by other network traffic, you can perform this test: 6 Testing Network Performance with Real Traffic

7 1. Setup a test network with two VoIP clients, a VoIP server, and the intermediate network infrastructure and configuration that represents your environment 2. Establish a VoIP conversation using the same software or devices that are used in the production environment 3. Introduce a random traffic generator that creates common traffic on the same segment at the same volume as your typical network load 4. Turn up the traffic volume and packet size until the network is nearly saturated In this test the VoIP traffic is typically prioritized higher than the traffic coming from the generator. The expected result is that the VoIP conversation remains clear while the network infrastructure avoids jitter or packet loss for the VoIP packets. Other packets will likely drop or become delayed, but that s fine. It is the higher priority traffic that we are testing. A Word of Caution You surely already understand that a test network must be completely isolated from the production environment. This is not unique to network bandwidth testing pretty much any kind of stress test must be isolated to ensure it doesn t impact the rest of the IT infrastructure. But network playback and traffic generation testing evoke a somewhat unique response. Almost any firewall will slam shut and set off every alert it has when you begin these tests. It doesn t really matter whether the firewall runs on Windows, a router, a switch, a dedicated filter, or anything else. Firewalls are designed to detect and prevent exactly what you re intentionally doing during these tests. From a security view these tests often look identical to a denial of service (DoS) attack, many of which have profoundly impacted businesses. For that reason you will probably need to disable all firewalls in the test environment. And if, somehow, the test network is connected to the production network, you can expect a rapid and wholly unpleasant response to your test. 7 Testing Network Performance with Real Traffic

whitepaper Network Traffic Analysis Using Cisco NetFlow Taking the Guesswork Out of Network Performance Management

whitepaper Network Traffic Analysis Using Cisco NetFlow Taking the Guesswork Out of Network Performance Management whitepaper Network Traffic Analysis Using Cisco NetFlow Taking the Guesswork Out of Network Performance Management Taking the Guesswork Out of Network Performance Management EXECUTIVE SUMMARY Many enterprise

More information

Hosted Voice. Best Practice Recommendations for VoIP Deployments

Hosted Voice. Best Practice Recommendations for VoIP Deployments Hosted Voice Best Practice Recommendations for VoIP Deployments Thank you for choosing EarthLink! EarthLinks best in class Hosted Voice phone service allows you to deploy phones anywhere with a Broadband

More information

Network Simulation Traffic, Paths and Impairment

Network Simulation Traffic, Paths and Impairment Network Simulation Traffic, Paths and Impairment Summary Network simulation software and hardware appliances can emulate networks and network hardware. Wide Area Network (WAN) emulation, by simulating

More information

IP Telephony Basics. Part of The Technology Overview Series for Small and Medium Businesses

IP Telephony Basics. Part of The Technology Overview Series for Small and Medium Businesses IP Telephony Basics Part of The Technology Overview Series for Small and Medium Businesses What is IP Telephony? IP Telephony uses the Internet Protocol (IP) to transmit voice or FAX traffic over a public

More information

VOIP THE ULTIMATE GUIDE VERSION 1.0. 9/23/2014 onevoiceinc.com

VOIP THE ULTIMATE GUIDE VERSION 1.0. 9/23/2014 onevoiceinc.com VOIP THE ULTIMATE GUIDE VERSION 1.0 9/23/2014 onevoiceinc.com WHAT S IN THIS GUIDE? WHAT IS VOIP REQUIREMENTS OF A VOIP SYSTEM IMPLEMENTING A VOIP SYSTEM METHODS OF VOIP BENEFITS OF VOIP PROBLEMS OF VOIP

More information

10 Key Things Your VoIP Firewall Should Do. When voice joins applications and data on your network

10 Key Things Your VoIP Firewall Should Do. When voice joins applications and data on your network 10 Key Things Your Firewall Should Do When voice joins applications and data on your network Table of Contents Making the Move to 3 10 Key Things 1 Security is More Than Physical 4 2 Priority Means Clarity

More information

5 IPTV MONITORING BEST PRACTICES

5 IPTV MONITORING BEST PRACTICES 5 IPTV MONITORING BEST PRACTICES Chances are you ve seen Internet Protocol TV (IPTV) but didn t know it. Different types of IPTV are popping up in our daily lives ranging from Video-On-Demand to being

More information

Resilient Voice Architecture

Resilient Voice Architecture Resilient Voice Architecture TM for Hosted Business Voice Learn how to ensure a robust, resilient and redundant Hosted PBX network TM with Teledynamic s Resilient Voice Architecture 1 Contents What is

More information

--------- Virtual Office. Network Tests. Revision 1.0. 8x8, Inc. 2125 O'Nel Drive San Jose, CA 95131 Phone: 408.727.1885 Fax: 408.980.

--------- Virtual Office. Network Tests. Revision 1.0. 8x8, Inc. 2125 O'Nel Drive San Jose, CA 95131 Phone: 408.727.1885 Fax: 408.980. --------- Virtual Office Network Tests Revision 1.0 8x8, Inc. 2125 O'Nel Drive San Jose, CA 95131 Phone: 408.727.1885 Fax: 408.980.0432 8x8, Inc. 2125 O'Nel Drive San Jose, CA 95131 Phone: 408.727.1885

More information

NEWT Managed PBX A Secure VoIP Architecture Providing Carrier Grade Service

NEWT Managed PBX A Secure VoIP Architecture Providing Carrier Grade Service NEWT Managed PBX A Secure VoIP Architecture Providing Carrier Grade Service This document describes the benefits of the NEWT Digital PBX solution with respect to features, hardware partners, architecture,

More information

HOSTED VOICE Bring Your Own Bandwidth & Remote Worker. Install and Best Practices Guide

HOSTED VOICE Bring Your Own Bandwidth & Remote Worker. Install and Best Practices Guide HOSTED VOICE Bring Your Own Bandwidth & Remote Worker Install and Best Practices Guide 2 Thank you for choosing EarthLink! EarthLinks' best in class Hosted Voice phone service allows you to deploy phones

More information

Intelligent Infrastructure & Security

Intelligent Infrastructure & Security SYSTIMAX Solutions Intelligent Infrastructure & Security Using an Internet Protocol Architecture for Security Applications White Paper July 2009 www.commscope.com Contents I. Intelligent Building Infrastructure

More information

Lucent VPN Firewall Security in 802.11x Wireless Networks

Lucent VPN Firewall Security in 802.11x Wireless Networks Lucent VPN Firewall Security in 802.11x Wireless Networks Corporate Wireless Deployment is Increasing, But Security is a Major Concern The Lucent Security Products can Secure Your Networks This white paper

More information

Customer Network Assessment

Customer Network Assessment --------- Customer Network Assessment Network Tests Version 2.0 Revision 1.0 8x8, Inc. 2125 O'Nel Drive San Jose, CA 95131 Phone: 408.727.1885 Fax: 408.980.0432 Contents Important Notes for all Tests...

More information

Region 10 Videoconference Network (R10VN)

Region 10 Videoconference Network (R10VN) Region 10 Videoconference Network (R10VN) Network Considerations & Guidelines 1 What Causes A Poor Video Call? There are several factors that can affect a videoconference call. The two biggest culprits

More information

A SENSIBLE GUIDE TO LATENCY MANAGEMENT

A SENSIBLE GUIDE TO LATENCY MANAGEMENT A SENSIBLE GUIDE TO LATENCY MANAGEMENT By Wayne Rash Wayne Rash has been writing technical articles about computers and networking since the mid-1970s. He is a former columnist for Byte Magazine, a former

More information

Network Connection Considerations for Microsoft Response Point 1.0 Service Pack 2

Network Connection Considerations for Microsoft Response Point 1.0 Service Pack 2 Network Connection Considerations for Microsoft Response Point 1.0 Service Pack 2 Updated: February 2009 Microsoft Response Point is a small-business phone solution that is designed to be easy to use and

More information

Is Your Network Ready for VoIP? > White Paper

Is Your Network Ready for VoIP? > White Paper > White Paper Tough Questions, Honest Answers For many years, voice over IP (VoIP) has held the promise of enabling the next generation of voice communications within the enterprise. Unfortunately, its

More information

--------- Virtual Office Network Tests Version 2.0 Revision 1.0 8x8, Inc. 2125 O'Nel Drive San Jose, CA 95131 Phone: 408.727.1885 Fax: 408.980.

--------- Virtual Office Network Tests Version 2.0 Revision 1.0 8x8, Inc. 2125 O'Nel Drive San Jose, CA 95131 Phone: 408.727.1885 Fax: 408.980. --------- Virtual Office Network Tests Version 2.0 Revision 1.0 8x8, Inc. 2125 O'Nel Drive San Jose, CA 95131 Phone: 408.727.1885 Fax: 408.980.0432 Contents Important Notes for all Tests... 3 Tests and

More information

A Brief Overview of VoIP Security. By John McCarron. Voice of Internet Protocol is the next generation telecommunications method.

A Brief Overview of VoIP Security. By John McCarron. Voice of Internet Protocol is the next generation telecommunications method. A Brief Overview of VoIP Security By John McCarron Voice of Internet Protocol is the next generation telecommunications method. It allows to phone calls to be route over a data network thus saving money

More information

Observer Analysis Advantages

Observer Analysis Advantages In-Depth Analysis for Gigabit and 10 Gb Networks For enterprise management, gigabit and 10 Gb Ethernet networks mean high-speed communication, on-demand systems, and improved business functions. For enterprise

More information

DEPLOYING VoIP SECURELY

DEPLOYING VoIP SECURELY DEPLOYING VoIP SECURELY Everyone knows that Voice-over-IP (VoIP) has been experiencing rapid growth. Even still, you might be surprised to learn that: 10% of all voice traffic is now transmitted with VoIP

More information

7 Questions to Ask Video Conferencing Providers

7 Questions to Ask Video Conferencing Providers 7 Questions to Ask Video Conferencing Providers CONTENTS Introduction...3 1. How many people can participate in your video conferences?...3 2. What kind of endpoints does the solution support or require?...4

More information

VOICE OVER IP AND NETWORK CONVERGENCE

VOICE OVER IP AND NETWORK CONVERGENCE POZNAN UNIVE RSITY OF TE CHNOLOGY ACADE MIC JOURNALS No 80 Electrical Engineering 2014 Assaid O. SHAROUN* VOICE OVER IP AND NETWORK CONVERGENCE As the IP network was primarily designed to carry data, it

More information

Unisys Internet Remote Support

Unisys Internet Remote Support white paper Unisys Internet Remote Support Systems & Technology, CMP-based Servers Introduction Remote Support is a method of connecting to remotely located systems for remote administration, real-time

More information

CONNECTING TO LYNC/SKYPE FOR BUSINESS OVER THE INTERNET NETWORK PREP GUIDE

CONNECTING TO LYNC/SKYPE FOR BUSINESS OVER THE INTERNET NETWORK PREP GUIDE CONNECTING TO LYNC/SKYPE FOR BUSINESS OVER THE INTERNET NETWORK PREP GUIDE Engineering Version 1.3 June 3, 2015 Table of Contents Foreword... 3 Current Network... 4 Understanding Usage/Personas... 4 Modeling/Personas...

More information

July, 2006. Figure 1. Intuitive, user-friendly web-based (HTML) interface.

July, 2006. Figure 1. Intuitive, user-friendly web-based (HTML) interface. Smart Switches The Value-Oriented Alternative for Managed Switching White Paper September, 2005 Abstract This White Paper provides a short introduction to Web Smart switches and their importance in a local

More information

Access the Test Here http://myspeed.visualware.com/index.php

Access the Test Here http://myspeed.visualware.com/index.php VoIP Speed Test Why run the test? Running a VoIP speed test is an effective way to gauge whether your Internet connection is suitable to run a hosted telephone system using VoIP technology. A number of

More information

5Get rid of hackers and viruses for

5Get rid of hackers and viruses for Reprint from TechWorld /2007 TEChWoRLd ISSuE 2007 ThEBIG: 5 FIREWaLLS TEChWoRLd ISSuE 2007 ThEBIG: 5 FIREWaLLS TEChWoRLd ISSuE 2007 ThEBIG: 5 FIREWaLLS # # # Load balancing is basically a simple task where

More information

Toll-bypass Long Distance Calling... 1. What Is VOIP?... 2. Immediate Cost Savings... 3. Applications... 3. Business Quality Voice...

Toll-bypass Long Distance Calling... 1. What Is VOIP?... 2. Immediate Cost Savings... 3. Applications... 3. Business Quality Voice... telephony internet access remote access modems Content Toll-bypass Long Distance Calling... 1 What Is VOIP?... 2 That Was Then... This is Now... Immediate Cost Savings... 3 Applications... 3 Office-to-office

More information

How Network Transparency Affects Application Acceleration Deployment

How Network Transparency Affects Application Acceleration Deployment How Network Transparency Affects Application Acceleration Deployment By John Bartlett and Peter Sevcik July 2007 Acceleration deployments should be simple. Vendors have worked hard to make the acceleration

More information

AT&T Connect Video conferencing functional and architectural overview

AT&T Connect Video conferencing functional and architectural overview AT&T Connect Video conferencing functional and architectural overview 2015 AT&T Intellectual Property. All rights reserved. AT&T, the AT&T logo and all other AT&T marks contained herein are trademarks

More information

Five Hosted VoIP Features

Five Hosted VoIP Features Five Hosted VoIP Features WHITEPAPER: three FUNDAMENTALS for consistently good voip call quality www.megapath.com Every week, businesses across the country are converting to Voice over IP (VoIP) communication

More information

Strata CTX IP Telephone Programming Guidelines

Strata CTX IP Telephone Programming Guidelines TOSHIBA OFFICE PRODUCTS GROUP COPIERS FAX TELEPHONES PROJECTORS Technical Support TECHNICAL INFORMATION BULLETIN TTB 03-5 08/14/03 Strata CTX IP Telephone Programming Guidelines This bulletin contains

More information

Receiving the IP packets Decoding of the packets Digital-to-analog conversion which reproduces the original voice stream

Receiving the IP packets Decoding of the packets Digital-to-analog conversion which reproduces the original voice stream Article VoIP Introduction Internet telephony refers to communications services voice, fax, SMS, and/or voice-messaging applications that are transported via the internet, rather than the public switched

More information

ATA: An Analogue Telephone Adapter is used to connect a standard telephone to a high-speed modem to facilitate VoIP and/or calls over the Internet.

ATA: An Analogue Telephone Adapter is used to connect a standard telephone to a high-speed modem to facilitate VoIP and/or calls over the Internet. KEY VOIP TERMS 1 ACD: Automatic Call Distribution is a system used to determine how incoming calls are routed. When the ACD system receives an incoming call it follows user-defined specifications as to

More information

networks Live & On-Demand Video Delivery without Interruption Wireless optimization the unsolved mystery WHITE PAPER

networks Live & On-Demand Video Delivery without Interruption Wireless optimization the unsolved mystery WHITE PAPER Live & On-Demand Video Delivery without Interruption Wireless optimization the unsolved mystery - Improving the way the world connects - WHITE PAPER Live On-Demand Video Streaming without Interruption

More information

Frequently Asked Questions about Integrated Access

Frequently Asked Questions about Integrated Access Frequently Asked Questions about Integrated Access Phone Service How are local, long distance, and international calls defined? Local access transport areas (LATAs) are geographical boundaries set by the

More information

Whitepaper. A Guide to Ensuring Perfect VoIP Calls. www.sevone.com blog.sevone.com info@sevone.com

Whitepaper. A Guide to Ensuring Perfect VoIP Calls. www.sevone.com blog.sevone.com info@sevone.com A Guide to Ensuring Perfect VoIP Calls VoIP service must equal that of landlines in order to be acceptable to both hosts and consumers. The variables that affect VoIP service are numerous and include:

More information

On the Edge: A Hybrid Approach to Cloud Communications for SMBs

On the Edge: A Hybrid Approach to Cloud Communications for SMBs On the Edge: A Hybrid Approach to Cloud Communications for SMBs Table of Contents Introduction....3 The QoS Problem....3 Edge Devices...4 QoS Techniques Multiservice Business Gateways Hybrid Deployments....5

More information

Secure VoIP for optimal business communication

Secure VoIP for optimal business communication White Paper Secure VoIP for optimal business communication Learn how to create a secure environment for real-time audio, video and data communication over IP based networks. Andreas Åsander Manager, Product

More information

Voice Over IP and Firewalls

Voice Over IP and Firewalls Introduction Voice Over IP and Firewalls By Mark Collier Chief Technology Officer SecureLogix Corporation mark.collier@securelogix.com Use of Voice Over IP (VoIP) in enterprises is becoming more and more

More information

When Recognition Matters THE COMPARISON OF PROGRAMS FOR NETWORK MONITORING. www.pecb.com

When Recognition Matters THE COMPARISON OF PROGRAMS FOR NETWORK MONITORING. www.pecb.com When Recognition Matters THE COMPARISON OF PROGRAMS FOR NETWORK MONITORING www.pecb.com Imagine a working environment comprised of a number of switches, routers, some terminals and file servers. Network

More information

MICROSOFT LYNC 101: ENSURE UC EVERYTHING

MICROSOFT LYNC 101: ENSURE UC EVERYTHING MICROSOFT LYNC 101: ENSURE UC EVERYTHING Although the Microsoft Lync platform is somewhat of a newcomer to the unified communications world, it has turned a lot of network heads. Teams with significant

More information

How To: Diagnose Poor VoIP Calls through diagnostics.

How To: Diagnose Poor VoIP Calls through diagnostics. How To: Diagnose Poor VoIP Calls through diagnostics. When problems arise with poor VoIP phone calls, where do you start looking to troubleshoot the issue? This is one of the many challenges of managing

More information

White Paper. The Ten Features Your Web Application Monitoring Software Must Have. Executive Summary

White Paper. The Ten Features Your Web Application Monitoring Software Must Have. Executive Summary White Paper The Ten Features Your Web Application Monitoring Software Must Have Executive Summary It s hard to find an important business application that doesn t have a web-based version available and

More information

Requirements of Voice in an IP Internetwork

Requirements of Voice in an IP Internetwork Requirements of Voice in an IP Internetwork Real-Time Voice in a Best-Effort IP Internetwork This topic lists problems associated with implementation of real-time voice traffic in a best-effort IP internetwork.

More information

Terms VON. VoIP LAN WAN CODEC

Terms VON. VoIP LAN WAN CODEC VON Voice Over the Net. Voice transmitted over the Internet. That is the technical definition. Prescient Worldwide s product, called VON, means Voice Over Network as in ANY network, whether a client s

More information

Lab Testing Summary Report

Lab Testing Summary Report Lab Testing Summary Report September 2007 Report 070914 Product Category: WAN Optimization Vendor Tested: Packeteer, Inc. Product Tested: ishaper 400 Key findings and conclusions: Deep packet inspection

More information

Managing Data, Voice, and Converged IP Networks

Managing Data, Voice, and Converged IP Networks Global Headquarters: 5 Speen Street Framingham, MA 01701 USA P.508.872.8200 F.508.935.4015 www.idc.com I D C E X E C U T I V E B R I E F Managing Data, Voice, and Converged IP Networks April 2005 Adapted

More information

VoIP Solutions Guide Everything You Need to Know

VoIP Solutions Guide Everything You Need to Know VoIP Solutions Guide Everything You Need to Know Simplify, Save, Scale VoIP: The Next Generation Phone Service Ready to Adopt VoIP? 10 Things You Need to Know 1. What are my phone system options? Simplify,

More information

YOUR QUESTIONS ANSWERED. A Practical Guide to VoIP for Small Businesses

YOUR QUESTIONS ANSWERED. A Practical Guide to VoIP for Small Businesses YOUR QUESTIONS ANSWERED A Practical Guide to VoIP for Small Businesses FACING UP TO THE CHALLENGES. 1 What you need to know. Now. Your business is growing. Your customers expect great service. Your employees

More information

VoIP / SIP Planning and Disclosure

VoIP / SIP Planning and Disclosure VoIP / SIP Planning and Disclosure Voice over internet protocol (VoIP) and session initiation protocol (SIP) technologies are the telecommunication industry s leading commodity due to its cost savings

More information

Wireless Network Quality of Service WHITE PAPER

Wireless Network Quality of Service WHITE PAPER Wireless Network Quality of Service WHITE PAPER Executive Summary Most wireless deployments rely on cellular data networks for connectivity, which have bandwidth constraints. The quality of service (QoS)

More information

Voice over IP Networks: Ensuring quality through proactive link management

Voice over IP Networks: Ensuring quality through proactive link management White Paper Voice over IP Networks: Ensuring quality through proactive link management Build Smarter Networks Table of Contents 1. Executive summary... 3 2. Overview of the problem... 3 3. Connectivity

More information

Selecting a Network Recorder for back-in-time analysis to solve intermittent problems and unexpected events

Selecting a Network Recorder for back-in-time analysis to solve intermittent problems and unexpected events Selecting a Network Recorder for back-in-time analysis to solve intermittent problems and unexpected events Often, the only way to get to the root cause of unwelcome or intermittent events that occur on

More information

VLAN for DekTec Network Adapters

VLAN for DekTec Network Adapters Application Note DT-AN-IP-2 VLAN for DekTec Network Adapters 1. Introduction VLAN (Virtual LAN) is a technology to segment a single physical network into multiple independent virtual networks. The VLANs

More information

5. DEPLOYMENT ISSUES Having described the fundamentals of VoIP and underlying IP infrastructure, let s address deployment issues.

5. DEPLOYMENT ISSUES Having described the fundamentals of VoIP and underlying IP infrastructure, let s address deployment issues. 5. DEPLOYMENT ISSUES Having described the fundamentals of VoIP and underlying IP infrastructure, let s address deployment issues. 5.1 LEGACY INTEGRATION In most cases, enterprises own legacy PBX systems,

More information

VoIP 101: An introduction to the basics of Voice over Internet Protocol. How to guide

VoIP 101: An introduction to the basics of Voice over Internet Protocol. How to guide VoIP 101: An introduction to the basics of Voice over Internet Protocol How to guide Introduction You may have heard of VoIP that it s the future of telephone service, and that you can save a lot of money

More information

WHITE PAPER. Control your network: Comprehensive management for demanding wireless networks

WHITE PAPER. Control your network: Comprehensive management for demanding wireless networks WHITE PAPER Control your network: Comprehensive management for demanding wireless networks Executive Summary There are four basic components essential to wireless network management: planning, security,

More information

Voice Quality: The Ultimate Differentiator in VoIP Providers

Voice Quality: The Ultimate Differentiator in VoIP Providers Business Phone Service Quality Voice Quality: The Ultimate Differentiator in VoIP Providers By Robert Conner, CEO of sipvine, Inc. Alternative providers of business phone services are now entrenched in

More information

Business Telephone Systems What Options are Right for My Business?

Business Telephone Systems What Options are Right for My Business? Business Telephone Systems What Options are Right for My Business? A business phone system is the lifeblood of any successful business and whether you are setting up a new office or remote location, or

More information

Multi-layered Security Solutions for VoIP Protection

Multi-layered Security Solutions for VoIP Protection Multi-layered Security Solutions for VoIP Protection Copyright 2005 internet Security Systems, Inc. All rights reserved worldwide Multi-layered Security Solutions for VoIP Protection An ISS Whitepaper

More information

IVCi s IntelliNet SM Network

IVCi s IntelliNet SM Network IVCi s IntelliNet SM Network Technical White Paper Introduction...2 Overview...2 A True ATM Solution End to End...2 The Power of a Switched Network...2 Data Throughput:...3 Improved Security:...3 Class

More information

The Financial Benefits of Using LiveAction Software for Network QoS

The Financial Benefits of Using LiveAction Software for Network QoS White Paper The Financial Benefits of Using LiveAction Software for Network QoS How implementing network quality of service management can provide quantifiable cost savings, improved profitability and

More information

Video Streaming Without Interruption

Video Streaming Without Interruption Video Streaming Without Interruption Adaptive bitrate and content delivery networks: Are they enough to achieve high quality, uninterrupted Internet video streaming? WHITE PAPER Abstract The increasing

More information

MULTIPOINT VIDEO CALLING

MULTIPOINT VIDEO CALLING 1 A Publication of 2 VIDEO CONFERENCING MADE SIMPLE. TELEMERGE S ALL-IN-ONE VIDEO COLLABORATION Everything you need to enable adoption, right here. Request A Demo Learn More THE FOUR PILLARS Telemerge

More information

Reasons to Choose the Juniper ON Enterprise Network

Reasons to Choose the Juniper ON Enterprise Network Reasons to Choose the Juniper ON Enterprise Network Juniper s enterprise access products meet the always-on needs of today s enterprises by delivering solutions that are reliable, simple, and smart. The

More information

The Problem with Faxing over VoIP Channels

The Problem with Faxing over VoIP Channels The Problem with Faxing over VoIP Channels Lower your phone bill! is one of many slogans used today by popular Voice over IP (VoIP) providers. Indeed, you may certainly save money by leveraging an existing

More information

Open Visual Communications Consortium

Open Visual Communications Consortium A Path to Ubiquitous, Any-to-Any Video Communication January 2015 Any Vendor. Any Network. Any Device. Introduction Over the last several years, great strides have been made to improve video communication

More information

Best Practices for Log File Management (Compliance, Security, Troubleshooting)

Best Practices for Log File Management (Compliance, Security, Troubleshooting) Log Management: Best Practices for Security and Compliance The Essentials Series Best Practices for Log File Management (Compliance, Security, Troubleshooting) sponsored by Introduction to Realtime Publishers

More information

An Introduction to VoIP Protocols

An Introduction to VoIP Protocols An Introduction to VoIP Protocols www.netqos.com Voice over IP (VoIP) offers the vision of a converged network carrying multiple types of traffic (voice, video, and data, to name a few). To carry out this

More information

Voice over IP: RTP/RTCP The transport layer

Voice over IP: RTP/RTCP The transport layer Advanced Networking Voice over IP: /RTCP The transport layer Renato Lo Cigno Requirements For Real-Time Transmission Need to emulate conventional telephone system Isochronous output timing same with input

More information

Exhibit n.2: The layers of a hierarchical network

Exhibit n.2: The layers of a hierarchical network 3. Advanced Secure Network Design 3.1 Introduction You already know that routers are probably the most critical equipment piece in today s networking. Without routers, internetwork communication would

More information

Managing Central Monitoring in Distributed Systems

Managing Central Monitoring in Distributed Systems Managing Central Monitoring in Distributed Systems White Paper Author: Daniel Zobel, Documentation and Support at Paessler AG Published: August 2010 PAGE 1 OF 11 Contents Introduction... 3 The probe principle

More information

Fail-Safe IPS Integration with Bypass Technology

Fail-Safe IPS Integration with Bypass Technology Summary Threats that require the installation, redeployment or upgrade of in-line IPS appliances often affect uptime on business critical links. Organizations are demanding solutions that prevent disruptive

More information

Monitoring Service Delivery in an MPLS Environment

Monitoring Service Delivery in an MPLS Environment Monitoring Service Delivery in an MPLS Environment A growing number of enterprises depend on (or are considering) MPLS-based routing to guarantee high-bandwidth capacity for the real-time applications

More information

Network Instruments white paper

Network Instruments white paper Network Instruments white paper MONITORING SERVICE DELIVERY IN AN MPLS ENVIRONMENT A growing number of enterprises depend on (or are considering) MPLS-based routing to guarantee highbandwidth capacity

More information

Voice, Video and Data Convergence > A best-practice approach for transitioning your network infrastructure. White Paper

Voice, Video and Data Convergence > A best-practice approach for transitioning your network infrastructure. White Paper > A best-practice approach for transitioning your network infrastructure White Paper The business benefits of network convergence are clear: fast, dependable, real-time communication, unprecedented information

More information

CIR (down/up) 256k/64k 320k/96k 384k/128k. Throughput allowance 2 GB 4 GB 6 GB. (down/up) in unexpectedly high fees.

CIR (down/up) 256k/64k 320k/96k 384k/128k. Throughput allowance 2 GB 4 GB 6 GB. (down/up) in unexpectedly high fees. Broadband Satellite: Enterprise Class or Cookie Cutter? There are a wide range of broadband satellite services available from a wide variety of network operators. What are the differences between them?

More information

Choosing Ethernet Services

Choosing Ethernet Services Choosing Ethernet Services IS ETHERNET THE RIGHT CHOICE FOR YOUR NETWORK? Business Ethernet Including Ethernet over Copper (EoC) and Ethernet over Digital Signal Cross-connect (EoDSx) Delivers Cost- Effective,

More information

Voice Over IP (VoIP) Denial of Service (DoS)

Voice Over IP (VoIP) Denial of Service (DoS) Introduction Voice Over IP (VoIP) Denial of Service (DoS) By Mark Collier Chief Technology Officer SecureLogix Corporation mark.collier@securelogix.com Denial of Service (DoS) is an issue for any IP network-based

More information

harris.com Is Video Consuming Your Network?

harris.com Is Video Consuming Your Network? harris.com Is Video Consuming Your Network? Maintaining Network Performance in spite of a Data Traffic Deluge What would it cost your company if the enterprise IT network was down for an hour? What if

More information

Clearing the Way for VoIP

Clearing the Way for VoIP Gen2 Ventures White Paper Clearing the Way for VoIP An Alternative to Expensive WAN Upgrades Executive Overview Enterprises have traditionally maintained separate networks for their voice and data traffic.

More information

Voice Over IP Performance Assurance

Voice Over IP Performance Assurance Voice Over IP Performance Assurance Transforming the WAN into a voice-friendly using Exinda WAN OP 2.0 Integrated Performance Assurance Platform Document version 2.0 Voice over IP Performance Assurance

More information

IP Office: Simple, Powerful Communications for Small Business

IP Office: Simple, Powerful Communications for Small Business IP Office: Simple, Powerful Communications for Small Business Successful companies are always looking for new ways to do more with less keeping their business flexible, innovative and competitive without

More information

10 QUESTIONS TO ASK BEFORE YOU BUY PHONE SERVICE FOR YOUR BUSINESS SHARE THIS DOCUMENT 1

10 QUESTIONS TO ASK BEFORE YOU BUY PHONE SERVICE FOR YOUR BUSINESS SHARE THIS DOCUMENT 1 10 QUESTIONS TO ASK BEFORE YOU BUY PHONE SERVICE FOR YOUR BUSINESS SHARE THIS DOCUMENT 1 TELEPHONE SERVICE TELEPHONE SERVICE Telephone service continues to be a critical factor to business success. What

More information

Voice Over IP. MultiFlow 5048. IP Phone # 3071 Subnet # 10.100.24.0 Subnet Mask 255.255.255.0 IP address 10.100.24.171. Telephone.

Voice Over IP. MultiFlow 5048. IP Phone # 3071 Subnet # 10.100.24.0 Subnet Mask 255.255.255.0 IP address 10.100.24.171. Telephone. Anritsu Network Solutions Voice Over IP Application Note MultiFlow 5048 CALL Manager Serv # 10.100.27 255.255.2 IP address 10.100.27.4 OC-48 Link 255 255 25 IP add Introduction Voice communications over

More information

WHATARETHEKEYBENEFITS OFMPLSTECHNOLOGY?

WHATARETHEKEYBENEFITS OFMPLSTECHNOLOGY? WHATARETHEKEYBENEFITS OFMPLSTECHNOLOGY? CHOOSINGTHERIGHTWIDEAREANETWORKSOLUTION FORYOURMULTI-LOCATIONENTERPRISE ExecutiveBrief P a g e 1 Executive Brief What are the Key Benefits of MPLS Technology? Choosing

More information

Edgewater Routers User Guide

Edgewater Routers User Guide Edgewater Routers User Guide For use with 8x8 Service May 2012 Table of Contents EdgeMarc 250w Router Overview.... 3 EdgeMarc 4550-15 Router Overview... 4 Basic Setup of the 250w, 200AE1 and 4550... 5

More information

Virtual Office. Technical Requirements. Version 3.1. Revision 1.0

Virtual Office. Technical Requirements. Version 3.1. Revision 1.0 ---------------------------------------------------------------------------- ------- --------- Virtual Office Technical Requirements Version 3.1 Revision 1.0 Technical Requirements Version 3.0 Revision

More information

Knowledge Is Power: Do what s best for the client.

Knowledge Is Power: Do what s best for the client. Knowledge Is Power: Do what s best for the client. 1. Understanding Voice and Data Differences Even when they are carried on the same network, voice traffic and data traffic cannot be handled the same

More information

Ethernet Switch Evaluation For Streaming Media Multicast Applications

Ethernet Switch Evaluation For Streaming Media Multicast Applications Ethernet Switch Evaluation For Streaming Media Multicast Applications Introduction In addition to many criteria relating to standards compliance, packet forwarding performance, layer 3 and 4 route discovery

More information

Network Monitoring Comparison

Network Monitoring Comparison Network Monitoring Comparison vs Network Monitoring is essential for every network administrator. It determines how effective your IT team is at solving problems or even completely eliminating them. Even

More information

IP Office: Simple, Powerful Communications for Small and Medium Size Businesses

IP Office: Simple, Powerful Communications for Small and Medium Size Businesses IP Office: Simple, Powerful Communications for Small and Medium Size Businesses Successful companies are always looking for new ways to do more with less keeping their business flexible, innovative and

More information

Business Phone Security. Threats to VoIP and What to do about Them

Business Phone Security. Threats to VoIP and What to do about Them Business Phone Security Threats to VoIP and What to do about Them VoIP and Security: What You Need to Know to Keep Your Business Communications Safe Like other Internet-based applications, VoIP services

More information

OrecX Oreka Total Recorder Application Notes

OrecX Oreka Total Recorder Application Notes NetVanta Unified Communications Technical Note OrecX Oreka Total Recorder Application Notes Introduction OrecX (www.orecx.com) Oreka Total Recorder (TR) is a call recording application designed to work

More information

Security and the Mitel Teleworker Solution

Security and the Mitel Teleworker Solution Security and the Mitel Teleworker Solution White Paper July 2007 Copyright Copyright 2007 Mitel Networks Corporation. This document is unpublished and the following notice is affixed to protect Mitel Networks

More information

IP Office Technical Tip

IP Office Technical Tip IP Office Technical Tip Tip no: 195 Release Date: October 26, 2007 Region: GLOBAL Using Packet Capture Software To Verify IP Network VoIP Quality Of Service (QoS) Operation Converged networks can experience

More information