NetIQ Corporation1100 Perimeter Park Drive

Suite 104Morrisville, NC 27560-9119

(919) 469-0997

http://www.netiq.com/voip/

NetIQ Corporation1100 Perimeter Park Drive

Suite 104Morrisville, NC 27560-9119

(919) 469-0997

http://www.netiq.com/voip/

VoIP Implementation & Management

Challenges of VoIPChallenges of VoIP

VoIP has demanding network characteristics Users expect toll-quality calls Strict constraints on delay, jitter, packet loss

Voice is as “business critical” as it gets Users expect 99.999% uptime

Voice and data skills are hard to find together

VoIP has demanding network characteristics Users expect toll-quality calls Strict constraints on delay, jitter, packet loss

Voice is as “business critical” as it gets Users expect 99.999% uptime

Voice and data skills are hard to find together

“85% of today's router-based data networks are not ready for successful voice deployment.”

Gartner Group, March 27, 2001

The Hard ProblemsThe Hard Problems

Network designed for web and email VoIP has real time requirements “Five Nines” of reliability: 99.999% uptime

Data network tuning How do VoIP and other business applications co-exist

well?

Network designed for web and email VoIP has real time requirements “Five Nines” of reliability: 99.999% uptime

Data network tuning How do VoIP and other business applications co-exist

well?

Uptime Downtime

Phone 99.999%

5 minutes/year

E-mail 99.8% 18 hours/year

Web 99.0% 88 hours/year

Steps in Implementing VoIPSteps in Implementing VoIP

Assess network readiness for

voice, audio, video

Real-time monitoring of call quality, server

health, & network performance

Test and tune networks and

equipment

Isolate faults and determine the

cause of problems

Assess - Test - Monitor - DiagnoseAssess - Test - Monitor - Diagnose

Assessing VoIP ReadinessAssessing VoIP Readiness

Most VoIP deployments start with hit-or-miss pilots Expensive and time consuming Qualitative – “How did the calls sound to you?

Is it reliable?” Deployments are long, tedious, and disruptive

An alternative: Evaluate the data network’s ability to support VoIP

before deploying or even buying VoIP equipment

Most VoIP deployments start with hit-or-miss pilots Expensive and time consuming Qualitative – “How did the calls sound to you?

Is it reliable?” Deployments are long, tedious, and disruptive

An alternative: Evaluate the data network’s ability to support VoIP

before deploying or even buying VoIP equipment

Key Aspects of an AssessmentKey Aspects of an Assessment Configuration Assessment

Is device configuration capable of VoIP? Utilization Assessment

Bandwidth Is there enough bandwidth available for the calls I need?

Device CPU usage Is the CPU usage too high?

Should be done before deploying or even buying VoIP equipment Is the call quality acceptable? Measure network statistics that impact VoIP

Jitter, one-way delay, lost packets Determine how many VoIP channels a network can support Measure the effect of VoIP on other applications

Configuration Assessment Is device configuration capable of VoIP?

Utilization Assessment Bandwidth

Is there enough bandwidth available for the calls I need? Device CPU usage

Is the CPU usage too high? Should be done before deploying or even buying VoIP

equipment Is the call quality acceptable? Measure network statistics that impact VoIP

Jitter, one-way delay, lost packets Determine how many VoIP channels a network can support Measure the effect of VoIP on other applications

NetIQ’s Vivinet AssessorNetIQ’s Vivinet Assessor

Discovers and reports network device configuration

Assesses VoIP readiness of routers, switches and links

Emulates VoIP traffic to predict call quality

Models VoIP bandwidth on WAN links

Discovers and reports network device configuration

Assesses VoIP readiness of routers, switches and links

Emulates VoIP traffic to predict call quality

Models VoIP bandwidth on WAN links

RaleighRaleigh

HoustonHouston

PortlandPortland

San JoseSan Jose

IP IP WANWAN

Vivinet Vivinet AssessorAssessor

Vivinet Assessor BenefitsVivinet Assessor Benefits Identifies network

devices and links that support VoIP

Measures call quality by time and location

Helps make CODEC tradeoffs between quality and bandwidth

Measures effectiveness of QoS

Creates polished assessment reports…

Identifies network devices and links that support VoIP

Measures call quality by time and location

Helps make CODEC tradeoffs between quality and bandwidth

Measures effectiveness of QoS

Creates polished assessment reports…

Assessment Reports Assessment Reports provide a “Go/No Go” provide a “Go/No Go”

recommendationrecommendation

…all BEFORE deploying the first VoIP phone…all BEFORE deploying the first VoIP phone

Failed the Assessment?Failed the Assessment?

More bandwidth Different network architecture Apply Quality of Service (QoS) Different equipment Improve tuning

More bandwidth Different network architecture Apply Quality of Service (QoS) Different equipment Improve tuning

Tuning VoIP Traffic for the Data NetworkTuning VoIP Traffic for the Data Network

Emulate VoIP traffic repeatably Quality of Service: DiffServ/ToS, RSVP, MPLS, … What if: see effects of changing VoIP characteristics

Try different codecs, silence suppression Adjust delay between packets, adjust jitter buffer

sizes

Look at effect across many locations What happens as peak call volume is reached? What happens to the other applications?

Emulate VoIP traffic repeatably Quality of Service: DiffServ/ToS, RSVP, MPLS, … What if: see effects of changing VoIP characteristics

Try different codecs, silence suppression Adjust delay between packets, adjust jitter buffer

sizes

Look at effect across many locations What happens as peak call volume is reached? What happens to the other applications?

Will Your Network Changes Work?Will Your Network Changes Work?

How do you achieve optimal VoIP quality and reliability?

Will your changes improve network performance?

How effective is QoS? Will VoIP affect other

networked applications?

How do you achieve optimal VoIP quality and reliability?

Will your changes improve network performance?

How effective is QoS? Will VoIP affect other

networked applications?

NetIQ’s ChariotNetIQ’s Chariot

Measures end-to-end, network performance from the application layer

Evaluates the impact of network changes Emulates both VoIP and non-VoIP traffic, in

the lab Tests VoIP-enabled network equipment Evaluates the effectiveness of QoS and

assists in QoS tuning Tests the capacity of the network

Measures end-to-end, network performance from the application layer

Evaluates the impact of network changes Emulates both VoIP and non-VoIP traffic, in

the lab Tests VoIP-enabled network equipment Evaluates the effectiveness of QoS and

assists in QoS tuning Tests the capacity of the network

Chariot BenefitsChariot Benefits

Evaluate potential resolutions to problems uncovered by Vivinet Assessor

Validate proposed network and equipment changes

Understand performance impact of other network elements, such as VPNs and firewalls on VoIP traffic

Verify that prioritization techniques work as planned using both VoIP and non-VoIP traffic

Evaluate potential resolutions to problems uncovered by Vivinet Assessor

Validate proposed network and equipment changes

Understand performance impact of other network elements, such as VPNs and firewalls on VoIP traffic

Verify that prioritization techniques work as planned using both VoIP and non-VoIP traffic

Can you effectively troubleshoot?Can you effectively troubleshoot?

Root causes of call quality issues are often elusive

Skills, expertise and tools needed to solve problems may not be available

Troubleshooting is costly, both in time and money

Inability to identify and fix problems stalls VoIP deployment

Root causes of call quality issues are often elusive

Skills, expertise and tools needed to solve problems may not be available

Troubleshooting is costly, both in time and money

Inability to identify and fix problems stalls VoIP deployment

NetIQ’s Vivinet DiagnosticsNetIQ’s Vivinet Diagnostics

Requires just two phone numbers or IP addresses

Analyzes the network path between phones Gathers detailed performance data about the

routers, switches, links and voice gateways Identifies causes of specific call quality

problems using built-in Knowledge Engine Lists and prioritizes problems

Requires just two phone numbers or IP addresses

Analyzes the network path between phones Gathers detailed performance data about the

routers, switches, links and voice gateways Identifies causes of specific call quality

problems using built-in Knowledge Engine Lists and prioritizes problems

Vivinet Diagnostics BenefitsVivinet Diagnostics Benefits

Cuts down on time spent resolving voice quality issues

Reduces skills needed for troubleshooting

Minimizes tools required

Enables troubleshooting in both pre- and post-deployment environments

Requires minimal configuration

Cuts down on time spent resolving voice quality issues

Reduces skills needed for troubleshooting

Minimizes tools required

Enables troubleshooting in both pre- and post-deployment environments

Requires minimal configuration

Can You Meet Voice and Video Availability and Quality Needs?Can You Meet Voice and Video Availability and Quality Needs?

Will you be able to meet high reliability expectations?

Can you ensure your IP telephony systems and video networks deliver the highest quality for users?

Can you maintain required service levels? Will your management be proactive or

reactive?

Will you be able to meet high reliability expectations?

Can you ensure your IP telephony systems and video networks deliver the highest quality for users?

Can you maintain required service levels? Will your management be proactive or

reactive?

VoIP ManagementVoIP Management

Assuming you already manage routers and switches, focus on Call Quality Availability

Call servers Gateways Phones Unified messaging Video servers

Assuming you already manage routers and switches, focus on Call Quality Availability

Call servers Gateways Phones Unified messaging Video servers

Monitoring a VoIP SystemMonitoring a VoIP System

Real-time monitoring and management of IP telephony systems and VoIP networks

Robust alert management and notification Forward alerts via email, pager, SNMP Forward alerts to systems management console Automatic alert escalation

Automate problem management Initiate corrective actions based on threshold

conditions

Real-time monitoring and management of IP telephony systems and VoIP networks

Robust alert management and notification Forward alerts via email, pager, SNMP Forward alerts to systems management console Automatic alert escalation

Automate problem management Initiate corrective actions based on threshold

conditions

Monitoring Call QualityMonitoring Call Quality

Monitor VoIP Call Quality Active: Drive VoIP traffic between key points in the network Passive: Examine Call Detail records Report on call quality: MOS, one-way delay, jitter, & packet

loss Troubleshoot VoIP quality issues without impacting servers

Identify Call Quality Issues Before Users Complain Diagnose problems and pinpoint devices that are problematic Measure network performance factors that impact VoIP Alerts on impending performance issues

Monitor VoIP Call Quality Active: Drive VoIP traffic between key points in the network Passive: Examine Call Detail records Report on call quality: MOS, one-way delay, jitter, & packet

loss Troubleshoot VoIP quality issues without impacting servers

Identify Call Quality Issues Before Users Complain Diagnose problems and pinpoint devices that are problematic Measure network performance factors that impact VoIP Alerts on impending performance issues

NetIQ’s Vivinet ManagerNetIQ’s Vivinet Manager

Easy-to-use web-based console Integrates with your current management

system Automates operations and monitoring policies Automated problem management includes

sophisticated alerting and auto-resolution capabilities

Powerful out-of-the-box reporting of call quality, usage trends, overall performance and capacity planning

Easy-to-use web-based console Integrates with your current management

system Automates operations and monitoring policies Automated problem management includes

sophisticated alerting and auto-resolution capabilities

Powerful out-of-the-box reporting of call quality, usage trends, overall performance and capacity planning

NetIQ’s Vivinet Manager BenefitsNetIQ’s Vivinet Manager Benefits Simplifies voice and video

management Maximizes performance

and uptime Lowers support costs Rapidly identify critical

problems Manage from anywhere Stay on top of your voice

and video environment

Simplifies voice and video management

Maximizes performance and uptime

Lowers support costs Rapidly identify critical

problems Manage from anywhere Stay on top of your voice

and video environment

For More InformationFor More Information

Visit http://www.netiq.com/voip/ White papers – http://www.netiq.com/products/vm/whitepapers.asp

Checklist of VoIP Network Design Tips A Handbook for Successful VoIP Deployment:

Network Testing, QoS, and More Doing a VoIP Assessment with Vivinet Assessor What You Need to Know Before You Deploy VoIP

Visit http://www.netiq.com/voip/ White papers – http://www.netiq.com/products/vm/whitepapers.asp

Checklist of VoIP Network Design Tips A Handbook for Successful VoIP Deployment:

Network Testing, QoS, and More Doing a VoIP Assessment with Vivinet Assessor What You Need to Know Before You Deploy VoIP