NetIQ Corporation 1100 Perimeter Park Drive Suite 104 Morrisville, NC 27560-9119 (919) 469-0997 http://www.netiq.com/vo

1. VoIP Implementation & Management NetIQ Corporation1100 Perimeter Park DriveSuite 104Morrisville, NC 27560-9119(919) 469-0997 http://www.netiq.com/voip/

2. Challenges 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 “85% of today's router-based data networks are not ready for successful voice deployment.” Gartner Group, March 27, 2001

3. The 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?

4. Steps in Implementing VoIP Assess - Test - Monitor - Diagnose Test and tune networks and equipment Isolate faults and determine the cause of problems Assess network readiness for voice, audio, video Real-time monitoring of call quality, server health, & network performance

5. Assessing 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

6. Key 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

7. NetIQ’s Vivinet Assessor Portland San Jose Raleigh IP WAN Vivinet Assessor Houston • 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

8. Vivinet 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… Assessment Reports provide a “Go/No Go” recommendation …all BEFORE deploying the first VoIP phone

9. Failed the Assessment? • More bandwidth • Different network architecture • Apply Quality of Service (QoS) • Different equipment • Improve tuning

10. Tuning 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?

11. 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?

12. NetIQ’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

13. Chariot 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

14. 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

15. NetIQ’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

16. Vivinet 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

17. 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?

18. VoIP Management • Assuming you already manage routers and switches, focus on • Call Quality • Availability • Call servers • Gateways • Phones • Unified messaging • Video servers

19. Monitoring 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

20. Monitoring 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

21. NetIQ’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

22. NetIQ’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

23. For 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