NETW306-R Juratovic

So you want to run Lync 2013 over a Wi-Fi network?

Lync 2014 2014 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.2/20/20141Sasa Juratovic - Senior Program Manager (Microsoft Corporation)Pascal Menezes - Principal Program Manager (Microsoft Corporation)David Frost - Area Manager (Ixia)So you want to run Lync 2013 over a Wi-Fi network?NETW306-RLync Conference 2013 2013 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.2/20/20142Why do we care about Wi-Fi?Challenges with Real Time Media & Wi-FiCommon Usage ScenariosWi-Fi Deployment Guidance for Real Time MediaLync over Wi-Fi Multi-Tier Strategy MSIT Lessons LearnedWi-Fi Network AssessmentQ&ASession Overview2/20/2014 2012 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.3Microsoft Consumer Channels and Central Marketing Group

Wi-Fi and WiGig Chipset Shipments surpass 2B in 2013Source: ABI Research, November 2013Tri-band 60 GHz 11ad/WiGig, 11ac (5 GHz) and 11n (2.4 GHz)Dual-band 11n (2.4 GHz) + 11ac (5GHz)Single-band 11n (2.4 GHz) Dual-band 11n (2.4 and 5 GHz)Why do we care about Wi-Fi?Wi-Fi and WiGig Chipset Shipments

Proprietary | Wi-Fi Alliance

Source: ABI Research, November 2013Why do we care about Wi-Fi?Wi-Fi Devices Shipments

Proprietary | Wi-Fi AllianceUsers are demanding and expecting similar rich experience within the enterprise, public venues and at home (comparable to wired devices)BYOD improves productivity, collaboration and cost managementWi-Fi by default, wired when necessary (in many cases Wi-Fi only)Network managers tasked to plan for (data/voice/video) convergenceCustomers are pushing towards greater media over mobile scenariosCustomers are looking to optimize cellular minute and data plansWi-Fi is a key technology to enable capacity and scalability for mobile devices, at work and hotspotsWi-Fi has become a mainstream wireless technologyWhy do we care about Wi-Fi?Trends2/20/2014 2012 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.6Microsoft Consumer Channels and Central Marketing GroupChallenges with Real Time Media & Wi-FiRunning Lync 2013 over Wi-FiData over Wi-FiDevices - Desktops, laptop, slates, mobile smart phonesModalities - IM, presence, web conferencing, calendaringReal Time Media over Wi-Fi: FixedAdditional modalities (includes Lync Data over Wi-Fi) - Voice mail, video conferencing, telephony, audio conferencing Nomadic but stationary use of Lync servicesReal Time Media over Wi-Fi: MobileModalities same as with Lync Real Time Media over Wi-Fi FixedOriginate, consume and terminate Lync services while on the moveReal Time MediaCharacteristics Streaming vs. Real Time MediaStreaming applications like YouTube, Netflix, etc can utilize large receive side buffers in order smooth out network delaysReal Time Media is interactive and requires a high performance network that can sustain continuous up/down stream traffic, with low latency, jitter and packet lossImpact to Human InteractionHuman communication starts to get negatively impacted with latency of more than 250 msec (one way, mouth-to-ear latency)Bursty jitter or packet loss over a certain threshold cannot be recovered, and leads to glitches in the audio and video streamAudio glitches are very disruptive and lead to a poor user experienceReal Time MediaGood Network Traffic CharacteristicsConsistent flow of data packets Low delay, jitter and packet lossRandom loss can be compensated sequential loss is problematicIncrease in delay, jitter and/or packet loss can have notable impact on end user experienceMore bandwidth demand is coming with HD video (1.5+ Mbps each way per stream)Real Time MediaNetwork RequirementsBandwidth requirements (1)Audio 50 Kbps to 220 Kbps per stream (incl. IP header and FEC overhead)Video 250 Kbps to 4 Mbps per stream (multiple concurrent video streams are possible for multiparty video conferencing)Jitter Desired jitter less than 20 msecEnd-to End Network LatencyDesired less than 100 msec (one way)Acceptable less than 200 msec (one way)Depends on geographyPacket LossDesired 0%, acceptable Windows Settings -> Policy-based QoSGpudate.exe /forceOn multi-adapter and/or Workgroup Mode computer set Do not use NLA=1 under HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\Tcpip\QoSFor Edge on Windows Server 2008 R2 or Windows Server 2012Configure internal side and destination port

Client Traffic TypeDSCPSource IPDestination IPProtocolsSource port rangeDestination port rangeAudio46AnyAnyTCP/UDP49152:57500AnyVideo34AnyAnyTCP/UDP57501:65535AnyApp Sharing24AnyAnyTCP/UDP40803:49151AnyClient Traffic TypeDSCPSource IPDestination IPProtocolsSource port rangeDestination port rangeAudio46AnyAnyTCP/UDPAny49152:57500Video34AnyAnyTCP/UDPAny57501:65535App Sharing24AnyAnyTCP/UDPAny40803:49151Conferencing, Application and Mediation ServersEdge Servers32Lync QoS GuidanceConfigure Port Ranges for Lync desktop clientGet-CsConferencingConfigurationClientMediaPortRangeEnabled : FalseClientAudioPort : 5350ClientAudioPortRange : 40ClientVideoPort : 5350ClientVideoPortRange : 40ClientAppSharingPort : 5350ClientAppSharingPortRange : 40ClientFileTransferPort : 5350ClientTransferPortRange : 40

Recommended port values for Lync clientsClient Traffic Type Port Start Port Range Audio5002020Video5800020Application sharing4200020File transfer4202020Set-CsConferencingConfiguration-ClientMediaPortRangeEnabled $True-ClientAudioPort 50020-ClientAudioPortRange 20-ClientVideoPort 58000-ClientVideoPortRange 20-ClientAppSharingPort 42000-ClientAppSharingPortRange 20-ClientFileTransferPort 42020-ClientFileTransferPortRange 20 33Lync QoS GuidanceConfigure a Quality of Service Policy for Lync desktop clientFor Lync client on Windows 7/8In Group Policy Editor go to Computer Configuration -> Windows Settings -> Policy-based QoSGpudate.exe /forceOn multi-adapter and/or Workgroup Mode computer set Do not use NLA=1 under HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\Tcpip\QoS

Client Traffic TypeDSCPSource IPDestination IPProtocolsSource port rangeDestination port rangeAudio46AnyAnyTCP/UDP50020:50039AnyVideo34AnyAnyTCP/UDP58000:58019AnyApp Sharing24AnyAnyTCP/UDP42000:42019AnyFile Transfer14AnyAnyTCP/UDP42020:42039Any34Lync over Wi-FiMulti-Tier StrategyLync Wi-Fi AP Qualification ProgramAP testing to ensure proper interoperability and performanceIxia, industry leader in Test & Measurement, has been selected as test houseEach vendor publishes test results and deployment guidance for Lync over Wi-FiQualified vendor devices published @ UCOIPVendorQualified DeviceFirmware Version TestedAruba Networks, Inc.Mobility Controllers and AP-104/105/134/135 Access PointsAOS 6.1.3.2 and higherCisco SystemsAIR-CT5508-K9 and AIR-CAP 3602E-A-K9, with SW 7.5.102.2V01Dell, Inc.PowerConnect W-Series Mobility Controllers and W-AP104/105/134/135 Access PointsAOS 6.1.3.2 and higherHPMSM720/MSM760/MSM765 zl/MSM775 zl Wireless LAN Controllers and MSM430/MSM460/MSM466/MSM466-R and HP 425 Access Points6.0.1.1 and higherJuniper NetworksWireless LAN Controllers, WLA532 Wireless LAN APsMSS 8.0 and higherMotorola SolutionsNX 9510 (controller) and AP-7131WiNG 5.5.0.0As of 30th Jan 2014Lync Wi-Fi Device Qualification ProgramAbout to be released A program that will test Lync Real Time Media over Wi-Fi for nomadic and mobile scenariosIxia has been selected as test houseEach vendor will publish test results and deployment guidance for Lync over Wi-FiStandards supporting multimedia over Wi-FiNo single standard or certification encompasses the needs of real-time mediaMicrosoft is championing efforts in the Wi-Fi Alliance to advance understanding and support for certification of mobile and infrastructure devices for real-time mediaPriorities are toImprove Wi-Fi roaming and application performanceAddress the needs of enterprise, home and public venuesCatalyze participation and commitment from device vendorsMSIT Lessons LearnedFour buildings at Microsoft (B30, B31, B5 and B6) were upgraded to support Real Time MediaEach building had about 600 Lync usersA total of 182 802.11n Aruba APs were deployed in B30 and B31A total of 70 802.11n Aruba APs were deployed in B5 and B6Based on great results from trials, MSIT upgraded entire global Wi-Fi infrastructure to 802.11n7% bad wireless calls before upgrade3% bad wireless calls after upgradeGeneralized Lync over Wi-Fi Deployment Guidance document published @ http://www.microsoft.com/en-us/download/details.aspx?id=36494Important lessons learned for enterprise deploymentsLync and Aruba Wi-Fi FY2013 Trial40FY2013 Wi-Fi Lessons LearnedInfrastructure Design and Tuning for UC MediaDensity vs. PerformanceTX rates, Transmit power, and Load BalancingBYOD and Client issuesThe unmanaged ClientsLow cost/cheap Client devicesClient DriversMobility Client Roaming issues affect UC Quality and performanceClient scanning41Wi-Fi Network AssessmentLync and Wi-FiWhy does Wi-Fi matter for Lync?Two natural network bottlenecks: WAN and Wi-Fi accessMobility & BYOD are driving Lync over Wi-Fi usage growthWhy is Wi-Fi typically a bottleneck?Designed for signal strength, not client experience at scaleWi-Fi network instability over timePoor application coverage due to installation & client device behaviors

Most IT customers know they have Wi-Fi issues, but they do not know how to identify, fix and validate them!43(Lync over Wi-Fi) != (Lync over Ethernet)BehaviorEthernetWi-FiImpact on LyncFull wire rateYesNoNetworks are often under designed for intended Lync loadPHY data speedsFixed, PtPFull DuplexVariable, Shared, Half DuplexOne slow client can ruin Lync experience for all users on the APClient integrationSimpleComplexHighly variable client device implementations lead to highly variable Lync experienceMobilityStationaryMobileLync sessions often deteriorate when clients are distant from the AP or when they roamInstallationForgivingCriticalVariable Lync experience depending upon physical locationWi-Fi networks rarely fail outright they are mostly operational, but not optimal

Most difficult situation to detect and fix44Difference between RF and Application CoverageMain questions:How many APs to cover the area with RF? Where to put the APs for better signal?

Signal Strength

Lync Application PerformanceGood signal strength does not guarantee good Lync performance45Building World-Class Lync over Wi-Fi NetworkComponentsLync Client AppClient DevicesWi-Fi access pointsWi-Fi ControllerWireline InfrastructureWAN AccessData CenterLync Server

Wi-Fi Controller

Wireline Infrastructure

Access Points

Clients

Data Center

Access RouterWANWi-Fi AssessmentWAN Assessment46Wi-Fi Assessment Methodology 47Wi-Fi Assessment Steps

48

Final ReportAssessment ReportScalabilityStabilityCoverageTable of ContentsSummary of engagementOverall conclusions & recommendationsScalability resultsSites 1-4 analysis: summary, coverage, stability49Next StepsProblemUsing Lync Without Network ChangesFollow on Services for Network UpgradesScalabilityLimit scale or servicesReconfigure networkUpgrade network capacityStabilityMust addressReconfigure networkUpgrade networkReconfigure clientsChange clientsCoverageLimit usable coverageUpgrade networkReconfigure clientsChange clientsPartners can offer these as value added services; Ixia can be your partner.50Wi-Fi Assessment Engagement ProcessStepSupporting Material & ActionsContact IxiaEmail [email protected] to get startedPosition Wi-Fi Assessment to customerSales presentation & product brochuresIxia can assist with all aspects of Wi-Fi Assessment.Discovery Understand what network environment existsAsking the right questionsModeling

Determine Lync utilization per APReporting

Analyze factors that affect quality, and produce a full report with recommendationsTraffic Simulation

Traffic simulator apply real trafficCall to ActionIf you are running an AP that is not on Wi-Fi qualified list (*), ask your vendor to get in touch with Ixia ([email protected]) to qualifyTalk to your vendor to get in touch with Ixia ([email protected]) to qualify devices your company is using(*) Look under Networking @ Infrastructure qualified for Microsoft Lync

Thank You 2012 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.2/20/201453Lync 2014 2014 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.2/20/201454

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Lync 2014 2014 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.2/20/201458 2014 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

2/20/2014 11:06 AM59 2010 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.