Lync 2013 and Enterprise Networking

Andrew EhrensingUC Solution ArchitectMicrosoft Corporation

Vakhtang AssatrianWW Voice TSPMicrosoft Corporation

EXL334

About this Presentation

Capabilities are subject to change

Packaging and licensing have not yet been determined

Any screen captures or concepts shown are pre-release and for illustration purposes only

DisclaimerThis presentation contains preliminary information that may be changed substantially prior to final commercial release of the software described herein. The information contained in this presentation represents the current view of Microsoft Corporation on the issues discussed as of the date of the 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 presented after the date of the presentation. This presentation is for informational purposes only.

MICROSOFT MAKES NO WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.Microsoft may have patents, patent applications, trademarks, copyrights, or other intellectual property rights covering subject matter in this presentation. Except as expressly provided in any written license agreement from Microsoft, the furnishing of this information does not give you any license to these patents, trademarks, copyrights, or other intellectual property.

All performance statistics are pre-release and subject to change

Agenda

Monitoring and Troubleshooting Lync Media issuesFactors affecting media qualityLync QoE metricsTroubleshooting Lync Media issues

Lync Media over Wi-Fi NetworksIPv6 in Lync 2013Q&A

3

Monitoring and Troubleshooting Lync Media Issues

What Factors Reduce Media Quality?

Audio and video coding

Network performanceLatency (delay and jitter)Packet lossLow and/or variable throughput

Concepts: QoS & QoE

DeviceLow-resolution screenLow processing capability

EnvironmentNoiseLighting

5

Lync 2013 QoE Overview

QoE Metrics: media, network and connection metrics collected by endpoints

User Facing Diagnostics (UFD) Events: Actionable notifications displayed to the user during a call

Network Bars: indicator providing users with information when the network performance is causing media quality issues.

Front End Server

Conferencing Server

Mediation Server

Lync Client Lync Phone Exchange 15

SQL Database

QoE Data Collection

Archiving CDR QoEConferencin

gContent

Queue + Task Manager Queue DB

Unified Contacts

Archival Processing(IM/Conf)

Monitoring Processing (QoE/CDR)

Lync Storage Service

Frontend Server

Replication for HA

Exchange 2013 SQL DB

Lync 2010 MetricsStrong suite of metrics covering

Endpoint specOS, CPU, cores, processor speed, media capture/render device

Call identification (ID)SIP URI, conference bridge URI and media bypass ID

Network performanceTCP/UDP, network connectivity, PLR, IPv4 address, jitter, burstiness, latency

Audio qualityHealer behavior, FEC, sampling rate, RTT, MOS

Video qualityResolution, bit rate, FPS, PLR, freezes, video bandwidth and rate matching

8

Lync 2013 Preview Media Improvements

StereoH.264 Advanced Video Coding (AVC)H.264 Scalable VideoCoding (SVC)Extended platform reachQoE reflects this in extended

video and audio metrics

9

QoE metrics added in Lync 2013 Preview

Video metrics for multiview and single view videoCodec specific performance reportsMetrics available for each multiview video channelAggregated metrics provide general video performancePer channel metrics provide detailed video performance dataLync 2013 will add video metrics for identifying bad/poor video experienceFEC usage for video (including success ratio)

Audio metricsStereo audio usagePer channel signal and noise level metrics for stereoImproved audio healer metrics (FEC usage, packet drop ratio)Extended audio jitter metric to capture variability in jitter

Application Sharing MetricsLatency, burst loss characteristics, Jitter RDP Tile Processing Latency

QoE provides metrics for

TroubleshootingIn Lync 2013 Preview, improved video metrics are aligned to the new video feature setReports will have both audio and video media performance analysisNew QoE will enable administrators to better identify problems with both audio and video

PlanningQoE provides information on

Network performance and problem identificationAudio performance issuesVideo usage and performance issuesQoE data assists in

Network planning (e.g., wired and wireless access requirements)Server and general infrastructure procurement decisions

11

In case if you have SCOM:

QoE monitoring integration: SCOM monitoring agent pulls QoE records from database, and raises alerts if significant failure patterns are detected. Individual failures do not raise alerts.

Reporting Server QoE example

Reporting Server QoE example

Reporting Server QoE example

DEMO

Lync 2013 Monitoring

Lync Media over WiFi Networks

Lync 2013 over Wi-Fi

Wired…

Lync Media over Wi-Fi NetworksLync 2010

Lync media traffic over Wi-Fi is not officially supportedSupport statement is “Best Effort” support

Lync 2013Lync 2013 Preview will add Wi-Fi support statementGoal is to provide general deployment guidance and recommendations for Wi-Fi deploymentWorking with Wireless Local Area Network (WLAN) infrastructure vendors using Lync in their deployments

Wi-Fi only mobile clients (slates, tablets) feature only a

Wi-Fi network connection18

Wi-Fi Problem AreasShared Medium

Interference in 2.4 gigahertz (GHz) (‘noisy‘)Bluetooth, Appliances and cordless phonesOther access points (APs) on the same channel nearby

Limited band selection in 2.4 GHz band

Only three non-overlapping channels

By designWi-Fi standard was designed for none-real time data usageContinuous real-time data flow requirement was not accounted for

5 GHz band Less interferenceWider channel selectionReduced rangeRequires APs and devices to support 5-GHz band

Device Driver issuesDevice (station) background scanning delayRoaming and Transmission Rate (TX) adoption

Wi-Fi Deployment Recommendations for Lync 2013 Preview

Deploy concurrent dual-band APApplicable for enterprise, home, and hotspotMove devices to 5 GHz (if possible)

Consider quality and features of Wireless NICsWi-Fi alliance certificationMultiple antennae support (11n)

2020

Enterprise Wi-Fi Considerations

Understand usage requirements

Nomadic usageMobile usageEndpoints that need Lync over Wi-Fi support

Managed WLAN infrastructure

Central WLAN controllerThin Enterprise-grade APs

High-density AP deployments

Fast inter-AP handover support

Select WLAN infrastructure vendors with voice over Wi-Fi experience21

Lync 2013 Preview Wi-Fi Deployment Guidance

EnterpriseHigh density AP deployment with support 11a/11g, and recently adding 11n supportEnterprise WLAN Controller with thin Enterprise grade APs, dual-band 2.4 and 5 GHzWPA2 Enterprise requires fast AP Handover support Enterprise class notebooks with at least 2x2:2 11n high quality wireless NIC recommendedWireless QoS (WMM) can be implemented

22

Lync 2013 Preview Wi-Fi Deployment Guidance

HomeConsumer grade AP, typically integrated router, hub, APNo handover need. Problems areas are interference, and low signal strengthMinimum recommended for Lync 11g router. Not recommended is 11b Trend: 11n concurrent dual-band router with separate SSID

Hotspot11b and 11g, with only a few 11n implementationsDeployments may not be suitable for Lync media: Throttling; port blocking; quota limitation

23

IPv6 in Lync 2013

IPv4 Address Shortage is RealIPv4 address space

IPv4 allows for ~ 4.3 billion addresses (2 ^32)

Factors increasing rate of IP usage

Increased Internet penetration globally (emerging markets)Mobile DevicesIncrease in number and complexity of Internet services.More importantly, world moves to the cloud.

Date Number of users

% World Population

Dec,1995 16 millions 0.4 %Dec, 1998 147 millions 3.6 %Mar, 2000 304 millions 5.0 %Dec, 2000 361 millions 5.8 %Mar, 2003 608 millions 9.7 %Dec, 2003 719 millions 11.1 %Dec, 2005 1,018 millions 15.7 %Dec, 2007 1,319 millions 20.0 %Dec, 2008 1,574 millions 23.5 %Dec, 2009 1,802 millions 26.6 %Sept, 2010 1,971 millions 28.8 %Dec, 2011 2,267 millions 32.7 %Mar, 2012 2,280 millions 32.7 %

* Information sources: IDC, Internet World Stats

IPv4 – We are out

International Body (IANA) finished last 5 of /8 address block allocation in late January 2011Regional Registries will start hitting bottom around summer 2012.There is no reserve pool – we are really running have run out.

Mitigations to IPv4 DepletionEnterprises and Public Addresses

Most enterprises do not require a lot of public address spaceNetwork Address Translators (NATs) can mitigate scarcity concerns

Carrier-Grade-NATs (CGN)Also known as Large Scale NATs (LSN) aka NAT444sLSN means having neighbourhoods and cities all behind a big NAT

Leads to Lower performanceHundreds of thousands of people all speaking through 1 public IP Address

How NAT64 and LSN Kill IPv4 Fitness

Temporal Stability: Some LSN deployments can make TCP Keep-Alives harder to manage

Address Information: Hundreds of thousands of clients could be behind one or two IPv4 addresses with these technologies.

Peer Availability: Broken in many cases.

Performance: Current indications that both latency and throughput are negatively effected by existing implementations.

IPv6 address spaceIPv4 allows for ~ 4.3 billion addresses (2 ^32)IPv6 allows for 2 ^128 (3.4 undecillion, or 340 trillion trillion trillion)

Transition Technologies

IPv6 and IPv4 are different protocols

IPv4 computers can’t talk to IPv6 computers without a transition device

Transition technologyMost transitions from IPv4 to IPv6 will require transition technologies

IPv4Transition Technolog

yIPv6

Transition Technologies

Intra-Site Automatic Tunnel Addressing Protocol (ISATAP)

Unicast IPv6 connectivity between IPv6/IPv4 hosts across an IPv4 intranet

TeredoUnicast communication across the IPv4 Internet over network address translators

6to4Unicast IPv6 connectivity between IPv6 sites and hosts across the IPv4 Internet

Transition phasesIt all depends on technology selection and network/business environment/requirements

Lync JustificationIPv4 depletion

Enterprises have started planning for IPv6 transition seriously

Mobile devicesExponential growth of Mobile devices, has forced carriers to start issuing IPv6 addresses

Refresh cycleAs large enterprises plan to enable IPV6, new products are expected to be IPv6 capable

Enable IPv6 for Lync 2013

Guiding principles

Comprehensive, yet Simple to deployInline with realityCo-existence with legacy and 3rd partyDesign for the future

Goals

IPv6 CapableIf IPv4 is disabled, Lync would continue to function

Enable transitionEnabling companies during their transition to IPv6Light up Lync 2013 scenarios in an IPv6 enabled environment

Lync 2013 IPv6 fundamentals

SignallingClient-Server signalling traffic does not have a preferenceServer-Server signalling traffic prefers IPv4 over IPv6 preference.

MediaPrefers ipv4 connection over IPv6 connection. Media is very sensitive to non-optimized routingIPv6 routing is not optimized

ServersCMS setting to enable/disable IPv6Media platform honours this setting as well

Client When both types enabled, client signalling has no preference to the type Client media traffic prefers IPv4

Caveats

Features not enabled in pure IPv6 environmentCall Admission ControlE911Media Bypass DevicesMobile Clients

*these capabilities will continue to function in a dual stack / IPv4 environment

Feature summary

IM/PresencePeer to peer sessionsVoiceVideoApplication sharingFile transfer

PSTN/PBXConferenceAudio Audio/videoApplication sharingFile transfer/White board

CMS configurations

Edge ServersAVIM/PresenceData collaboration

Manageability toolsLSCPTopology builderPlanning tool CDR/QoE reports

PlatformMobile and Reach support

Client-Server Interoperability Matrix

Lync 2013IPv4 only Site (Server Infra)

Lync 2013Dual Stack Site (Server Infra)

Lync 2013IPv6 only Site (Server Infra)

Down-level Lync

Lync 2013IPv4 only

Lync 2013Dual Stack

Lync 2013IPv6 only

(Lab trial & certification)

Perimeter componentsEdge Servers

Federation: Interoperability with down level federated deployment (IPv4)Federation requires dual stack to be enabled at the edgeOutside user scenarios; pure IPv6, IPv4 and dual stack

PSTN/PABX Enable Media Bypass wherever possibleAbility to enable IPv6 or IPv4 on the Trunk legGateway and SIP Trunk partner to be engaged

Work in progress for IPv6 certification/compliance PSTN GatewaysSIP TrunkDevices

Edge and Front-end Pool support Matrix

Edge pool

FrontEnd

pool

IPv4 Dual Stack IPv6

IPv4

Dual Stack

IPv6(Lab certification)

Edge pool – Internal/External edge support Matrix

External Edge

Internal

Edge

IPv4 Dual Stack IPv6

IPv4

Dual Stack

IPv6(Lab certification)

Best practices

Lync VersionStrongly recommended 2013Upgrade deployment to Lync 2013 before enabling IPv6If this isn’t practical, co-existence is supported

Pure IPv6 environmentPure IPv6 deployment is functional, however, limit such a configuration to lab environment

Site configurationA site configuration is homogenousThe site configured to either IPv4 or Dual Stacked

Edge configurationFor external edge, when enabling IPv6, ensure it is configured to dual stack Federation between legacy Lync and IPv6 enabled Lync 2013 deployments is supported

Other network considerationsEnsure that static IPv6 addresses are issued As recommended, configure IPSec exemption for these static addressesWork with your network team to ensure IPv6 network is really primetime ready

DEMO

IPv6 in Lync 2013

Session Objectives And Takeaways

Session Objective(s): Overview Lync 2013 Media monitoring and troubleshootingDeployment guidance for Lync over Wi-Fi networksIPv6 and Lync 2013

How to enable real-time media traffic over Wi-Fi networksLync 2013 QoE architecture, metrics, & media troubleshootingIPv6 capabilities; Value prop/Positioning; Planning & Deployment

Related ContentEXL314 – Lync 2013 Architecture Wed 13:45-15:00

Lync Demos – Microsoft Booth

EXL316 – Lync 2013 Meeting Improvements Wed 17:00-18:15EXL321 – Lync 2013 Deployment Thur 8:15-9:30

EXL325 – Lync 2013 Voice Improvements Thur 15:30-16:45

EXL334 – Lync 2013 Enterprise Networking Fri13:45-15:00

EXL231 – Demystifying Integration of Lync to PBX Fri8:15-9:30

EXL224 – Lync 2013 Customer Panel Q&A Thur 13:45-15:00

Track Resources

Download and evaluate Exchange 2013 Preview

Download and evaluate Lync 2013 Preview

Get a Lync Business Value Assessment

Get an Exchange and Lync Technical Briefing

See and test drive Exchange and Lync in our Customer Immersion Experience Centers

© 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.