HDX Tech Talk - citrix- · PDF fileHDX Tech Talk Optimise streaming ... [er$buﬀer$in$Citrix$Receiver$3.0$for$smoother$ audio$$ when$network$latency$is$variable$ ... terminal device

October 2012

HDX Tech Talk Optimise streaming video, softphones, Microsoft Lync and more with XenDesktop

Derek Thorslund, Director of Product Management

High Definition Experience

HDX MediaStream Video and audio playback, any format, on any device

HDX Broadcast ICA and RDP protocol support for access from any device, anywhere

HDX SmartAccess Simplified secure access

HDX Plug-‐n-‐Play Access to local resources and peripherals such as printers, monitors and USB devices

HDX RichGraphics 2D and 3D graphics incl. AdapLve Display, HDX 3D, HDX 3D Pro and RemoteFX

HDX WAN OpLmizaLon Performance and bandwidth opLmizaLons via Citrix Branch Repeater

HDX AdapLve OrchestraLon Best user experience based on server, network connecLon and device

HDX RealTime Voice and video for real-‐Lme collaboraLon / unified communicaLons

Flash Windows Media

Silverlight QuickTime

HDX MediaStream

HTML 5 Video

Citrix Receiver support for HDX MediaStream

HDX MediaStream and Adaptive Orchestration

1.  Generic approach: Server-side rendering (Adaptive Display)

Video frames & audio

Native media streams

2.  Optimization: Client-side rendering (multimedia redirection)

Server-rendered multimedia Adaptive Display

• Video region (frame) detection

• Auto-adjusts image quality and frame rate self-to changing network conditions

• Crystal clear audio even under high server load or on challenging networks

• Zero configuration in most cases

XenDesktop 5.5 XenApp 6.5 HF2

• Objective: Offload server CPU by rendering Flash content on the user device for majority of web sites (>90%)

• Significant server scalability benefit and excellent user experience

Flash Redirection

Citrix Confidential - Do Not Distribute

Flash Redirection Architecture

XenDesktop / XenApp

Internet Explorer

Client Device

Citrix Receiver (Windows/

Linux)

Flash Playe

r

ICA

Thinwire virtual channel

HDX Flash virtual

channel

ActiveX

HDX Flash

Service

Adobe Flash player runs on the user’s device

• Uncompromised audio and video quality (incl. High Def)

• IE is hosted but Adobe Flash player runs on user device

• Utilizes client GPU/CPU for decoding (e.g. H.264 decode)

• Automatic fallback to server-side rendering in cases where it still provides best experience (Adaptive Orchestration)

Flash Redirection


HDX RealTime Softphones and Unified Communications

HDX RealTime: Complementary approaches

Generic: Media-over-ICA •  Unmodified softphone ᵒ  Very broad app compatibility J

•  Audio-video traffic over ICA •  Citrix audio/video codecs, echo

cancellation, jitter buffering, etc., to maximize audio-video quality

•  Broad device support ᵒ  Windows, Linux, Mac, ThinOS and

Android (audio only)

Optimized: Peer-to-peer •  Softphone modified or hooked to

offload media processing to the user device ᵒ  Maximum server scalability J

•  Real-time audio-video traffic bypasses Citrix server ᵒ  Zero degradation J

(no “hairpinning”)

•  Facilitated by HDX RealTime SDK, available to Citrix Ready partners

HDX RealTime: Complementary approaches

Generic: Media-over-ICA

Optimized: Peer-to-peer

User Interface

Business Logic

Media Engine

unmodified soYphone architecture

User Interface

Business Logic

Media Engine

user device

server

modified soYphone architecture

virtual channel

Generic HDX RealTime Media-over-ICA

HDX RealTime VoIP-over-ICA Recent enhancements (XenDesktop 5.5 VDA and XenApp 6.5)

ᵒ  Client ji[er buffer in Citrix Receiver 3.0 for smoother audio when network latency is variable

ᵒ  Low latency audio path ᵒ  Improved echo cancellaLon

ᵒ  Audio plug-‐n-‐play and audio device rouLng ᵒ  MulL-‐stream ICA for full QoS support plus UDP/RTP for audio on XenDesktop (VDI) with packet tagging (DSCP and WMM)

Multi-Stream ICA for true network QoS

Citrix Receiver

for Windows

XenDesktop Windows 7

or XenApp

WS08 R2*

HTTP Server

Router

ICA Real Time

HTTP HTTP

ICA InteracLve

ICA Background

ICA Bulk

ICA Real Time

ICA InteracLve

ICA Background

ICA Bulk

ICA UDP/RTP Audio * ICA UDP Audio *

* UDP/RTP Audio iniLally only in VDI FlexCast model (XenDesktop 5.5)

High defini*on audio Speech-‐op*mized audio

96 kbps per channel XenDesktop default

16-‐32 kbps per channel Recommended for VoIP

Audio settings

HDX RealTime support in Branch Repeater Enhancements introduced in BR 6.0.1 (introduced Q3 2011)

• More flexible QoS support ᵒ More priority levels

ᵒ “Zero configuration” QoS for all traffic

ᵒ Multiple TCP streams over single port (1494)

ᵒ Application discovery and classification

• Rate control and protection capabilities

XenDesktop VDI & XenApp

Collaborate in real-‐Lme to improve producLvity Webcam video compression

• Excellent bandwidth efficiency and latency tolerance

•  Support for almost all webcams (any that support DirectShow capture filters)

•  Included in Citrix Receiver for Windows, Mac, Linux

• Broad app compaLbility including MicrosoY Lync / Office Communicator, GoToMeeLng HDFaces, Adobe Connect, Cisco WebEx*, Lotus SameLme*, MicrosoY Skype, . . .

300 to 600 Kbps

800 Kbps – 1 Mbps

Good performance even with 200ms latency!Good performance even up to 200ms latency

* as of XenDesktop 5.6 FP1

Optimized HDX RealTime Peer-to-peer media transport

XenDesktop 4: Isochronous

USB RedirecLon

Plug-‐and-‐play experience

Broad App compaLbility

LAN environments only

Suitable for smaller deployments

XenDesktop 5.5: Webcam

Compression Works with exisLng Unified

CommunicaLon infrastructure

Citrix Receiver for Windows, Linux, Mac

IniLally supported Lync/OCS; now also Skype, GoToMeeLng HDFaces, Adobe Connect, WebEx, SameLme

Media flows through ICA; suitable for mid-‐sized deployments

XenDesktop 5.6 FP1: Peer-‐to-‐Peer CommunicaLon

Media flows peer-‐to-‐peer (no hair-‐pinning on server)

Uncompromised audio-‐video quality, and server scalability

Available for MicrosoY Lync and Cisco CommunicaLons Manager

Network bandwidth efficiency; suitable for large deployments

Evolution of HDX RealTime User Experience & Scalability

NEW!

© 2011 Cisco and/or its affiliates. All rights reserved. Used by permission of Cisco VXI Product Management.

Uncompromised user experience for Cisco Communications Manager

Routes voice and video point-to-point (no hairpinning)

Optimized resources

Bandwidth reduction from megabytes to kilobytes

Reduced processing in data center (high scalability)

Enterprise-grade voice and video based on Cisco UC

VM-User 1

VM-User 2

CUCM VXI Cloud

ICA

ICA

Data Center

Signalling (SIP)

Signalling (SIP)

Signalling (SIP)

Signalling (SIP)

Media Flow

VXC 4000

VXC 6215

• VXI collaboration solutions enable integrating rich media, voice, and video collaboration within a virtual desktop

• Cisco VXC Linux-based devices leverage Citrix’s Virtual Channel SDK for inter-process communication to offload media processing and improve user performance while making video and audio calls

• Offloading of audio calls (and video in future) on repurposed Windows PCs increases lifespan of existing assets

• Great news for call center initiatives using VXC thin clients or software appliances

Cisco VXI Solution Summary

Optimization Pack for Microsoft Lync New in XD5.6/XA6.5 Feature Pack 1

• Optimized Unified Communications solution for Microsoft Lync 2010

• Provides local-like voice and video experience in a virtual environment

• Highly scalable for large enterprise deployments of Lync

•  Integrates seamlessly with existing Lync infrastructure

• Feature of Enterprise and Platinum editions

1. HDX RealTime Connector for Lync 2010 Software Components

• Install on XenDesktop or XenApp base image

• Integrates with Lync UI to provide seamless user experience

• Interacts with client-‐side Media Engine for call control and mid-‐call features

2. HDX RealTime Media Engine Software Components

• Plug-‐in to Citrix Receiver (Windows and Linux to start)

• Responsible for all media processing and call control

• Interacts with RealTime Connector to invoke UC funcLonaliLes

System Architecture

Citrix ConfidenLal -‐ Do Not Distribute

Media Engine Architecture

XenDesktop VDI server

MediaEngine API

VDA

Out-‐of-‐Band API

A/V Media Module

MicrosoY Lync Front-‐End Server

User Device

ICA Protocol

Citrix Receiver Control Channel

HDX RealTime Media Engine

Audio

SIP Signaling

Video

Audio/Video SIP

MicrosoY Lync client

• Audio-Video Communications Support •  Up to 720p30 transmit and receive resolutions •  Selectable 4:3 and 16:9 aspect ratios for transmitted video •  RT Video, H.264, H.263, H.263+, and H.263++ video codecs •  RT Audio, G.711, G.722, G.722.1, G.722.1c audio codecs •  SIP RFC 3261, RFC 3264, RFC 5168 and Microsoft SIP

extensions •  Secure call signaling via TLS •  Audio-video encryption (AES)

• Call Control Features •  Ad-hoc multi-party calling •  Mid-call features •  Full-screen mode and Picture-in-Picture (PIP) •  Works with native Lync as well as standards-based

UC clients registered with Lync •  Integration with Outlook, Office

Solution features

2

5

High Level Call Flow

IniLalize Media Engine

XD/ XA

HDX User A (with HDX Connector)

Lync Server

User Device (with HDX Media

Engine)

XD/ XA

HDX User B (with HDX Connector)

User Device (with HDX Media

Engine)

Signaling (SIP) Media (RTP)

1

ICA

1

IniLalize Media Engine

3

Place Call

4

Receive Call

Call Established

SIP RegistraLon

SoYware Component

Version Number

Citrix Servers XenDesktop 5.0, 5.5, 5.6, 5.6 FP1 – Enterprise,

PlaLnum

XenApp 6.0, 6.5, 6.5 FP1 – Enterprise, PlaLnum

User Devices Windows XP, 7, Thin PC, Embedded

Linux Ubuntu 11.1, Fedora Red Hat, SUSE (in v1.1)

MicrosoY Lync Lync Client Lync 2010

Lync Server Lync 2010

Other (e.g. Edge Server, Conferencing Server)

Lync 2010 compaLble

Solution Component Matrix

• User Device • OS: Windows XP, Windows 7, Windows XPe, WES 7, WES 2009, Windows Thin PC, Fedora Red Hat Linux 6.2, Debian Ubuntu Linux 11.0/10.04

• CPU: SSE3 instrucLon set, 1.4 GHz for standard definiLon (CIF); 2.8 GHz Core Duo for HD 720p

• Total Memory: 1GB • Disk Space: 50 MB available (must have 50MB in %TEMP% and C:\) • Privileges: Admin privileges required to install RealTime Media Engine on terminal • SoYware: Requires Citrix Receiver to be installed prior to installing RealTime Media Engine

• Host Specifications • OS: Windows 7, Windows XP, Vista; Windows Server 2008 for XenApp • Memory: 1GB • Disk Space: 100 MB • SoYware: MicrosoY .NET 3.5 SP1 or greater • Privileges: Admin privileges required for installaLon

Installation Requirements

Wyse thin clients tested

R90L" AMD Sempron 1.5GHz" Windows XP E"R90LE" AMD Sempron 1.5GHz" Windows XP E"R90LW" AMD Sempron 1.5GHz" WES 2009"R90LEW" AMD Sempron 1.5GHz" WES 2009"R90L7" AMD Sempron 1.5GHz" WES 7"R90LE7" AMD Sempron 1.5GHz" WES 7"Z90SW" AMD G-T52R 1.5GHz" WES 2009"Z90DW" AMD G-T52R 1.5GHz" WES 2009"Z90S7" AMD G-T52R 1.5GHz" WES 7"Z90D7" AMD G-T52R 1.5GHz" WES 7"Z90DE7 *" AMD dual core G-T56N 1.65

GHz"WES 7"

Z50E" AMD GT-52R 1.5 GHz" SUSE Linux 11 SP1/SP2 **"

R50L" AMD Sempron 1.5GHz" SUSE Linux 11 SP1/SP2 **"

R50LE" AMD Sempron 1.5GHz" SUSE Linux 11 SP1/SP2 **"

X50m *" AMD dual core G-T56N 1.6 GHz"SUSE Linux 11 SP1/SP2 **"

All listed models support Standard Definition video (CIF); asterisked models also support VGA ** Requires v1.1 of the Optimization Pack for Lync

HP thin clients tested

t610" AMD Dual Core 1.6 GHz" Ubuntu 10.04"t610" AMD Dual Core 1.6 GHz" WES 7"

These models support VGA resolution video (800x600)

• Server Scalability •  Offload encoding / decoding of Video and Audio to terminal device

• Call Quality • Avoid transmission of Video and Audio over TCP/IP from terminal device to server

• Reduces call latency and delay spikes

• Network Bandwidth Usage • Reduce network bandwidth required over non-optimized call by half

Advantages of HDX RealTime Optimization pack

Lync Contact List – Right Click Menu •  Optimized Lync •  Native Lync

MicrosoY disables Lync’s built-‐in Call menu item when naLve Lync calling is disabled. There is no feasible way to remove this element from the right-‐click menu in Lync 2010, it can only be grayed out

User interface

• Objective: Perform all media processing on the user device whenever possible

• Local Registry Keys • HKEY_LOCAL_MACHINE\SOFTWARE\Policies\MicrosoY\Communicator\TelephonyMode • HKEY_CURRENT_USER\SOFTWARE\Policies\MicrosoY\Communicator\TelephonyMode

• Set TelephonyMode = 5


Disabling Lync native calling (Registry Method)

• Windows USB video class (UVC) drivers for web cameras are not generally included on thin clients

• You may need to obtain certain video drivers from third-party sources

• See http://support.citrix.com/article/CTX132265

Installation on Windows thin clients

• See http://support.citrix.com/article/CTX132979

• See also Client Virtualization in Microsoft Lync 2010 (http://www.microsoft.com/download/en/details.aspx?id=21129)

• XenDesktop/XenApp delivery of Microsoft Lync, including voice chat and video chat, is fully supported by Citrix; Microsoft does not directly support third-party products

Technical support of the Optimization Pack for Lync

•  Enterprise Voice telephony features (PBX/PSTN integration) •  Emergency Services support (e.g. E911) •  Support for buttons (HID functions) on USB phones/headsets •  Conformance to Microsoft Lync Call Admission Control specification •  SUSE Linux support (v11 SP1/SP2) •  Support for Logitech C920 webcam with built-in H.264 encoder •  TCP/IP fallback for firewall traversal through Edge Server when UDP is

blocked •  Compatibility with Remote PC feature •  Compatibility with CloudGateway StoreFront 1.2 for automated updating of

the HDX RealTime Media Engine plug-in to the Citrix Receiver for Windows

New features in Optimization Pack 1.1

Lync Call Menu – Phone number dialing

Lync NaLve Lync OpLmized

Citrix Receiver release • Citrix Receiver plug-in for Mac (beta Oct’12)

2013 plans • Support for additional Citrix Receiver versions, incl. HDX Ready

SoC • Windows 8 support (beta feature of v1.1 Oct’12) •  Lync 2013 support

Lync-related enhancements on the roadmap

© 2012 Avaya Inc. All rights reserved. 43 43

Avaya VDI Communicator … solving for scale & QoS for improved real-time communications in VDI

•  off loads processing of real time communications to thin client or PC and Avaya Aura

Performance

•  basic voice if connection to data center or virtual PC is down

Survivability

•  no Avaya hardware required •  deskphone is optional Software only

•  Voice, IM/Presence, contacts / directory, conferencing, messaging

Collaboration

Virtual Desktop •  Avaya one-X Communicator •  VDI Communicator on HP or

Dell Wyse thin clients or on Windows PC •  Full support for Citrix XenDesktop


Avaya one-X Communicator for VDI environments

Avaya one-X Communicator in deskphone mode

Avaya one-X Communicator with Avaya VDI Communicator on thin client

Avaya one-X Communicator on virtual machines with Citrix

in the data center

Avaya VDI Communicator


Remote desktop protocol

(Citrix ICA)

Avaya Real-Time Desktop Virtualization Architecture

Avaya Approach

• Media direct to client •  Lighter load on server • QoS model supported • Call path unaffected by VDI architecture

“Headless Client” on end-point

• Media terminated locally •  “Remote Control” of Real Time app is extended to

‘local client’ on the VDI end point •  Session Down UI for loss of connection scenarios

Local Audio

Drivers

Citrix Receiver

Graphics & Camera

Avaya

VDI Communicator

VDI Thin Client

Citrix Virtual Device

And Graphics Drivers

Data Center GUI

Session Control

One-X Communicator

Media

Control (SIP)

Business Apps

VDI Virtual PC

Control (SIP)

Desktop

Wrap-up

The bottom line…

• HDX is better than ever! •  Handles tough network conditions

•  Less effort to configure

• Audio quality for VoIP is excellent on LAN and WAN

• Optimized solutions for Cisco Unified Communications Manager, Microsoft Lync and Avaya one-X

•  Maximum server scalability and audio-video performance

Work better. Live better.

Documents

HDX Tech Talk - citrix- · PDF fileHDX Tech Talk Optimise streaming ... [er$buﬀer$in$Citrix$Receiver$3.0$for$smoother$ audio$$ when$network$latency$is$variable$ ... terminal device