Citrix Services - Hands-on Lab...

1

XenDesktop troubleshooting

Self-paced exercise guide

2

Table of Contents

Table of Contents .............................................................................................................................................. 2

Overview............................................................................................................................................................. 3

Required Lab Credentials ................................................................................................................................. 3

How to log into the lab environment ...................................................... Error! Bookmark not defined.

Exercise 1: Troubleshooting VDA Registration with XDPing and CDFControl ................................... 4

Exercise 2: HDX Monitor Diagnostics Tool .............................................................................................. 11

Exercise 3: HDX Monitor and Desktop Director (Alternate for Exercise 2) ........................................ 16

Exercise 4: Troubleshooting XenDesktop with PowerShell .................................................................... 23

Exercise 5: VDA High Availability Feature and Troubleshooting .......................................................... 27

Exercise 6: XenDesktop General Database Troubleshooting .................................................................. 32

Exercise 7: Citrix Scout & TaaS Auto Support ........................................................................................... 39

3

Overview

Hands-on Training Module

This training module has the following details:

Objective Provide hands-on experience with common troubleshooting scenarios in XenDesktop 5.x

Provide hands-on experience with common tools in XenDesktop used by Citrix Support

Audience Primary: Citrix Partners and XenDesktop Administrators

Lab Environment Details

This section is used to describe the lab environment and the virtual machines that are used

VM Name IP Address Description

AD.Training.lab 192.168.10.11 Windows Server 2008 R2. Domain controller for training.lab, DNS, DHCP services, and license server.

SQLServer 192.168.10.12 Windows Server 2008 R2. SQL Server 2008 R2 hosting the Provisioning Services and XenDesktop databases.

Win7MAS 192.168.10.100 Windows 7 VDA master image

Win7MCS01 Windows 7 VDA provisioned by Machine Creation Services

XD5x_DDC_1 192.168.10.20 XD 5.6 Controller

XD5x_DDC_2 192.168.10.22 XD 5.6 Controller

XD5x_VDA 192.168.10.21 Windows 7 VDA for XenDesktop 5.6

Required Lab Credentials

Below are the login credentials required to connect to the workshop system and complete the lab

exercises.

Domain/Machine Username Password Description

Training.lab Administrator Citrix123 Domain Administrator

XenServer See note below XenServer User

Training.lab User1 Citrix123 XenDesktop Test User

Note: After entering the Class Code and Business Email Address to connect to the training environment,

you will be assigned an IP address and credentials for the XenServer needed for the labs. Please note the

IP address, username, and password you will need when XenCenter launches and you click Add Server .

Page 4

Citrix Virtual Classroom Exercise 1: Troubleshooting VDA Registration

with XDPing and CDFControl

Overview

The Citrix Virtual Desktop Agent (VDA) registration process is critical, because it ensures a healthy

relationship between the Desktop Delivery Controller (DDC) so that new sessions can be brokered against

the VDA. In this lab, we will explore a scenario where the VDA fails to register with an available DDC.

Step-by-step guidance

Estimated time to complete this lab: 20 minutes

Step Action

1. In XenCenter, select XD5x_DDC1 and then click the XenCenter button.

2. Select XD5x_VDA and click the XenCenter button

3. Click the Console tab for XD5x_VDA and when the machine is ready log on as:

User: Training\Administrator

Password:Citrix123

4. Click on the CitrixTools icon on the desktop

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Citrix Virtual Classroom Step Action

5. Run the following command to display information to the screen

C:\CitrixTools> xdping

Note: The output can be sent to a file and reviewed with notepad using the following

command:

C:\CitrixTools> xdping > output.txt & notepad output.txt

6. Review the output. Were there any errors or warnings?

7. Launch CDFControl from the Desktop

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8. In the menu, click Tools -> Options, and then click checkbox in the Real-time viewing

section to Enable real-time viewing while capturing trace, and then click Save

9. In the Trace Categories drop-down, select All Modules, and then click Start Tracing

10. Click Start, type services.msc in the search field, and then press Enter

11. Select the Citrix ICA Service and click the Restart icon .

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12. When the Citrix ICA Service has restarted, switch back to CDFControl and click Stop

Consuming.

13. Click Tools -> Expert Control to review the error information

Can you find the relevant error message?

Tip: Look for messages that contain “Could not register…” or “Failed to register…” or

“TCP error” reported by CdsWorkerAgent.

14. Click Start, type regedit in the search field, and press Enter. Then navigate to

HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\VirtualDesktopAgent

Note the value for ListOfDDCs

Do you see the problem?

15. Click Start -> Control Panel -> Programs and Features and then select and right-click

Citrix Virtual Desktop Agent and select Change

When the following change dialog appears, select Reconfigure the VDA

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16. In Manually enter controller location(s), add a space and xd5ddc2.training.lab to the

list of Controllers.

Note: A space is required to separate each controller in the list.

Click Check to verify the names can be resolved.

Note: This check only verifies the list of Controllers can be resolved by DNS; it does not

attempt to connect to the Controllers.

Click Next, and then Close to save the changes.

Note: If you switch back to the Registry Editor and press F5 to refresh the display, you

will see the ListOfDDCs now contains both controllers.

17. From the Services control panel, select the Citrix ICA Service and then click the Restart

icon .

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18.

On the desktop launch the Windows Event Viewer using the icon.

Click Windows Logs -> Application and double-click Event ID 1012 to see that the

VDA has successfully registered with xd5ddc2.training.lab

19. Log off from XD5x_VDA and then select and start XD5x_DDC1 using the XenCenter

Start button.

END OF EXERCISE

Summary

Both XDPing output and the CDF trace revealed a VDA registration exception when attempting to

communicate with an available DDC. In this exercise, the list of Controllers (ListOfDDCs) only

contained a single Controller. All available controllers should be entered in the Controllers location field

when installing the Virtual Desktop Agent.

Knowledge about the registration configuration leads into the proper path of investigation. Reviewing the

registry settings revealed an incorrect setting on the VDA machine. Restarting the Citrix Desktop Service

on the VDA triggered the registration process to make tracing easier. A firewall could have also interfered

with port communication, so that should also be investigated in the real world scenario; however, it was

not a problem here.

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Citrix Virtual Classroom Key

Takeaways

The key takeaways for this exercise are:

Learn how to use XDping to identify possible VDA registration issues.

Learn how to trigger a VDA registration from a running VDA so that it can

be traced easier

Learn how to perform real-time CDF trace analysis using the Dynamic

TMF Download feature (TMF files are automatically downloaded as

needed and temporarily stored in the user‟s temp directory. These files are

deleted automatically after use.)

Learn how to use CDFControl's ExpertControl feature to easily find errors

Learn about registry based VDA registration and some of the underlying

communication that occurs via CDF tracing

Links:

CTX123278: XDPing

CTX111961: CDFControl

http://support.citrix.com/article/CTX123278


Page 11

Citrix Virtual Classroom Exercise 2: HDX Monitor Diagnostics Tool

Overview

This lab demonstrates how HDX Monitor can be used to fine tune and troubleshoot HDX settings in a

XenDesktop 5 environment.


The following procedure outlines the process to use XDPing and HDX Monitor for common problem types.

Estimated time to complete this lab: 15 minutes.

Step Action

1. In the XenCenter console log into SQLServer

2. Open Internet Explorer Browser to the XD 5.6 Web Interface

http://xd5ddc1.training.lab/Citrix/Desktopweb

3. Log in and launch the virtual desktop named Windows 7


Password:Citrix123


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4. Click on HDX Monitor 2.0 located on desktop, select XD5VDA, and then click the Open

button.

5. Note the HDX Index Score and review the status icons.

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6. Click the Alerts link to see which HDX settings can be changed to optimize the user

experience.

7. Close HDX Monitor and log off from the VDA session.

8. Switch to XD5x_DDC_1 and launch Desktop Studio from the Windows task bar.

Navigate to HDX Policy -> Users and select the HDX Optimization policy.

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9. Click Edit, and then click the Settings tab and add the following:

ICA -> USB Devices: Client USB device redirection = Allowed

ICA -> Visual Display –> Still Images: Extra Color Compression = Enabled

ICA -> Visual Display –> Still Images: Lossy compression level = Low

Click OK to save the settings. The policy should now appear as shown in the screenshot.

10. Logon to XD5x_VDA and double-click HDX_VCPriority.reg on the Desktop, and the

click Yes and OK.

Note: The .reg file changes the Graphics – Thinwire virtual channel priority to Real Time

as recommended in the Warnings section of the HDX Alerts.

Log off of XD5x_VDA.

11. Switch back to SQL Server and launch the Windows 7 VDA again.

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12. Launch HDX Monitor 2.0 using the Desktop icon, and note the new HDX Index Score

and Alerts to see the changes.

Exit HDX Monitor and note the message indicating HDX monitor will now run in the

background.

Mouse over the HDX Monitor icon in the notification area to see the quality of the HDX

experience.

Log off the VDA session.

END OF EXERCISE

Summary

The HDX Monitor is a tool to validate the operation of Citrix's HDX stack including the latest HDX

MediaStream for Flash and HDX Real Time features. Use it to view bandwidth usage, session settings and

performance metrics.

Key

Takeaways


Learn how to monitor session information with HDX Monitor

Review Alerts for recommendations on how to improve HDX settings.

For more information on HDX Monitor please see the following link.

Related links: CTX124982: How to Optimize XenDesktop Interactivity

Performance on WAN Connections

http://hdx.citrix.com/hdx-monitor



Page 16

Citrix Virtual Classroom Exercise 3: HDX Monitor and Desktop Director

(Alternate for Exercise 2)

Overview

This lab demonstrates how the HDX information in Desktop Director can be used to fine tune and

troubleshoot HDX settings in a XenDesktop 5 environment.


The following procedure outlines the process to use XDPing and HDX Monitor for common problem

types.


Step Action

1. In the XenCenter console log into SQLServer

2. Open Internet Explorer Browser to the XD 5.6 Web Interface


3. Log in and launch the virtual desktop named Windows 7


Password:Citrix123


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4. Switch to XD5x_DDC_1 and launch Desktop Director

5. Log in to Desktop director as Training\Administrator.

6. Type XD5VDA in the search field and click Training\XD5VDA in the drop down

window.

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7. Review the HDX section on the right to see if there are any Errors or Warnings .

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8. Click the items that show an Error or Warning to reveal more details.

For example, click Graphics- Thinwire to review the recommendations in the Warnings

and Hints sections for resolving an error or fine tuning HDX settings

.

9. Launch Desktop Studio from the Windows task bar.

Navigate to HDX Policy -> Users and select the HDX Optimization policy.

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10. Click Edit, and then click the Settings tab and add the following:

ICA -> USB Devices: Client USB device redirection = Allowed

ICA -> Visual Display –> Still Images: Extra Color Compression = Enabled

ICA -> Visual Display –> Still Images: Lossy compression level = Low

Click OK to save the settings. The policy should now appear as shown in the screenshot.

11. Logon to XD5x_VDA and double-click HDX_VCPriority.reg on the Desktop, and the

click Yes and OK.

Note: The .reg file changes the Graphics – Thinwire virtual channel priority to Real Time

as recommended in the Warnings section of the HDX Alerts.

Log off of XD5x_VDA.

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12. Switch back to SQL Server and log off the current desktop session on the Windows 7

VDA.

Launch the Windows 7 desktop session again.

13. Switch back to XD5x_DDC_1 and refresh the Desktop Director display with the F5 key.

The HDX section should look different now that you have made some changes to the

HDX settings using HDX policy and the registry setting to give higher priority for

Thinwire.

14. Switch back to SQLServer and log off the Windows 7 VDA session.

END OF EXERCISE

Summary

The HDX Monitor component included in Desktop Director is a tool to validate the operation of Citrix's

HDX stack including the latest HDX MediaStream for Flash and HDX Real Time features. Use it to view

bandwidth usage, session settings and performance metrics.

Page 22


Takeaways


Learn how to monitor session information with HDX Monitor

Review Alerts for recommendations on how to improve HDX settings.

For more information on HDX Monitor please see the following link.

Related links: CTX124982: How to Optimize XenDesktop Interactivity

Performance on WAN Connections

http://hdx.citrix.com/hdx-monitor



Page 23

Citrix Virtual Classroom Exercise 4: Troubleshooting XenDesktop with

PowerShell

Overview

In this exercise we will explore several PowerShell SDK commands to diagnose and troubleshoot various

XenDesktop components.


The following procedure outlines the key steps to trouble with PowerShell commands.


Step Action

1. In XenCenter, select XD5x_DDC1 and login at the console.

2. Click the CitrixTools icon on the Desktop.

3. To initialize the PowerShell environment, type: PowerShell

4. To check for VDA registration events on the virtual machine from the controller, run the

following command.

Get-WinEvent -Computer XD5VDA -Old -Prov 'Citrix Desktop Service' | fl

Alternatively, you can run the following script. Note: You may need to execute the

Set-ExecutionPolicy RemoteSigned command to allow scripts to run.

./GetVDAEventLogs.ps1

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5. i

t

To check the status of the broker service, run the following command to first load the

Citrix snap- ins.

Add-PSSnapin Citrix*

6. f

f

f

f

f

f

f

f

f

f

f

f

f

f

f

f

f

f

r

r

r

To check the health of the broker, and to verify it can connect to the database, run the

following command:

Get-BrokerServiceStatus

Example: If the Database is unavailable the status PendingFailure is displayed; the

status would transition to Failed if the connection is not restored in 5 minutes.

The amount of time is controlled by the following registry key which if not set

defaults to 300 seconds (5 minutes):

HKLM\Software\Citrix\DesktopServer\DataStore\Connections\Controller\MaxConnectivityLossSecs; DWORD 300 (Seconds)

This is the maximum elapsed time over which an SQL command batch can be retried when database connectivity appears to have been lost, and determines the maximum period that the broker service reports state „PendingFailure‟ via the SDK before transitioning to „Failed‟

CTX126704: Registry Entries Used by XenDesktop 5.x Broker Service


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7. G

e

t

To view the database configuration setup, run the following command:

Get-BrokerDBConnection

The following command will display the broker information useful for troubleshooting.

- LastActivityTime is the last time the broker polled for information.

- LastStartupTime is when the service was last started.

Get-BrokerController

The following command will display the Hypervisor State and indicates the preferred

controller and the capabilities of this host connection object.

Get-BrokerHypervisorConnection

New in XenDesktop 5.6 to view the user Connection history for the past 48 hours, run the

following command:

Get-BrokerConnectionLog

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8. The following command tests whether or not a given license server can be used by the

broker service.

Test-BrokerLicenseServer licenses.mycitrixdemo.net

Command Results

Compatible The license server is compatible with the Broker service.

Incompatible The license server is incompatible with the Broker service.

Inaccessible The license server is inaccessible; it may be shut down, unreachable, or

non-existent.

Internal Error The server cannot be used due to an internal error. A required licensing

component on the license server may not be installed, configured, or

working correctly.

END OF EXERCISE

Summary

PowerShell SDK commands allow you to diagnose and troubleshoot various XenDesktop components.

Key

Takeaways


Learn how to review VDA registration messages and errors in the event log

remotely

Learn how to verify the Broker service configuration and state as well as the

connection history by using PowerShell commands.

For more information please see the following resources:

XenDesktop 5 PowerShell SDK Primer

CTX128057: Getting Started with PowerShell in XenDesktop 5

CTX127254: XenDesktop 5 SDK Cmdlet Help

http://blogs.citrix.com/2011/03/18/xendesktop-5-powershell-sdk-primer-part-1-getting-started/

http://support.citrix.com/article/ctx128057

http://support.citrix.com/article/ctx127254

Page 27

Citrix Virtual Classroom Exercise 5: VDA High Availability Feature and

Troubleshooting

Overview

The High Availability feature in the Virtual Desktop Agent (VDA) allows users to connect directly to the

VDA if all available controllers fail. In this mode, the VDA accepts direct ICA connections from users,

rather than the normal connections brokered by a controller. This feature is designed for use on the rare

occasion that a controller fails. This method is not an alternative for other forms of HA.


The following procedure outlines the key steps to setup and troubleshoot the VDA high availability

feature.


Step Action

1. In the XenCenter console select XD5x_DDC1 and XD5x_DDC2 and click the XenCenter

button.

2. Select XD5x_VDA, click the Console tab and log in as Training\Administrator.

3. Run regedt32 and verify the following registry value:

HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\ VirtualDesktopAgent,

(REG_DWORD): HighAvailability with a value 1

Note: This key doesn‟t exist by default – it has been added already for this lab exercise.

Page 28


4. Verify the following registry value

HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\ Ica\Session (REG_DWORD):

VDAOperationalMode with a value 2

Note: A value of 2 means the VDA is in High Availability Mode; this is a read only value.

HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\ VirtualDesktopAgent

(REG_DWORD): HaRegistrarTimeout

Note: This key controls time period in seconds that the Virtual Desktop Agent will try

registering with the controller before initiating high availability mode. Default is 5 minutes

and the key is not created by default.

Page 29


5. Click the TCPview icon on the Desktop

Wait (approximately 2 minutes) until ports 1494 and 2598 open and display before moving

on to the next step.

Note: Alternatively, you can use netstat to monitor the ports with the following command:

netstat –an

6. Important: Log off from XD5x_VDA

Page 30


7. Select SQLServer and log in at the console.

Click on the CitrixTools icon on the desktop

Run the following command to verify that port 1494 on the VDA is now accepting

connections:

> Ctxprtchk 192.168.10.21 1494

8. On the Desktop of the SQLServer VM, click on the ha.ica icon

This will allow you to connect the VDA when the Controller is not available.

9. Select XD5x_DDC1 and XD5x_DDC2 and click the XenCenter Start button.

Log off from the desktop session on XD5x_VDA.

END OF EXERCISE

Summary

VDA HA only works with dedicated desktops; it cannot be configured to work with pooled desktops. A

VDA must contact a controller within 30 days to continue to operate.

Page 31


Takeaways


Learn how to implement VDA High Availability mode

Learn how to troubleshoot VDA High Availability mode

For more information please see the following resources

CTX127564: How to Implement High Availability Features in XenDesktop 5

CTX127392: How to Create ICA Launch Files for High Availability Mode

eDocs: High Availability of the Virtual Desktop Agent



http://support.citrix.com/proddocs/topic/xendesktop-rho/cds-plan-high-avail-vda-rho.html

Page 32

Citrix Virtual Classroom Exercise 6: XenDesktop General Database

Troubleshooting

Overview

Understanding how XenDesktop works and leveraging the tools listed in the exercise will allow the

student to more effectively troubleshoot common scenarios.


The following procedure outlines the key steps to troubleshoot XenDesktop configuration and database

issues.


Step Action

1. Switch to XD5x_DDC_1 and login at console

2. Click on the CitrixTools icon on the desktop

3. Execute the following command to see if there are any problems and to create a ZIP file

that contains a collection of output files:

xddbdiag windows 192.168.10.12 CitrixXenDesktopDB

Note: There is a batch file called DdDiag.bat in the CitrixTools directory you can

alternatively execute.

Page 33


4. To open an explorer window from the command prompt for the current directory and to

extract output XD5Controller1_XDDbdiag_Output.zip:

Type: start .\

Right-click XD5Controller1_XDDbdiag_Output.zip, select Extract All, and then

Extract.

Double-click the following files to view them in Open Office.

(

Note: Select Comma in the Separator options –> Seperated by options.

sqlConnectionLogInfoTaaS which will display all connection attempts within the in the

past 48 hours. This will capture connection error as well as brokering resolution timing.

sqlVDAStatesInfoTaaS which will display vda information such as

Version,LastDe-registration Reason, Last Contact Time

Page 34


5. In the XenCenter console log into SQLServer VM

Open Microsoft SQL Server Management Studio

Connect to the local SQL server

Right click the SQL server Local and select Activity Monitor

Page 35


6. In the Processes section on the right, click the filter arrow and select by

Application Citrix

Note: Any prefix with Citrix indicates a connection from the Controller.

7. In the XenCenter console log into XD5x_DDC_1

Click on the Performance Monitor icon on Desktop

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8. Click the + icon to add the following performance counter:

Citrix Broker Service -> Database Connected

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9. To see what happens when the Controller loses its connection to the database:

Switch to SQLServer and login.

In Microsoft SQL Server Management Studio the right click the SQL server Local and

select Stop

10. Switch back to XD5_DDC_1 and notice the performance counter Database Connected is

set to a value of 1 when there is a connection to the SQL server. If the connection is

terminated the value will go to 0.

11. Start the Database Service again.

Page 38

Citrix Virtual Classroom END OF EXERCISE

Summary

Citrix and Microsoft tools can be used to help determine the health and performance of your XenDesktop

environment from a database perspective.

Key

Takeaways


XDDBDiag can be used to perform a consistency check on your XenDesktop

5.x database

Performance monitor displays the active controller service connections to the

XenDesktop database.

For more information, please see the following resources:

CTX128075 XDDBDiag for XenDesktop


Page 39

Citrix Virtual Classroom Exercise 7: Citrix Scout & TaaS Auto Support

Overview

Citrix Scout can be used to collect key data points and environment information from your XenDesktop

deployment, including CDF traces. The collected data is compressed and uploaded to the TaaS Auto

Support site for auto analysis.


The following procedure outlines the key steps to collect XenDesktop environment data using Citrix Scout and then

reviewing the uploaded data collection in TaaS Auto Support.


Step Action

1. Log into the XD5x_DDC_1 console session, and launch Citrix Scout from the

Desktop.

2. Click the Collect & Upload button and then select all machines in the list. Note the

message in the Status/Action column for WIN7MCS01 and that the machine has been de-

selected. Mouse-over the message to see the full text. The status must be OK in order to

collect the required data.

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Citrix Virtual Classroom 3. Log into WIN7MCS01 and double-click the launch the Citrix Tools icon to open a

command prompt:

To enable WinRM, type and respond with default options: winrm quickconfig

To start the Remote Registry service, type: services.msc

Find and select Remote Registry, double-click and set Startup type to

Automatic, and click OK.

Start the Remote Registry service

Note: WinRM, Remote Registry, and File and Printer Sharing must be enabled on remote

VDAs and Controllers in order for Scout to collect the required data. These services are

typically configured correctly when the Virtual Desktop Agent (VDA) software is installed

with default settings.

Log off of WIN7MCS01

4. Switch back to XD5x_DDC_1 and select WIN7MCS01 again. The Status will now change

to OK.

Click Continue and the data collection will proceed providing a status at the bottom left of

the Scout window.

When the collection is finished, click Save to accept the default Reports folder.

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Citrix Virtual Classroom 5. Enter your My Citrix credentials and a brief description in the Upload dialogue.

Click Close when the upload completes and exit Citrix Scout.

Note: The Service Request is optional allowing you to upload and analyze data before

opening a case with Citrix Technical Support.

An upload notification will be sent to the email address associated with your My Citrix

logon account regarding the file upload and analysis results.

6. Open Internet Explorer and enter your My Citrix credentials to log into TaaS Auto Support

(https://taas.citrix.com). If this is your first time you have logged in, you must accept the

Privacy Statement to continue.

Page 42

Citrix Virtual Classroom

7. Review the XenDesktop Overview tab for a summary of issues identified as well as

Environment information included in the data upload.

Review the Analysis Results tab for a full list of issues identified.

Note: If you are troubleshooting an issue that you can reproduce in your environment, the

CDF Trace Not Available message appears to indicate that you have not included a CDF

trace in your upload. Running a CDF trace while reproducing the issue and then

proceeding to a data collection and upload provides TaaS Auto Support with a greater level

of detail that can be used to identify issues.

END OF EXERCISE

Page 43

Citrix Virtual Classroom Summary

Citrix Scout provides a quick and convenient way to collect XenDesktop environment data and upload

that data to TaaS Auto Support for general health check and problem analysis when troubleshooting.

Key

Takeaways


Citrix Scout makes collecting XenDestkop environment data fast and easy

TaaS Auto Support saves you time by identifying issues when troubleshooting

Note: Both Citrix Scout and TaaS Auto Support require a My Citrix account for

data upload and access to data analysis.

For additional information, please refer to the resources:

CTX130147: Citrx Scout

Tools as a Service (TaaS) Auto Support

Please complete the survey

We value your feedback! Please take a moment to let us know about your self-paced

lab experience by completing a brief survey on the web portal before you logout.


https://taas.citrix.com/

https://citrix.qualtrics.com/SE/?SID=SV_eJagVJz6MOVUzch

https://citrix.qualtrics.com/SE/?SID=SV_eJagVJz6MOVUzch

Page 44

Citrix Virtual Classroom Revision History

Revision Change Description Updated By Date

1.0 Original Version WW Readiness June 2013

About Citrix

Citrix Systems, Inc. designs, develops and markets technology solutions that enable information technology

(IT) services. The Enterprise division and the Online Services division constitute its two segments. Its

revenues are derived from sales of Enterprise division products, which include its Desktop Solutions,

Datacenter and Cloud Solutions, Cloud-based Data Solutions and related technical services and from its

Online Services division's Web collaboration, remote access and support services. It markets and licenses its

products directly to enterprise customers, over the Web, and through systems integrators (Sis) in addition to

indirectly through value-added resellers (VARs), value-added distributors (VADs) and original equipment

manufacturers (OEMs). In July 2012, the Company acquired Bytemobile, provider of data and video

optimization solutions for mobile network operators.

http://www.citrix.com

http://www.citrix.com/

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