Citrix xenapp training

Mod- 1
Author: Prabhu NetSys Infotech
 What is Citrix ?
 History of Citrix ?
 How Citrix works?
 Components of Presentation /XenApp Server
 Architecture of Presentation /XenApp Server
 What is Citrix Licensing and how it works?
 Q & A

Mod -2
 Installation Prerequisites for Presentation Server / Xen
App server
 Installation of Presentation Server / Xenapp
 Configuring and Optimizing Windows 2K3
 Administering XenApp Using the Citrix Access
Management Console /Advanced Configuration console/
App Centre
 Understanding & Managing MetaFrame Licensing
 Q & A

What is Citrix?
 Citrix Metaframe Presentation / XenAppServer is a
technology that can allow remote users to connect to
applications that are actually installed on a remote
computer.
 It uses a mix of technology that results in that remote
application looking and behaving just as though it was
installed on the local machine.

History of Citrix
 Citrix uses Multi-Win technology for performing the
multi-user computing.
 Citrix first shipped Win frame in windows NT in 1995 and
it was a great success to Citrix and Microsoft.
 Communication Protocol used by Citrix is ICA which is
core technology behind the success story of Citrix.

Citrix Versions
 Xen App 5.0, 6.0, 6.5
 Xen App 4.5(PS)
 Xen App 4.0 (PS)
 Xen App 3.0 (PS)
 Metaframe XP FR1,FR2,FR3
 Winframe

How Citrix Works?
 Citrix Metaframe Presentation / XenApp Server offers
ICA Protocol by which Servers and client devices
communicates and exchange data.
 ICA Protocol encrypts and transport an application
screen from the server it is running on to the users client
device and returns the users input to the server.

Introduction to Citrix Presentation /
XenApp server.
 Server Based Computing
 Citrix Digital Independence
 Components of Metaframe Presentation Server

Server Based Computing
 Processing Power on Servers
 Basically client gets to see Screenshot of what is going
on the server .
 Inputs can be Audio ,Video ,Printing ,Desktop Intelligent
service- Copy & Paste
 Scanner via applications
 KB and Mouse Clicks

Citrix Digital Independence
 Any Platform
 Any Devices such as Thick client, Thin client , Handheld
devices ,PDA.
 Any Connection (Low bandwidth, 20kbps)
 Any location (Home users, Citrix web interface )

Linking Clients & Citrix Servers
In a server farm, the main communication processes between clients and servers
are application and desktop enumeration, and ICA sessions.

PORT NUMBERS TO
REMEMBER
 ICA port no : 1494
 IMA port no : 2512 -server to server
: 2513 -server to CMC
 RDP port no : 3389
 XML port no : 80 or 8080

FEATURES of XENAPP
 Configuration Logging is one of the new features in
version 4.5, providing detailed tracking of changes made
to the Citrix Farm from within the Access Management
Console and the Presentation Server Console. Tracking
unplanned and accidental changes to your Farm and by
who.
 Health Monitoring & Recovery is long awaited feature
that will allow you to monitor the state of server and
recover from problems without affecting the users ability
to access the application because the users connection
to that application is redirected through another server.

FEATURES of XENAPP
 SpeedScreen Progressive Display: If you have not
witnessed this new feature in action, you are truly missing out
on one of the best advancements in the Citrix Presentation
Server products I have seen in a long time, Mostly because
we use Medical Diagnostic Imaging applications, and this
new feature makes performance with this type of application
very acceptable.
 Trusted Server Configuration: This feature identifies and
enforces trust relations involved in client connections. This
can be used to increase the confidence of client
administrators and users in the integrity of data on client
devices and to prevent the malicious use of client
connections.

FEATURES of XENAPP
 Application Streaming: The application streaming
feature simplifies application deployment to end users.
With the application streaming feature, you can install
and configure an application on one file server and
deliver it to any desktop or server on demand.

Key Benefits
 Lowest-cost Windows application delivery
 Strongest protection for applications and intellectual
property
 Outstanding application performance over any
network
 Rapid application delivery to all users, anywhere
 Continuous application availability and reliability
 Best end user application experience

Comparison of New Features by
Edition
Advanced Edition Enterprise Edition Platinum Edition
Application Virtualization
Enhancements
100+ new and upgraded features
SpeedScreen
Progressive Display
x64 support
Application Streaming
Application Hub
Isolation 2.0
Health Assistant
Performance Monitoring
SmartAccess
Single Sign-On

Any Device, Any Network, Any
Location
Accessible from any device or client
operating system
High performance over any
connection from any location
Mouse clicks and
keystrokes sent to server
Application executes
entirely on server
Screen updates sent to
client device

MetaFrame Presentation Server
Architecture
Terms need to understand:
 Independent Computing Architecture (ICA) protocol
 Independent Management Architecture (IMA) protocol
 SpeedScreen technology
 MultiWin
 Data Store
 Local Host Cache (LHC)
 Data Collector
 Zones

Independent Computing Architecture : The Independent Computing Architecture (ICA) protocol is
a presentation layer protocol on the OSI model. This is the engine by which a clients and XenApp
(MF) servers communicate data. It was designed by Citrix systems in such a way that can exchange
data over network bandwidth as low as 10 to 20Kbps. ICA has been shown to be 2 to 4 times faster
than RDP.
 Network The ICA protocol can use a variety of transport protocols to
communicate data between ICA clients and XenApp servers. These protocols
include TCP/IP, IPX, SPX, and NetBIOS.
 Server In a server-based computing only screenshots showing what is
happening on the server are transmitted back to the client. The client only
interacts user interface (UI) of the application, but all the commands, keyboard
strokes, and mouse clicks are executed on the server side.
 Client As the application is executed on the remote server, all the client really
needs to be able to view and interact with the application's UI. Today, ICA clients
exist for almost any type of hardware devicefrom Pocket PCs to laptops to
traditional desktops. ICA clients also exist for almost any type of operating
system from Windows to Linux, Unix, and Macintosh.

Independent Management Architecture
 The IMA protocol offers platform for centralization
administration.
 It’s a mechanism by which XenApp Server-to-server
communication occurs.
 Can be termed as backbone of XenApp Server
 IMA installed as service on all XenApp servers.

What is Centralized Administration ?
 Centralized Administrations is the core function of
IMA and this is possible through XenApp
Management Console.
 Presentation console is a Java Based console uses
the IMA protocol for gathering information from
XenApp Server and allowed administrators /users to
make changes on farm wide basis.

SpeedScreen Technology
 To improve the frequent transmission of screen updates,
Citrix designed a technology, known as SpeedScreen for
published applications and desktops over slow
communications links

MultiWin
 MultiWin, a technology developed by Citrix Systems,
originally created the concept of Terminal Server on the
Windows platform.
 It allows multiple simultaneous users to log on to a
Terminal Server, run applications, and share resources
such as the CPU, memory, and I/O ports.

Data Store
 The data store is a database that stores all the
configuration/information needed by a citrix farm.
 Any time you make configuration changes to a XenApp
server on citrix farm the changes are recorded in the
data Store.
 The information stored in the Data Stores includes :
Published Applications, Server Configuration, User
Configuration, Print Environment.

Local Host Cache (LHC)
 Local Host Cache (LHC) is an Access Database that is
located on every Presentation / XenApp Server.
 It carries enough information to keep the server running
in the event that the main Data Store should become
unavailable for any reason.

Zones
 Zones provide a way of grouping geographically close
servers to save network bandwidth and also improve
performance.
 Every zone elects one Data Collector, which every server
in that zone reports to.

Data Collectors
 Data Collectors (DCs) are responsible for keeping zone-
specific information.
 Every zone has one elected server that acts as the DC
and maintains information gathered from all the servers
in that zone.

Data Collectors, Elections, and Priority
 Most Preferred This is the favorite server; it always wins
the election.
 Preferred This server is a favorite among others to win
an election.
 Default Preference This server is neutral and can be
selected to become a DC but is not a preferred
candidate.
 Not Preferred This server should never win an election
unless it is the only server in the zone or all the other
preferred servers are unavailable

XenApp 6.0 Features
 Simplified Management – XenApp 6
dramatically simplifies desktop computing with
AppCenter™, a powerful new management
console that makes it easy for IT to centrally
manage all applications enterprise-wide from a
single location.
 Unparalleled Scalability – XenApp 6 has
been verified to scale up to more than 100,000
concurrent users in a single farm, giving
customers unprecedented levels of cost
savings and datacenter efficiency.Author: Prabhu NetSys Infotech

XenApp 6.0 Features
 Expanded Microsoft Integration – Seamless
integration between XenApp 6 and Microsoft
App-V makes it easy for customers to centrally
manage applications using whatever mix of
local and hosted solutions best fit their unique
requirements. XenApp 6 also includes full
support for Microsoft Windows Server 2008
R2, adding a broad range of platform
enhancements including simplified
provisioning, easier automation, and more
efficient power consumption.Author: Prabhu NetSys Infotech

XenApp 6.0 Features
 Mac and Smart Phone Support – In addition
to supporting PCs, thin clients and laptops,
XenApp 6 now makes it easy for users to
access Windows apps from Macs and popular
smart phones such as Apple iPhone, Google
Android and Windows Mobile.

XenApp 6.0 Features
 Enhanced High-Definition HDX™
Technology – XenApp 6 includes broad new
HDX technology enhancements that allow
customers to deliver real-time media
applications like voice and CD-quality audio
with a rich, high-definition user experience.
New HDX enhancements in XenApp 6 also
expand support for a broad range of USB
devices, including webcams, microphones,
digital cameras and scanners

Citrix xenapp training

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