IxChariot uses low profile software agents called endpoints. develop their own, custom endpoints for use on varying computers, operating systems and. Comprised of the IxChariot Console, Performance Endpoints and. IxProfile, the IxChariot IxChariot Console Seat for License Server, single user. [This page intentionally left blank]. IxChariot User Guide. About IxChariot IxChariot focuses on application simulation and network performance assessment.
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Application Scripts Release 6. Use, duplication, or disclosure by the U. All other trademarks belong to their respective owners.
Corporate Headquarters W. A December 12, 2 IxChariot? This book defines terminology and various related concepts.
Intended Audience This book provides information for individuals responsible for understanding IxChariot concepts and fuide tests with IxChariot. User Guide Contains comprehensive guidance for using IxChariot. This book also provides an overview of the IxChariot user interfaces and Help system. Messages and Application Scripts Explains how to work with application scripts and includes detailed information about messages and how to avoid them.
Performance Endpoints Gives step-by-step guidance for installing and configuring Performance Endpoints for different operating systems. Help Provides context-sensitive information and step-by-step guidance for common tasks, as well as definitions for each field on each window. The following table summarizes these conventions.
Convention Bold Italic Use Window and menu items. Technical terms, when introduced. Variable names and values. File and folder names.
Commands and code examples. Text you must type. Text output displayed in the command-line interface. Fixed Font 2 IxChariot? Table of Contents IxChariot? Application Scripts Application scripts are the key to measuring network performance. They model the ixchadiot applications you use between computers in a network. IxChariot uses application scripts to make the same API calls to the network protocol stacks that real applications make, causing the protocol stacks to perform the same work involved in sending and receiving data that your applications perform every day.
You can alter the parameters and variables that control script commands and thus customize the scripts you use in testing and monitoring.
It also lists and describes all the scripts that ship with IxChariot, all of which are also available free on the Ixia Web site. Application scripts are generally independent of the network protocol. These scripts are discussed separately below.
Chapter 2, Summary of the Scripts Summarizes the Library of application scripts, grouping the application scripts into nine categories: Chapter 4, Script Commands, Parameters, and Variables Discusses the various components of a script, including all the commands and variables that make up an application script.
Chapter 5, Rules for Scripts Explains the rules governing application scripts and ixcharioot variables. As soon as they become available, new scripts can be downloaded free from the Ixia Web site at http: How IxChariot Uses the Scripts Application scripts are kept at the computer where you configure tests that is, at the IxChariot Console ; scripts are only delivered to the endpoints when you start a test.
IxChariot uses the same application scripts, but stores them differently. In IxChariot, application scripts are stored in separate files. At installation time, these binary files are installed in oxchariot Scripts subdirectories of the directory where you installed the IxChariot Console.
For example, if you installed IxChariot in D: You may wish to put the script files on a different drive or in a different directory. If you do, you should update the Where to read script files field on the Directories tab of the Change User Settings notebook.
Refer to the User Guide for IxChariot for more information. The user interface in IxChariot offers dialog boxes for modifying the variables in any script. In addition, you can modify existing script files or create your own script files from scratch. You can also use IxProfile to create an IxChariot script from a line trace file that was generated by a network protocol analyzer, such as Ethereal. Refer to the IxProfile User Guide for more information. The following additions or changes have been made to the Applications Scripts in IxChariot 6.
Beginning with release 6. Enhanced send and receive buffer mechanisms IxChariot 6.
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Pair synchronization support Prior to release 6. Refer to the following for details: Application Group Files on page ? Program Control Commands on page ? Summary of the Scripts We ship an extensive set of application scripts with our products. We also maintain a library of additional scripts on our Web site; they can be downloaded free guied our Web site: This library of application scripts emulates applications in several categories: See Ixia Streams on page A group of IxChariot Application Group Files, each of which emulates an application that employs multiple connections.
Each application group includes two or more pairs; each pair provides its own script. A set of Voice Signaling Scripts emulate the voice signaling traffic generated by the H.
Web Push Scripts are also included in the Internet scripts and emulate xichariot flows of Internet push applications: A set of Streaming Scripts emulates multimedia applications: These scripts must be run over a datagram protocol: Two Large Test Scripts designed to emulate large tests involving 2, to 10, pairs.
These scripts are only available in IxChariot. Three Generic Test Scripts are included for users iser want to test connectivity, throughput, or response time on their network.
Ixia continues to add scripts that emulate well-known applications. These will be available in program updates and via our Web site. In IxChariot, scripts use a wide variety of default loop count values, to emulate repeatedly running an application.
This is to keep the run time of the two scripts about the same, for example, for a few seconds on a 10 Mbps Ethernet LAN. Application Group Files IxChariot provides a set of application group files that you can import into the IxChariot test window. To import an application group into the Test window: Select the desired application group file. IxChariot application groups provide a means to synchronize the actions of multiple scripts, and thereby design tests that emulate applications that employ multiple connections.
For example, FTP operations require two ueer Refer to the following for additional details about application groups: Uaer following table describes the application group files. The server then connects back to the client’s specified data port from its local data port port An active FTP operation involves these tasks: Login to the FTP server. Select the file to be downloaded. The control connection is a TCP connection that emulates the login to the server and the request for the file.
Usrr connection emulates the file transfer. This application group uses eight pairs to emulate a BitTorrent session. It simulates the traffic generated when three hosts connect to the BitTorrent tracker and start transferring data. The simulated BitTorrent session involves these tasks: The three hosts A, B, and C contract the tracker.
Host A starts uploading a file to host B.
While that upload is in progress, Host A also starts downloading a file from Host C. All three hosts report statistics to the tracker. This application group uses multiple gujde events to coordinate the actions among the three hosts. The HTTP session involves these tasks: Browse to a web page containing a video link.
Select the video link. View the video in the player that is automatically opened when the link is selected. The control connection is a TCP connection that emulates browsing to ixchraiot web page and clicking on a video link.
In passive mode FTP, the client initiates both connections to the server, solving the problem of firewalls filtering the incoming data port connection ixvhariot the client from the server. A passive FTP operation involves these tasks: This application group uses five pairs to simulate the traffic generated when a VoIP call is setup and made. The following steps are involved: