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Avaya ExpertNet Lite Assessment Tool ELAT User Manual

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ExpertNet™ Lite Assessment Tool
User Guide
May 2008

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Summary of Contents for Avaya ExpertNet Lite Assessment Tool ELAT

  • Page 1 ExpertNet™ Lite Assessment Tool User Guide May 2008...
  • Page 2 While reasonable efforts were made to ensure that the information in this document was complete and accurate at the time of printing, Avaya Inc. can assume no liability for any errors. Changes and corrections to the information in this document may be incorporated in future releases.

  • Page 3: About This Guide

    ExpertNet Lite Assessment Tool - User Guide About this guide This guide is intended for BusinessPartners and Avaya Associates using the ExpertNet™ Lite Assessment Tool (ELAT) for the first time. It describes how to get started and how to use ELAT for customers purchasing an IP Telephony solution that requires an IP Network Readiness Assessment.
  • Page 4 ExpertNet™ Lite Assessment Tool Controller – Runs on a PC to measure delay ● and packet loss and to produce a dataset. Avaya Traffic Simulator – A remote agent that is deployed on various PCs on the ● customer network to work with the ELAT controller.
  • Page 5 Network 100Mb /s (or greater) Ethernet adapter (NOTE: If multiple NIC’s exist, it is ● preferable, but not required, to disable all but one) Requirements for Avaya Traffic Simulator Hardware Standard IBM PC-compatible ● Intel x86 CPU or compatible, Pentium 1Ghz performance ●...
  • Page 6 Obtain the ELAT License File After purchasing a 30-day ELAT subscription, email the ELAT administrator (elatadmin@avaya.com) to obtain a license file. When you receive the file (license.txt), save it in the ELAT config directory (by default it is C:\Program Files\Avaya\ELAT\config).
  • Page 7 After you have installed the ELAT Controller application and copied a valid license file to the config directory, you can launch the ELAT Controller. To launch ELAT select: Start > All Programs > Avaya > ExpertNet™ Lite Assessment Tool > ExpertNet™ Lite Assessment Tool > Controller. The main window is displayed:...
  • Page 8 ExpertNet Lite Assessment Tool - User Guide Configuring the ELAT Controller To run the ELAT Controller Configuration wizard, select Configuration > Modify Configuration. You can review all the parameters and accept the defaults or change any parameter as per your network needs. The most frequently modified parameters are: Data Collection Interval from the General Settings page.
  • Page 9 Interval end of this period, ELAT will stop running tests and automatically upload the data to the Avaya FTP Server. The default interval is 5 days. Logging Verbosity Select the level of detail the logging subsystem will store in the log file.
  • Page 10 ExpertNet Lite Assessment Tool - User Guide Discover Topology Use Existing Topology No Topology Step 2.1: Location to Start Network Discovery Steps 2.1 and 2.2 will only display if you selected the Discover Topology option. Use default gateway Select this option if you want the Controller to use the default gateway configured on the Controller PC to start network discovery from.
  • Page 11 We recommend "public" or "Avaya" as the Read community strings. Please have the customer verify that the community strings will expire after data collection has concluded.
  • Page 12 ExpertNet Lite Assessment Tool - User Guide If the customer is not willing to allow this level of access you can proceed without read community strings. Performance criteria data will not be collected. Add the appropriate SNMP read community strings, and prioritize using Move Up and Move Down buttons.
  • Page 13 ExpertNet Lite Assessment Tool - User Guide Step 4: SNMP Settings On this page you can set values for SNMP requests sent on the network. These settings rarely need to be changed. Poll Interval of Single Node Maximum Total Number of Polls/Sec Number of Request Retries Request Timeout...
  • Page 14 ExpertNet Lite Assessment Tool - User Guide Step 5: Ping Settings On this page you have the option to change the default settings for Ping tests run on the network. Again, these settings rarely need to be modified. Average Number of Polls/Sec Packet Size (bytes) Request Timeout...
  • Page 15 ExpertNet Lite Assessment Tool - User Guide Step 6: RTP General Configuration On this page you have the option to change the default settings for RTP tests run on the network. All RTP tests that are added automatically will use these settings. You can manually add further RTP tests with different settings when the Wizard settings are configured.
  • Page 16 Defines the starting port for the range of ports which can be used for RTP tests. The typical range for RTP tests used by Avaya is 2048 to 3390, but any other range between 1024 and 65535 can be used. The range needs at most 100 unobstructed ports to operate correctly.
  • Page 17 Simulator Installing the Avaya traffic Simulator Install the Avaya Traffic Simulator on each remote endpoint you want to test. Each remote endpoint MUST be on the same Voice VLAN on which the VoIP equipment will be eventually installed. Each Traffic Simulator will take approximately 2 minutes to install.
  • Page 18 Add RTP Tests About RTP Paths An RTP path is a route from the ELAT controller to an edge PC that has the Avaya Traffic Simulator installed. RTP paths can optionally be tracerouted. As metrics are collected for RTP paths, they will be displayed in the Delay, Jitter and Loss columns.
  • Page 19 ExpertNet Lite Assessment Tool - User Guide TProtocolSelect a traceroute protocol to be used to discover intermediate routers on To Endpoint Select an endpoint to which the RTP test is to be created. If Traffic Simulators are connected and registered with the Controller, they will be available in the drop-down menu for use in making new RTP tests Codec Defines the Codec of the RTP test calls.
  • Page 20 ExpertNet Lite Assessment Tool - User Guide Add Ping Tests About Ping Paths A ping path is a route from the ELAT controller to any edge device. Ping paths may optionally be tracerouted. Like RTP paths, if Ping paths are tracerouted, the routers discovered are represented in the Path Details View for any selected path.
  • Page 21 ExpertNet Lite Assessment Tool - User Guide To Endpoint Host name or IP address of a device that you want to be an edge device of the new ping test path. Protocol Select a protocol to discover and ping this path. UDP is the recommended protocol.
  • Page 22 ExpertNet Lite Assessment Tool - User Guide Understanding the Network Paths View All of the Network Paths or Tests that you have created are added in the Network Paths view. The icon at the beginning of each row indicates the type of test. The icons display in red for failed tests.
  • Page 23 Indicates whether traceroute is enabled or disabled for a path. Will be automatically off if the test is in the same subnet. Displays whether there is a router/switch in the path which can be contacted using SNMP. OK - SNMP status was successfully obtained.
  • Page 24 ExpertNet Lite Assessment Tool - User Guide DSCP (Differentiated Services Code Point) Number of calls Delay/Loss/Jitter When ELAT completes the data collection, it will upload the dataset automatically to the FTP server as configured in the Configuration Wizard. This column is useful for determining DSCP problems on the network.
  • Page 25 ExpertNet Lite Assessment Tool - User Guide Verify the Tests When all of the tests you want to run are configured you should verify them to ensure that they can be run successfully. It is especially important to verify all RTP tests at least once as you may have firewall and port related issues when the tests are started.
  • Page 26 ExpertNet Lite Assessment Tool - User Guide Begin Data Collection At this point the Network Paths View should be populated with tests that provide a good coverage of your network, and all of these tests should be verified. Every ping test will collect raw Round Trip Time (RTT) data for all ingress interfaces on the path.
  • Page 27 ELAT support team (elatsupport@avaya.com). Automatic Upload Notification The ELAT server polls the Avaya external ftp server on a regular basis. Once the ELAT server finds the dataset automatically uploaded, you will receive the following email.
  • Page 28 ExpertNet Lite Assessment Tool - User Guide Avaya Associates Avaya Associates should then access the ExpertNet Lite web server and download their report. For further information see Appendix C: Avaya Associates: Downloading the Report. Avaya BusinessPartners BusinessPartners will receive an email with encrypted version of their report from their ELAT representative.
  • Page 29 ExpertNet Lite Assessment Tool - User Guide Analyzing the Report Reports are generated in RTF format and can be viewed and edited in Microsoft Word. All reports contain the following sections: Introduction to Avaya Basic Assessment report ● Executive Summary ●...
  • Page 30 ExpertNet Lite Assessment Tool - User Guide Overview Graphs Overview chart is available per path or target ● Delay and Jitter have maximum, average, and minimum values-max and min are ● only in the overview chart Average is over a 10 minute period ●...
  • Page 31 ExpertNet Lite Assessment Tool - User Guide QoS Graphs Separate graphs displaying Delay Jitter and Loss are available for each target.
  • Page 32 ExpertNet Lite Assessment Tool - User Guide SNMP Data If SNMP access to routers is enabled, and read community strings are available graphs displaying performance criteria will also be available. 1. This feature is only available for Cisco Routers, Cajun, Extreme, 3Com, Xylogics devices at this time.
  • Page 33 ExpertNet Lite Assessment Tool - User Guide...

  • Page 34: Troubleshooting

    Once the community strings expire or are deleted, the community strings in the dataset will no longer be valid and will not compromise the customer’s network. We recommend "public" or "Avaya" as the Read community strings. Please have the customer verify that the community strings will expire after data collection has concluded.
  • Page 35 Q: Why is there no CPU utilization for one of my routers? A: There are several reasons why CPU is not being reported: CPU is supported for some (not all) devices manufactured by 3Com, Avaya, ● Cisco, Extreme, and Xylogics.
  • Page 36 UDP ping entirely. Either way, the results are skewed. Q: What devices should I use as endpoints? A: For RTP tests endpoints must be Windowx XP boxes with the Avaya Traffic Simulator installed. For Ping tests, PCs or UNIX workstations are preferred. The hardware is typically very stable, and many PCs or workstations will respond to pings quite efficiently.
  • Page 37 ExpertNet Lite Assessment Tool - User Guide devices, cpuUtilization for Xylogic). Interface utilization is retrieved from standard MIB2 (ifInOctects, ifOutOctets, ifInDiscard, ifOutDiscards). If ifXTable extension MIB is supported on a device, high-precision values ifHCInOctects and ifHCOutOctets are retrieved instead of ifInOctets and ifOutOctets. Q: The Delay graphs show a threshold of 80msec.
  • Page 38 ExpertNet Lite Assessment Tool - User Guide Q: How does the throttling mechanism work? A: The throttling mechanism is separate for ping and SNMP polling. For SNMP, configuration wizard in "Step 4: SNMP Settings" exposes Poll Interval of Single Node[secs] and Maximum Total Number of Polls/Sec parameters. Poll interval defines a polling frequency of each node.
  • Page 39 ExpertNet Lite Assessment Tool - User Guide Navigate to ● HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\ EnableICMPRedirect and then set the value of this parameter to 0. Q: The Traffic Simulator is on a machine with dynamic IPs and its IP keeps changing. A: The ELAT Controller identifies the Traffic Simulator by IP address and not MAC. If the IP address does change, then the old entry for the Traffic Simulator needs to be removed and the Traffic Simulator would need to re-register.

  • Page 40: Appendix A: Installing The Controller And Test Agents

    8. You are now ready to install the license key. You should have received the license key from Avaya (usually via email). It is a file named “license.txt”. Paste the file into the ELAT config directory. If you installed the device to the default location the path is C:\Program Files\Avaya\ELAT\config directory.
  • Page 41 ExpertNet Lite Assessment Tool - User Guide Server port from the default value of 80 you need to navigate to http:// <controller_ip_address>:<port_number> NOTE: To find the IP address of the PC open the Control Panel > Network Connections > LAN Area Connection dialog and open the Support tab. On the page that displays, click the link to download the test agent.
  • Page 42 ExpertNet Lite Assessment Tool - User Guide On this page enter the IP Address or hostname of the Controller and click Next. Enter the install location, use the default install location and click Next. You are now ready to begin the installation. Click Next. Click Close.

  • Page 43: Appendix B: Firewall Configuration

    ExpertNet Lite Assessment Tool - User Guide Appendix B: Firewall Configuration If you have installed Avaya ExpertNet Lite Assessment Tool or Avaya Traffic Simulator on a computer with a firewall installed, you may find that RTP tests fail. This may be due to the test data being discarded by the firewall.
  • Page 44 Click Edit. From the Personal Firewall Profile window, open the Exception List. Click Add. Enter the following information in the appropriate fields: Description: Avaya Traffic Simulator ● Target: Specified Application (enter C:\Program Files\Avaya\Traffic ● Simulator\trafficSimulator.exe) Action: Allow ● Ports: All ports.

  • Page 45: Appendix C: Avaya Associates: Downloading The Report

    ExpertNet Lite Assessment Tool - User Guide Appendix C: Avaya Associates: Downloading the Report Download Report Once the dataset is uploaded, you will be able to view and analyze the data by generating a report. Click on ExpertNet™ Lite Home link. Then click the View Datasets link.
  • Page 46 ExpertNet Lite Assessment Tool - User Guide Generate and Download Custom Reports A custom report that excludes certain targets or paths can also be generated. 1. Select the Generate link in the Custom Report column on the View Datasets page. You will be presented with a graphical representation of the paths.
  • Page 47 ExpertNet™ Lite Assessment Tool and not supported as a standalone tool A more sophisticated Avaya tool for determining whether a customer network is ready to support VoIP calls. It, forexample, can simulate higher call volumes than the ExpertNet™...

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