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ExpertNet Lite Assessment Tool - User Guide

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SNMP Data

If SNMP access to routers is enabled, and read community strings are available graphs
displaying performance criteria will also be available.

1

.

1. This feature is only available for Cisco Routers, Cajun, Extreme, 3Com, Xylogics devices at this time.

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Summary of Contents for ExpertNet Lite Assessment Tool

Page 1: ...ExpertNet Lite Assessment Tool User Guide May 2008...

Page 2: ...Avaya Inc can assume no liability for any errors Changes and corrections to the information in this document may be incorporated in future releases Documentation disclaimer Avaya Inc is not responsibl...

Page 3: ...ET requests ELAT provides RTP test functionality through the use of Traffic Simulators which are installed on remote machines on the customer network ELAT supports two ping protocols UDP default and I...

Page 4: ...ya Traffic Simulator A remote agent that is deployed on various PCs on the customer network to work with the ELAT controller Dataset from the agent in the form of a compressed file is uploaded automat...

Page 5: ...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...

Page 6: ...on the Controller PC Disable virus scan and SMS software It is preferable but not essential that you Disable all background services like Office Find Indexing Service SETI home etc If you have multipl...

Page 7: ...about installing the Controller refer to Appendix A Installing the Controller and Test Agents Launch the Program After you have installed the ELAT Controller application and copied a valid license fi...

Page 8: ...ed parameters are Data Collection Interval from the General Settings page Community strings from the Read SNMP Community Strings page Without the SNMP community strings ELAT cannot retrieve CPU and ot...

Page 9: ...a At the 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 Level Select the level of detail the...

Page 10: ...reuse the existing topology file from a previous discovery No Topology Select this option if you do not want to or cannot discover network paths The Network Tests Discover Ping Tests entry in the main...

Page 11: ...ion 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 Rea...

Page 12: ...not be collected Add the appropriate SNMP read community strings and prioritize using Move Up and Move Down buttons Select the Prompt for a community string later if none of these work option if you...

Page 13: ...e number of SNMP requests per second sent to all nodes This setting takes precedence over Poll Interval if Poll Interval is too small it is automatically recalculated by the Controller to satisfy the...

Page 14: ...ng is 1 ping per second Packet Size bytes Used to set the size of the packets sent by the Controller The value is in the byte size of the ping packet without IP and Ethernet headers The default settin...

Page 15: ...ultiple of 10 Number of Simultaneous Calls Defines the number of RTP test calls to execute simultaneously for a single test The default value for this setting is 2 Measurements for each call can only...

Page 16: ...l 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 RTP Ports Range End Defin...

Page 17: ...llowing process 1 Double click the icon in the task bar 2 Ensure the IP address in the ExpertNet Controller field is the IP address of the PC with the controller installed 3 In the Local Command Port...

Page 18: ...lled running and configured RTP tests will automatically be created for these endpoints as they register if the Automatically Create RTP Tests option is selected in Step 6 of the Wizard These RTP test...

Page 19: ...Voice Payload Size Defines the Voice Payload size of the RTP packets of a test call in milliseconds Must be a multiple of 10 Number of Simultaneous Calls Number of equivalent VoIP calls for a selecte...

Page 20: ...r network are SNMP enabled and you know their read community strings the best option is to let the ELAT Controller discover network paths automatically To do so select Discover Ping Tests from the Net...

Page 21: ...Traceroute The Controller collects Round Trip Time RTT data from ping paths by trace routing every path periodically This information is displayed in the Path Details View The SNMP statistics are col...

Page 22: ...TP test All of the columns contain data when the test is added When a test is verified or run the results will be entered in the last three columns Delay Loss and Jitter The test Status may change dep...

Page 23: ...the type of tests For RTP tests this can say G 711 or G 729 representing the different codecs For ping tests this will be ICMP or UDP Test Status Indicates the last known state of a test RTP tests can...

Page 24: ...20 and on the backward link it found packets with the setting 30 and 0 This indicates that the network isn t preserving the DSCP value Number of calls Indicates the number of calls that will be run s...

Page 25: ...have firewall and port related issues when the tests are started Any failures should be investigated before commencing the week long measurements Appendix B Firewall Configuration for information on c...

Page 26: ...l cause a flow of RTP packets through the network and collect QoS data In addition each SNMP contactable router will be polled to collect CPU and interface utilization To start collecting RTP Ping and...

Page 27: ...ated Click OK to upload If the automatic upload fails for any reason you can you the Upload button to try again or email the dataset to the ELAT support team elatsupport avaya com Automatic Upload Not...

Page 28: ...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 represe...

Page 29: ...ord All reports contain the following sections Introduction to Avaya Basic Assessment report Executive Summary Background on data Series of charts Performance summary entire network Overview per path...

Page 30: ...ment Tool User Guide 28 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 ov...

Page 31: ...ExpertNet Lite Assessment Tool User Guide 29 QoS Graphs Separate graphs displaying Delay Jitter and Loss are available for each target...

Page 32: ...P Data If SNMP access to routers is enabled and read community strings are available graphs displaying performance criteria will also be available 1 1 This feature is only available for Cisco Routers...

Page 33: ...ExpertNet Lite Assessment Tool User Guide 31...

Page 34: ...ay not discover the desired subnet because either there is no read SNMP community string available for any of the devices along the path or the sub network is out of scope limit The ELAT Controller co...

Page 35: ...work as long as the default gateway from the Controller PC is reachable and SNMP enabled Q Is there a rule to select the edge devices when run in Target mode A The rule is to select any IP device that...

Page 36: ...lts 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 prefer...

Page 37: ...to rerun ELAT with the same customer at the same location Will the first dataset be overwritten A No We do not allow or support overwriting datasets All datasets are considered unique and stored separ...

Page 38: ...value in the config xml file Does that tag UDP packets Is this one direction or both A The ELAT Controller has the ability to tag UDP packets as diffserv These packets are outbound only the response...

Page 39: ...fic Simulator would need to re register Q Imported paths fail to run properly during a measurement run A Whenever paths are imported it is important to do a verification test to ensure that the RTP Tr...

Page 40: ...aste 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 If there is an existing file with the same name...

Page 41: ...TE To find the IP address of the PC open the Control Panel Network Connections LAN Area Connection dialog and open the Support tab 3 On the page that displays click the link to download the test agent...

Page 42: ...Next 9 Click Close The machine s network connection will be momentarily disrupted This disruption will typically take 30 seconds at most 10 A window displays giving you the option to reboot now or la...

Page 43: ...the Don t allow exceptions tick box is un checked in the General tab To configure McAfee Personal Firewall 1 Open McAfee Personal Firewall 2 Select Personal Firewall Plus along the left side 3 Click V...

Page 44: ...nter C Program Files Avaya Traffic Simulator trafficSimulator exe Action Allow Ports All ports 7 Click Save To configure Tiny Personal Firewall 1 Open Tiny Personal Firewall 2 Go to the Administrator...

Page 45: ...listed The ELAT server has functionality to generate a Rich Text Format RTF report with charts In the default functionality all paths or targets are selected for inclusion in the report As of ELAT 3...

Page 46: ...d 1 Select the Generate link in the Custom Report column on the View Datasets page 2 You will be presented with a graphical representation of the paths 3 Select or deselect the checkboxes next to path...

Page 47: ...a customer network is ready to support VoIP calls It forexample can simulate higher call volumes than the ExpertNet Lite Assessment Tool ICMP Internet Control Message Protocol IP Internet Protocol MIB...

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