Avaya ELAT User Manual

ExpertNet Lite Assessment Tool - User 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.

ELAT is a software application designed to gather information from an IP network. The 
data gathered is used to produce a Network Readiness Assessment report. It is 
designed to run for an extended period of time (usually 5 days), in order to see trends 
in network performance. The data is summarized graphically and can be included in 
the report.

Three types of queries are used to perform the measurements: RTP tests, ping probes 
and SNMP GET 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 ICMP. On some networks, 

the default UDP protocol may not work. (For example, a firewall may be 

configured to block traffic to certain ports.) In such cases, the user can switch 

the protocol to ICMP.

●       

ELAT Controller supports SNMPv1 and SNMPv2 protocols. It collects processor 

and layer-3 interface utilization variables from devices on network paths. For the 

Controller to be able to retrieve SNMP data, it must be configured with a list of 

SNMP community strings.

The ELAT Controller collects Round Trip Time and One Way Delay measurements along 
network paths. Network paths can be entered manually by the user, or discovered 
automatically. To discover paths automatically, the Controller employs, transparently 
to the user, a bundled ExpertNet Discovery Tool. The EDT tool discovers network 
topology in a scope configured by the user.