User manual

4-17

Chapter 4

Analyze Network

Traffic Generate

Select the TRAFFIC GENERATE button in the Bottom Area. The Traffic

Generate Screen displays first the Remote IP address to where the

frames are sent. Then it displays the size of the packets being sent with

how many Transmitted and Received frames. If there are any lost packets

then the LANEXPERT displays then number of frames lost with the

percentage. Lastly, the remaining time in seconds will be displayed along

with the percentage of the total time left.

If you configure for BROADCAST – that means that the LANEXPERT

does not expect there to be a LANEXPERT port at the remote end.

If the configured IP of the remote end actually exists, data is

simply sent to the configured remote IP in the normal manner.

This means traffic is not broadcast all over the network but just

to that one IP. This is useful to “stress” a computer without

stressing the entire network.

If the configured IP of the remote end does not exist (it does not

respond to an ARP) then data is broadcast all over the users

network with that destination IP but a broadcast MAC is used.

This is useful to “stress” an entire network.

Each port has only one receiver and one generator. A LANEXPERT can

use both receivers and both generators at the same time. Traffic

Generator guidlines:

In INLINE mode you might think there were two ports – there is

really only one from the traffic generate point of view.

A port can be a local generator (sending traffic to somewhere

else) and be a traffic sink to another generator at the same time

– but both the remote generator and the remote sink must be the

same LANEXPERT.

A port cannot be generating traffic in the REMOTE->LOCAL di

rection and receive traffic from another LANEXPERT in its’

LOCAL->REMOTE direction (this requires two traffic sinks on

the same port), or vice versa (that would require two generat

tors).

The LANEXPERT will react to pause frames, and slow down the traffic

generate rate. When broadcasting, the remote computer (if it exists) or the

entire network (if it doesn’t) will slow down the LANEXPERT– you can

read the “AVG RATE” data on the traffic generator screen to see what the

maximum receive rate for the specific computer or the entire network is.