Deployment Guide

For example, the TCP download test transfers by default 2 megabytes of data that does not take long. The
amount of data is exceptionally high for data transfer in a logistics environment but on the other hand in
office environment transfer of this size is relatively low. The test parameter should be adjusted, either to
simulate typical transfer or to save the bandwidth while keeping the transfer size high enough to give
measurements out of the network.
14.6.2 Eye – Carat/Carat – Eye
From
To
Medium
Traffic
motivator
Volume
estimate
Major factor
Carat
Eye
Ethernet
Configuration
actions and
manual testing
by users.
< 1 kB/minute.
The binary
protocol for
requests is
volume-efficient.
Duration of one test varies from
a few seconds to almost minutes
per request depending on the
test type.
Eye
Carat
Ethernet
Responses to
client.
100 kB /minute.
Spectrum Analysis and MOS
test most probably contain
significant amount of data.
The data transferred in most cases is results of analysis, sometimes raw measurements.
Naturally the number of Eyes is directionally proportional the traffic load as each Eye connection are
independent and concurrent. One single Eye typically executes a test in one minute in the average.
However, there are tests that finish in 10 seconds (practical minimum) and few tests run few minutes.
The communication protocol is both minimal and binary so the traffic from Carat to Eye is very economic.
The measurement result minimum is around 100 bytes in one message and the top range is the spectrum
measurement (not available in all configurations) that returns approximately 300 times a 50 byte result unit.
7signal Solutions Inc., 6155 Rockside Road, Suite 110, Independence, Ohio 44131, USA,
216-777-2900, [e-mail], www.7signal.com