Roundtrip between @[HOSTS_TITLE] hosts
Introduction
In this page roundtrip values [ms] between the several @[HOSTS_TITLE]
hosts are given as function of the time. In main terms this page contains the
following attributes:
- A control frame, which can be used to deliver
various views at the net test data.
- A table frame where the data are shown.
Both frames are discussed in the next sessions.
In the last section some short remarks are ventilated about the measurement
procedure.
This page requires minimal Netscape 4, Internet Explorer 4 or
HotJava 3.
Control frame
The top control frame can be used to select the desired net test data. It is
placed above all tables. The functionality of the control frame is for all
tables more or less comparable. See also the
help page for more information. In this page
the procedure is also discussed for
loading the net test data from the Web server.
Table frame
In the bottom table frame, the table with roundtrip values is shown. Going from
above to below the following attributes are found:
- The link in the sentence "Select ping value: ..."
can be used to select the type of the roundtrip value. The emphasized type
denotes the current type. The following ping value types can be selected:
- min
- Display the minimum ping values.
- avg
- Display the average ping values.
- max
- Display the maximum ping values.
- all
- Display all the ping values: these are the value types,
described above, using the format:
min / avg / max.
- lost
- Display the percentage package lost
.
- The link in the sentence "Select color scale: ..."
can be used to select the type of color scaling. The emphasized type denotes
the current type.
- In the table the roundtrip values are specified between the host, which can
be found in the title of the table, and between the other hosts.
- The hyperlinks in the upper title row of the tables are leading to the table
with all roundtrip values from the related host.
- The hyperlinks in the column entitled
are leading to the page where an overview is
displayed of all net test values at the time denoted by the hyperlink.
- Below the table with roundtrip values, the table with the used color scaling
can be found.
- Below the color scaling table, an input field is situated which can be
used to adjust the number of rows in the table. This will be done after
clicking the "Set" button.
Measurement procedure
The roundtrip measurements are performed with the standard program
ping
. The following measurement parameters are used:
- Ping packet size: @[PING_PACKET_SIZE] bytes.
- Total # measurements: @[PING_COUNT].
- The first @[PING_SKIP] measurements are not used.
- Ping measurements are only accepted when @[PING_ACCEPT] % of the
non-skipped measurements are indeed received.