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8-1
Chapter 8
8 Transmit Specification
Packet Blaster plug-in allows you to generate packets and send them onto a net-
work. This can be used to force the network to respond to known or suspected prob-
lem conditions or loads. Transmitted data can answer “What If?” questions about
the network or particular network resources.
To transmit data, you first set up a Transmit Specification. After the Transmit
Specification is loaded to a module, click on the
Start button to begin transmit. You
can also transmit a previously-captured data file (capture file).
You can transmit the contents of a capture file. Data previously collected in the
capture file can be loaded to a module and sent to the network.
Using THGm, you can transmit packets at full network speed or faster. This allows
you to set up high traffic conditions and see how the network performs. Surveyor
can also transmit a variety of user-defined packet contents to see their effect on the
network.
With multiple modules, transmitted data can be captured by another analyzer card.
You can use the capture and view features in the Surveyor software to analyze the
results, all from the same PC.
Although you can transmit using Portable Surveyor 10/100 Ethernet Analyzer Card
or NDIS modules, these devices are not always accurate transmit devices. The
actual rate of transmission for these devices is not predictable.
Transmit Specifications
An example Transmit Specification dialog box is shown in Figure 8-1 on page 8-2.
For additional views of this dialog box, see the Transmit Specification examples at
the end of this chapter. To bring up the
Transmit Specification dialog box, press the
button from the
Detail View toolbar.