Network Instruments GigaStor 114ff User Manual

Page 66

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Configuring the GigaStor through the Control Panel
Chapter 4 GigaStor Control Panel

66

rev. 1

Start/Stop Packet Capture marker
frames

When checked, saved packet capture buffers will include markers
that timestamp when packet captures were started and stopped.

Wireless Channel Change

When checked, saved packet capture buffers will include markers
that show what channel was currently being listened to. This is
useful if you are using Wireless Site Survey to scan channels.

Packet Sampling

Packet sampling applies to the control panel statistical displays, not
saved packets. On probes connected to highly-saturated networks
(especially multi-port probes), sometimes it is desirable to adjust
the rate of statistical indexing to conserve probe processing and
storage resources. The default (and recommended) setting is for
Observer to automatically scale back the packets it uses to update
the console display based on system load. Alternatively, you can
specify a Fixed Sampling Ratio to consider when updating the
GigaStor Control Panel Charts and statistical displays.

Capture Indexing Information
Maximums

Depending on what kinds of information you are interested in
tracking, you can conserve probe processing and espeically storage
resources by only indexing the information that is useful to you.

Of special note is the “Track statistics information per physical port”
option. When selected, causes the GigaStor to index the data it
collects by Gen2 capture card physical ports. You can then display
GigaStor Control Panel statistics by physical port (see the next
bullet item).

Display Indexing Information
Maximums

Depending on what kinds of information you are interested in
tracking, you can conserve probe processing and resources by only
indexing the information that is useful to you.

Collect and Show GigaStor indexing
information by

Depending on what kinds of information you are interested in
tracking, you can conserve probe processing and storage resources
by only indexing the information that is useful to you.

Track statistics information per
physical port

When selected, causes the GigaStor to index the data it collects by
Gen2 capture card physical ports. You can then display GigaStor
Control Panel statistics by physical port (see the next bullet item).

Use physical port selections to filter
statistics (requires per port tracking
information)

If the previous check box is selected, you can choose this option to
display, within the GigaStor Control Panel, statistics sorted by Gen2
Capture Card physical port. This is useful, for example, when you
want to troubleshoot the individual links without having to load
the capture buffer by clicking Analyze.

Stop capture when disk is full

When activated, the GigaStor stops capturing packets when the
disk array is full. The default behavior is to use circular (i.e. FIFO)
disk writes, causing the oldest buffer files to be overwritten as
newer traffic is captured.

Auto-update GigaStor chart on
statistics tab or selection change

When selected, causes the listed actions to have the same effect as
clicking the Update Chart/Statistics buttons.

Keep focus on GigaStor when
running Forensic Analysis and
creating a decode

Keeps the focus in the GigaStor Control Panel instead of switching
to the decode pane.

Update display during statistics
processing in 30 second intervals

When selected all charts will received updates in 30 second
intervals when processing statistics.

Table 5 GigaStor Options tab

Field

Description

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