Sniffer Adaptive Application Analyzer: Adaptive Mode ... - NetScout

EARLY FIELD TRIAL Chapter 8
Table 8-8. Display Setup Options
Display Setup > General Options
192 Sniffer Adaptive Application Analyzer
Display Setup Tab Settings for...
Decode Font Click here to change font type, style, and
size for the text in the Decode display.
Packet Selection Click here to specify whether or not you
would like a new tab created when you are
filtering in the Decode > Summary pane
(Decode tab) or mark the selected packets
in the Decode > Summary pane. See
Display Setup > Packet Selection Options
on page 195.
The Display > Display Setup > General tab contains options that can
improve decode performance when working with large buffers or trace
files.
In previous releases, when decoding a trace file or buffer, protocol
interpreters would start by performing a prescan of the entire trace or
buffer. For large trace files and buffers, this process could take a long
time.
To address this issue, Sniffer Adaptive Application Analyzer provides the
option of a windowed approach. Using the windowed approach, Sniffer
Adaptive Application Analyzer starts by prescanning a user-specified
portion of the trace file or buffer. When moving from window to window
within the buffer or trace file, the previous prescanned information will
be cleared from memory so the new window can be scanned. This way,
decoded information is available more quickly.
You specify both whether to use the windowed approach and the size of
the window to be used in the Display > Display Setup > General tab.
Set the reassembly options as follows:
Reassemble entire trace file— Enable this option if you would
like to reassemble the entire trace file or buffer before displaying
decoded data. Disable this option if you would like to reassemble
the trace file in “chunks.”
Reassembly window size — Use this option to specify the size
(in terms of the number of frames) of the “chunk” to be
reassembled and displayed. As you move between chunks, one
chunk is cleared out and scan another is scanned.
The default and minimum value for the Reassembly window size
is 5000. This value is configurable, but it is recommended that you
edit this value only if it is absolutely necessary.