Finisar Surveyor, User Manual

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3-18
Surveyor
User’s Guide
File Formats
The following file formats are supported in Surveyor:
.HST Extension – Capture Files
File extension for capture data files. The .HST file contains formatting information
and a list of .CAP files that contain the actual capture data. All new captures made
by Surveyor are saved as .HST files.
The .HST file is a master capture management file that organizes large captures
(>10M) into multiple capture (.CAP) files. When the .HST capture file is opened or
when a capture buffer is opened, a histogram is displayed and the first segment of
the capture (.CAP file) is decoded. The histogram is used to navigate through the
multiple .CAP files as needed.
.CAP Extension – Internal Capture Files
File extension for capture data files used internally by Surveyor. Capture file format
is compliant with RFC 1761, referred to as "Snoop" format. However, capture files
include extensions that expand the information provided by snoop format. .CAP
files are not viewed directly in this version of Surveyor, but are internal files used
within .HST files. Older .CAP files opened in Surveyor are converted to the new
format and are then available as .HST files.
.NAM Extension – Name Table Files
Name table files contain equivalencies between symbolic names and hexadecimal
names. The name table file format is identical to
.ini
file format. The default
hosts.nam
file contains names associated with well-known hexadecimal repre-
sentations. For example,
BROADCAST=C000FFFFFFFF
.
.CFD Extension – Capture Filters
Capture filter files contain a set of instructions internal to Surveyor that tells the
software to save only a subset of the all the information on the network.
.DFD Extension – Display Filters
Display filters files contain a set of instructions internal to Surveyor that tells the
software to display only a subset of previously captured data. View filters are essen-
tially the same as capture filters, except that they use capture files (
.CAP
files) as
input rather than data being captured from the network.
.TSP Extension – Transmit Specifications
Transmit specifications contain a set of instructions internal to Surveyor that will
generate packets. You can create transmit specifications and generate traffic if you
are running Packet Blaster plug-in.