EDM01-36v10 DAG_9.2X2_Card_User_Guide - Using your DAG card
©2010 - 2012 Endace Technology Ltd. Confidential - Version 10 - May 2012
37
Using your DAG card
Introduction
This chapter describes how to complete the following operations for a DAG card:
•
Basic data capture
(page 37) - For Enhanced Packet Processing v2 refer to
EDM04-31 Enhanced
Packet Processing v2
.
•
Viewing captured data
(page 40)
•
Converting captured data
(page 43)
•
Using third party applications
(page 47)
•
Transmitting captured data
(page 47)
Basic data capture
dagsnap
is a software utility used to write to disk the data captured from a DAG card.
Data is collected in Extensible Record Format (ERF) which can then be viewed using
dagbits
, or
converted to other formats using
dagconvert
.
When capturing high speed data Endace recommends you use
dagsnap
, see
Capturing data at high
speed
(page 39).
For further information on the software utilities see:
•
dagsnap
(page 38)
•
dagbits
(page 40)
•
dagconvert
(page 43)
Starting a capture session
To start the capture session, type the following at the prompt:
dagsnap -dX –v -o tracefile.erf
(Where X is the device number of the DAG card you want to configure).
Note:
You can use the
-v
option to provide user information during a capture session although you may want
to omit it for automated trace runs.
By default,
dagsnap
runs indefinitely. To stop, use
CTRL+C
. You can also configure
dagsnap
to run for
a fixed time period then exit.
