Trace Files; Tr Terf - Endace DAG 9.2X2 User Manual

EDM01-36v10 DAG_9.2X2_Card_User_Guide - Using your DAG card

Trace files

You can use
dagflood
the type matching the current link configuration.
For detailed information on using
When you use DAG cards with multiple ports, ensure all ports referred to by the trace file are active.
This ensures the
Check the interface status output for the DAG card and ensure the link status for all required destination
ports is active. See
For further information on using
from Endace Customer Support at https://support.endace.com/.
In addition the length of the ERF records to be transmitted must be a multiple of 64-bits. You can
configure this when capturing packets for later transmission by setting 64-bit alignment using the
dagconfig align64
If packets have been captured without using the
they can be transmitted by using
dagconvert -v -i tracefile.erf -o tracefile.erf -A8
Alternatively if you are unsure if a trace file is 64-bit aligned you can test the file using
as shown below:
dagbits -v align64 -f tracefile.erf
If you do not have any ERF trace files available, you can use
simple traffic patterns. This allows the DAG 9.2X2 card to be used as a test traffic generator.
For further information on using
Endace Customer Support at https://support.endace.com/.

TR TERF

For a description, see
Selectable CRC length
TR-TERF can be optionally configured to strip the CRC of an incoming ERF stream, to allow the
retransmitted stream to calculate and add a CRC. There are some situations where this option may be
useful.
Situation 1 (Ethernet)
The ERF stream was generated without a CRC.
In this case, you should configure TR-TERF not to strip the last 32 bits of the packet as there is no CRC
in place, and configure the MAC to add a hardware-calculated CRC. This has the effect of reducing the
burden of calculating a CRC in the software.
Ex am ple
dagconfig noterf_strip tx_crc
48
to transmit ERF format trace files, providing the files contain only ERF records of
dagflood,
traffic is not blocked when trying to delivering data to an inactive port.
dagflood
Viewing the DAG card statistics.
dagflood
command.
dagconvert
daggen
Timed Release TERF (TR-TERF)
EDM04-03 dagflood User Manual
refer the
(page 34)
EDM04-03 dagflood User Manual
please refer to the
option you can convert the trace files so that
align64
(page 43) as shown below:
daggen
EDM04-06 Daggen User Guide
please refer to the
(page 7).
©2010 - 2012 Endace Technology Ltd. Confidential - Version 10 - May 2012
.
dagbits
to generate trace files containing
available from
available
(page 40)