Endace Measurement Systems Limited
http://www.endace.com
EDM01.05-12r1 DAG 3.7T Card User Manual
Copyright, all rights reserved.
21
Version 6. 22 September 2005.
3.8.4 Sub-channel Raw Connection ['sr']
Description
A sub-channel RAW connection with HDLC firmware is an HDLC
connection which occupies 1, 2, or 4 conectutive bits within a timeslot on
one interface. This line would look like this:
s bit_offset ifc_num ts_num ts_mask
Captures using this configuration produce records with
erf type 8
.
The
bit_offset
field is always 0. So far, we have no use for it. In order
to configure a connection on interface 6, timeslot 2, bits 0-3 would look
like this:
s
0
6
2
0
0
0
0
1
1
1
1
3.9 Configuring ATM Channels
Description
The
dagchan
tool is used to define the physical channels for the DAG
3.7T card. It reads a channel configuration file and then creates each of the
channels defined in the file.
The default operation of
dagchan
is to delete all existing channel
definitions on the board, and then add the new channel definitions.
An alternative mode is to use the ‘
-r
’ option and preserve the channel
definitions on the board and add the new channel definitions to them.
The
dagchan
tool can be used to configure the DAG 3.7T card if it is
running ATM firmware.
Configuration
file
The configuration file is used to configure connections, each line in the
file is a different command. Each line starts with a letter, followed by a
sequence of 1 or more numbers. The following letters are valid line
beginnings:
•
= simple connection
•
= Delete connection
•
= hyper-channel connection
•
= line connection
•
= RAW line connection
•
= sub-channel connection
•
= RAW line connection
•
= RAW hyper-channel connection
•
= RAW sub-channel connection
•
= RAW channel connection
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