Endace Measurement Systems.
http://www.endace.com
EDM01.05-10r1 DAG 4.3S Card User Manual
38
Revision 6. 22 September 2005.
7.1 Data Formats
, continued
Data format
The following is an overview of the data format used.
Data Format
Description
type:
This field contains an enumeration of the frame
subtype. If the type is zero, then this is a legacy
format.
0: TYPE_LEGACY
1: TYPE_HDLC_POS: PoS w/HDLC framing
2: TYPE_ETH: Ethernet
3: TYPE_ATM: ATM Cell
4: TYPE_AAL5: reassembled AAL5 frame
5: TYPE_MC_HDLC: Multi-channel HDLC
frame
6: TYPE_MC_RAW: Multi-channel Raw link
data
7: TYPE_MC_ATM: Multi-channel ATM Cell
8: TYPE_MC_RAW_CHANNEL: Multi-
channel Raw Link Data.
9: TYPE_MC_AAL5: Multi-channel AAL5
frame
10: TYPE_COLOR_HDLC_POS: HDLC POS
like TYPE_HDLC_POS, but with the
LCNTR field reassigned as COLOR
11: TYPE_COLOR_ETH: Ethernet like
TYPE_ETH, but with the LCNTR field
reassigned as COLOR
flags:
This byte is divided into 2 parts, the interface
identifier, and the capture offset.
1-0: Enumerates capture interface 0-3
2: Varying record
3: Truncated record [insufficient buffer space]
4: RX Error [link layer error]
5: DS Error [internal error]
7-6: Reserved
Rlen: record length
Total length of the record transferred over PCI
bus to storage.
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