Endace Measurement Systems.
http://www.endace.com
EDM01.05-10r1 DAG 4.3S Card User Manual
16
Revision 6. 22 September 2005.
4.4 DAG 4.3S Card Configuration Options
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Description
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master
set card to SONET clock master
slave
set card to SONET clock slave
crc16
PoS CRC16 link
crc32
PoS CRC32 link
[no]crcstrip
Don’t include CRC in ERF record or wlen count
(DAG 4.2 compatible behaviour).
slen=X
capture X bytes of packet data.
[no]varlen
dis/enable variable length capture. Otherwise
record length padded to slen. Defaults to varlen.
short=X
Set minimum expected packet size to X
long=X
Set maximum expected packet size to X
mem=X:Y
Configure memory allocated to streams 0, 1, …
[no]align64
Generate ERF records with 64-bit alignment
[default 32-bit]
Inspect
interface
statistics
Once the card has been configured as expected, the interface statistics
should be inspected to see if the card is locked to the data stream.
dag@endace:~$ dagfour -d dag0 –si
The tool will display a number of status bits as they have occurred since
the last time read. In our example, the interval is set to one second via the
-i
option.
Status bits
display
LoS
Loss of signal.
If set, this indicates that there is either no signal at
the receiver or the optical signal strength is too low
to be recognized.
OoF
Out of frame.
If set, the section overhead processor is not locked
to the SONET stream.
LoF
Loss of frame.
If set, oof had been asserted for more than 3
milliseconds.
LAIS
Line alarm indication signal.
If set indicates a SONET/SDH remote APS error.
LRDI
Line remote defect indication.
If set indicates a SONET/SDH remote APS error.
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