Endace DAG 7.1S, User Manual

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EDM 01-17 DAG 7.1S Card User Guide
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:~$ dagconfig -d dag0 –s1
Status Bits Display
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
-s
option.
los
Multiplexor 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.
b3,b2,
b1
Bit interleaved parity byte error.
These bits indicate a problem as reported by SONET B3, B2 and B1
overhead octets. If any of these bits are set, the card connection to
the link is impaired.If oof and lof indicators are set along with b's,
the OCx carrier configuration is incorrect. Otherwise it indicates a
signal problem related to either low light levels reaching the optical
receivers, or true SONET-level errors as reported by SONET
equipment operating the link to be monitored.
lop
Loss of pointer.
If set the pointer processing logic has not locked to the SONET
frame. It may indicate incorrect OC-3 vs. OC-12 setting.
oof
Out of frame.
If set, the section overhead processor is not locked to the SONET
stream. It may indicate incorrect OC-3 vs. OC-12 setting.
lof
Loss of frame.
If set,
oof
had been asserted for more than 3 milliseconds.
los
Loss of signal
If set the framer has not detected any 0 to 1 transitions for 20
microseconds.
c2
Path signal label.
Reflects the content of the SONET C2 overhead octet. Typical
settings are:
13 ATM
16 PPP w/SPE scrambling
CF PPP wo/SPE scrambling
Changing values for this field indicate a SONET level error.
lcd
Loss of cell delineation.
If set the ATM state machine has no lock onto the ATM cell stream.
sync
ATM cell sync.
If set indicates the ATM cell engine has locked to ATM cell stream.
rei
Remote error indicator.
©2006 21 Version 2: May 2006