ZyXEL Communications IES-708-22A - Manual (Page 338)

Chapter 53 DSL Commands
IES-708-22A User’s Guide
338
These counters display line performance data that has been accumulated since the system
started and since the last connection was established. In the list above, STUC refers to errors
detected by the STU-C, and STUR refers to errors detected by the STU-R.
The following table explains these counters.
53.2.5 DSL Port 15 Minute Performance Command
Syntax:
ras> statistics shdsl 15mperf <portlist> [count <0..96>]
where
This command displays line performance statistics for the current and specified number of
previous 15-minute periods.
Table 96 DSL Port Lineperf Command Counters
LABEL DESCRIPTION
es The number of Errored Seconds that have occurred on this DSL port. An
Errored Second is defined as a count of 1-second intervals during which one or
more CRC anomalies are declared and/or one or more LOSW defects are
declared.
ses The number of Severely Errored Seconds that have occurred on this DSL port.
A Severely Errored Second is defined as a count of 1-second intervals during
which at least 50 CRC anomalies are declared or one or more LOSW defects
are declared. (50 CRC anomalies during a 1-second interval is equivalent to a
30% errored frame rate for a nominal frame length.)
crc The number of CRC anomalies that have occurred on this DSL port.
losws The number of Loss of Sync Word Seconds that have occurred on this DSL
port.
uas The number of UnAvailable Seconds that have occurred on this DSL port. An
Unavailable Second is a count of 1-second entrails for which the SHDSL line is
unavailable. The SHDSL line becomes unavailable at the onset of 10
contiguous SESs. The 10 SESs are included in the unavailable time. Once
unavailable, the SHDSL line becomes available at the onset of 10 contiguous
seconds with no SESs. The 10 s with no SESs are excluded from unavailable
time.
segment anomaly The number of Segment Anomalies that have occurred on this DSL port. A
segment anomaly indicates that a regenerator operating on a segment has
received corrupted data and therefore the regenerated data is unreliable.
segment defect The number of Segment Defects that have occurred on this DSL port. A
segment defect indicates that a regenerator has lost SHDSL synchronization
and therefore the regenerated data is unavailable.
<portlist> = You can specify a single DSL port <1>, all DSL ports <*> or a
list of DSL ports <1,3,5>. You can also include a range of ports
<1,5,6~8>.
[count <0..96>] = Specify for which 15-minute interval (0~96) you want to
display performance statistics. 0 is the current 15 minutes.