ZyXEL Communications SAM1316-22, User Manual

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Chapter 59 DSL Commands
SAM1316-22 User’s Guide
394
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.
59.2.4 DSL Port 15 Minute Performance Command
Syntax:
ras> statistics shdsl 15mperf <portlist> [count <0..96>]
where
Table 108 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>.