ZyXEL Communications IES-1248-51, Руководство пользователя

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IES-1248-51 User’s Guide
Chapter 49 ADSL Commands 323
These counters display line performance data that has been accumulated since the system
started. In the list above the definitions of near end/far end will always be relative to the ATU-
C (ADSL Termination Unit-Central Office). Downstream (ds) refers to data from the ATU-C
and upstream (us) refers to data from the ATU-R. “I” stands for interleaved and “ni” stands for
non-interleaved (fast mode).
A block is a set of consecutive bits associated with the path; each bit belongs to one and only
one block. Consecutive bits may not be contiguous in time.
49.2.5 15 Minute Performance Command
Syntax:
ras> statistics adsl 15mperf <portlist> [count <0..96>]
where
This command displays line performance statistics for the current and previous 15-minute
periods.
Table 76 Line Performance Counters
LABEL DESCRIPTION
nfebe
The Number of Far End Block Errors (Cyclic Redundancy Check).
ncrc
Near end Cyclic Redundancy Check errors.
nfecc
The Far End blocks repaired by Forward Error Correction.
nfec
The Near End blocks repaired by Forward Error Correction.
init
The number of link ups and link downs.
es
The Number of Errored Seconds. This is how many seconds contained at least
one errored block or at least one defect.
ses
The Number of Severely Errored Seconds. This is how many seconds contained
30% or more errored blocks. This is a subset of n-es.
uas
The Number of Unavailable Seconds.
lpr
The Number of times a Loss of Power (on the ATUR) has occurred.
<portlist> =
You can specify a single ADSL port <1>, all ADSL ports <*>
or a list of ADSL ports <1,3,5>. You can also include a range of
ports <1,5,6~10>.
[count <0..96>] =
Specify for which 15-minute interval (0~96) you want to
display performance statistics. 0 is the current 15 minutes.