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4. Monitoring
4-6 February 2003 8335-A2-GB20-70
DSL Link Performance Summary Screen – Model 8335 B-B-D
Shows performance statistics for the DSL link at the physical layer.
Enter a port name (dsl1–dsl16) to see statistics for the current 15-minute period, previous
15-minute period, previous 1-hour period, and current day.
Operating Speed
–
The DSL line speed in kbps.
Down Margin – The margin reported by the endpoint, in dB. The larger the number, the
higher the link’s tolerance to noise.
Down Attenuation – The signal attenuation reported by the endpoint, in dB. Generally,
the larger the number, the longer the loop.
Up Margin – The margin detected by the line card, in dB. The larger the number, the
higher the link’s tolerance to noise.
Up Attenuation – The signal attenuation detected by the line card, in dB. Generally, the
larger the number, the longer the loop.
Current Link Up Time – The amount of time since the link became operational, in days,
hours, minutes, and seconds.
Card Up Time – The amount of time since the line card was last reset, in days, hours,
minutes, and seconds.
Link Down Count – The number of times the DSL link has gone down during the
specified period.
Current Interval Counter – The amount of time elapsed in the current 15-minute interval.
DSL Link Performance Summary Screen – Model 8355 B-B-D
Shows performance statistics for the DSL link at the physical layer.
Enter a port name (dsl1–dsl24) to see current statistics.
CPE Vendor ID
–
The manufacturer of the endpoint.
ATU-R/ATU-C Margin – The noise margin reported by the endpoint (ATU-R) or the line
card (ATU-C), in dB. The larger the number, the higher the link’s tolerance to noise.
ATU-R/ATU-C Attenuation – The signal attenuation reported by the endpoint (ATU-R) or
the line card (ATU-C), in dB. Generally, the larger the number, the longer the loop.
ATU-R/ATU-C Transmit Power
–
The transmit power level reported by the endpoint
(ATU-R) or the line card (ATU-C), in dB.
Current Link Up Time – The amount of time since the link became operational, in days,
hours, minutes, and seconds.
Card Up Time – The amount of time since the line card was last reset, in days, hours,
minutes, and seconds.
ATU-R/ATU-C Current Tx Speeds
–
The current transmit DSL line speed in kbps for the
endpoint (ATU-R) and the line card (ATU-C).
ATU-R/ATU-C Previous Tx Speeds
–
The transmit DSL line speed in kbps for the
endpoint (ATU-R) and the line card (ATU-C) at the last rateChange trap, or if no
rateChange trap has occurred, at line initialization.
ATU-R/ATU-C Attainable Speeds
–
The maximum attainable DSL line speed in kbps for
the endpoint (ATU-R) and the line card (ATU-C) for the current configuration and line
conditions.
ATU-R/ATU-C Relative Capacity
–
The operating speed for the endpoint (ATU-R) and
the line card (ATU-C) relative to the attainable speed expressed as a percentage for the
data path.
Table 4-2. Monitoring – Physical Ports (2 of 6)