Specifications

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Cisco 600 Series Installation and Operation Guide
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Chapter 3 Configuration Procedures for the Cisco 627
Interpret Statistics
To retrieve statistics:
Step 1
To see a list of variables, enter:
cbos# stats
Step 2
To display specific statistics, enter:
cbos# stats variable from list
Step 3
To exit the CBOS, enter:
cbos# quit
Interpret Statistics
Use the
stats atm0
and
show interface atm1
commands to retrieve key statistics
regarding ADSL performance. These statistics are:
•
CRC Errors—Number of CRC errors. CRC errors might occur when the ATM
traffic rate is faster than the ADSL rate, causing ATM cells to be dropped.
This corrupts the AAL5 logical packets. CRC errors might also be an
indication of excessive noise on the DSL line.
•
Errored Seconds—Number of Superframe CRC errors. If this field is
incremented, the user data path is encountering uncorrected errors.
•
Rx’ed Blocks—Number of blocks received by the unit. A block is 250
milliseconds. This statistic is reset whenever the modem trains.
•
Tx’ed Blocks—Number of blocks transmitted by the unit. A block is 250
milliseconds. This statistic is reset whenever the modem trains.
•
Corrected/Uncorrected Blocks—The modem can correct a block containing
errors. If the block correction fails, the block is counted as an uncorrected
block and discarded.
•
Attenuation—Difference in decibels (dB) between the power level received
at the near end versus the power level transmitted from the far end. The
attenuation range is 0 to 63 dB in 1 db increments. Attenuation is calculated
every 10 seconds.