'Summary Period' ATM Port Statistics

The following statistics are collected for the ATM Port object.


Parameter

Type of statistic

Description
Port inactive count Counter Number of times that the port has gone inactive during the summary period.
Number of SONET Loss of Frame errors Counter Number of SONET Loss of Frame errors that occurred during the summary period.
Number of SONET Loss of Signal errors Counter Number of SONET Loss of Signal errors that occurred during the summary period.
Number of SONET Loss of Pointer errors Counter Number of SONET Loss of Pointer errors that occurred during the summary period.
Number of corrupted cells received Counter Number of corrupted cells received within the summary period. This could indicate that there is a problem with the clocking, or that the adaptor is receiving the wrong type of data.
Number of dropped CAS cells Counter Number of received CAS cells that were dropped, during the summary period, because the FIFO was full.
Number of transmitted cells Counter Number of cells transmitted during the summary period.
Number of received cells Counter Number of cells received during the summary period.
Number of receive overruns Counter Number of receive overruns during the summary period. (The actual number of overruns may be higher than reported if more than 100 occurred in any 5-minute period.) Large values could indicate that the ATM network jitter is too high. This can be compensated for by using a higher Cell Delay Variation (CDV) when configuring subscribers. Note, however, that there is a quality trade-off because higher CDV values will increase the end-to-end latency.
Number of receive underruns Counter Number of receive underruns during the summary period. (The actual number of underruns may be higher than reported if more than 100 occurred in any 5-minute period.) Large values could indicate that the ATM network jitter is too high. This can be compensated for by using a higher Cell Delay Variation (CDV) when configuring subscribers. Note, however, that there is a quality trade-off because higher CDV values will increase the end-to-end latency.
Number of terminations linked to a call Gauge This field appears only in a VP3510 or MG3510. Number of terminations currently linked to this ATM Port.
Number of terminations reserved for use Gauge This field appears only in a VP3510 or MG3510. Number of terminations currently reserved for use with this ATM Port. This includes already linked terminations.
Count of failure notifications for terminations Counter This field appears only in a VP3510 or MG3510. Number of failure notifications for terminations on this ATM Port during this summary period. Note that if the whole ATM Port fails, this count is not incremented.