'Summary period' ATM Port Statistics


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 local subscribers are configured. 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 local subscribers are configured. Note, however, that there is a quality trade-off because higher CDV values will increase the end-to-end latency.