There are eight 'Summary period' ATM Port Statistics objects, which each display statistics collected over a different time interval. Note that the summary periods are preconfigured; you cannot change the summary periods or create new 'Summary period' ATM Port Statistics objects. All the 'Summary period' ATM Port Statistics objects have the same fields. All the fields are read only and there are no management actions associated with these objects. However, you can reset all the fields of the 'Summary period' ATM Port Statistics objects by clicking on the 'Reset statistics' pushbutton displayed in the ATM Port object.
Parameter |
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. 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. 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. |