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. |