This page shows statistics from the gateway's low-level ATM protocol.
In Octets: This is the number of octets received by the interface.
Out Octets: The number of octets transmitted over the interface.
In Errors: The number of cells dropped due to uncorrectable HEC errors.
In Unknown: The number of received cells discarded during cell header validation, including cells with unrecognised VPI/VCI values and cells with invalid cell header patterns. If the gateway is set up to discard cells with undefined PTI values, they are also counted here.
In HEC Errors: This is the number of cells received with HEC errors in ATM cell headers.
In Invalid VPI VCI Errors: The number of cells received with an unregistered VCC addresses.
In Port Not Enabled Errors: The number of cells received on ports that have not been enabled.
In PTI Errors: The number of cells received with a payload type indicator (PTI) error in the ATM header.
In Idle Cells: This is the number of idle cells received.
In Circuit Type Errors: The number of cells received with illegal circuit types.
In OAM RM CRC Errors: The number of OAM and RM cells received with cyclic redundancy check (CRC) errors.
In GFC Errors: The number of cells received with non-zero GFCs.
In Octets: This is the number of received AAL5/AAL0 CPCS PDU octets.
Out Octets: The number of transmitted AAL5/AAL0 CPCS PDU octets.
In Ucast Pkts: The number of received AAL5/AAL0 CPCS PDUs passed to higher layers.
Out Ucast Pkts: The number of AAL5/AAL0 CPCS PDUs received for transmission from higher layers.
In Errors: This is the number of AAL5/AAL0 CPCS PDUs received that contain errors. The errors include CRC-32 errors, SAR timeouts, and oversize SDUs.
Out Errors: The number of AAL5/AAL0 CPCS PDUs that could not be transmitted due to errors.
In Discards: The number of AAL5/AAL0 CPCS PDUs discarded due to input buffer overflow.
Out Discards: This is the number of AAL5/AAL0 CPCS PDUs discarded without having any errors. (For example, the gateway could do this to free up buffer space.)
VPI/VCI: Each row in the third table represents a different VPI/VCI combination. This item is the VPI/VCI for each row. A VPI/VCI combination is sometimes called a VCC (virtual circuit channel).
CRC Errors: This is the number of PDUs received with CRC-32 errors.
SAR Timeouts: The number of partially-reassembled PDUs discarded because they were not fully reassembled within the required time period. If the re-assembly timer is not supported, this value is zero.
Oversized SDUs: The number of PDUs discarded because the corresponding SDUs were too large.
Short Packet Errors: This is the number of PDUs discarded because their length was less than the size of the AAL5 trailer.
Length Errors: The number of PDUs discarded because the PDU length did not match the length in the AAL5 trailer.
Reset Statistics button: Click this button to set the totals back to zero.
Return to the Status menu options.