Statistics are presented as “stat objects” in the Raw Data file. They are owned by the device objects from which they were collected.
For each statistic, a series of parameters applies, including the device type from which it was collected, how many samples were used in deriving the values, and calculations, such as averages and standard deviations where applicable. For more information, see Field Definitions for the Raw Data File and Section 5.2.1, Interpreting the Results Table.
The names of many statistics are abbreviated in the Raw Data file. Their abbreviations are shown in the table below:
|
Abbreviation |
Statistic |
Definition |
|---|---|---|
|
ACOM |
ACombined |
Equal to ERL (Echo Return Loss) + ERLE (Echo Return Loss Enhancement). ERLE is the amount of echo provided by an echo canceller. |
|
Bandwidth |
Bandwidth utilization |
Bandwidth utilization as a percentage found during SNMP polling |
|
Broadcasts |
Broadcast packets |
Broadcast packets expressed as a percentage of all packets processed on the device since it came online |
|
ChannelUtil |
Channel utilization |
Percentage of bearer channels in use for a T1 or E1 circuit |
|
CollRate |
Collision rate |
Percentage of all packets processed on the device since it came online |
|
CPU1min CPU5min |
CPU utilization 1 min; 5 min |
CPU utilization measured during one-minute or five-minute polling interval |
|
CPU5sec |
CPU utilization 5 seconds |
CPU utilization measured during five-second polling interval |
|
Delay |
Delay |
End-to-end delay in a single direction between Target Devices |
|
Discards |
Discards |
Number of packets discarded by the device since it came online |
|
DroppedPacketsPct |
Dropped packets percentage |
Percentage of packets for this traffic class dropped as a result of all features that can cause drops, such as policy and random detect |
|
ECNS |
Congestion notification |
Number of frame-relay frames that experienced congestion during SNMP polling |
|
ERL |
Echo return loss |
Ratio of the power level of the transmitted voice signal to the power level of the echo signal generated by the VoIP gateway |
|
Errors |
Errors |
Errors detected from the cyclical redundancy checks (CRSs) in the packets |
|
Frames |
Frames |
Frame-relay frames sent and received during SNMP polling |
|
InSignal |
Signal in |
Active input signal level (in decibels) from the telephony interface used by a call leg |
|
JitterBufferLoss |
Jitter buffer loss |
Percentage of all datagrams lost due to jitter buffer overruns or underruns since the device came online |
|
LossRate |
Loss rate |
Rate at which packets were lost, as a percentage of all packets sent and received since the device came online |
|
LostData |
Lost data |
Number of datagrams lost between the Target Devices, expressed as a percentage of all data sent. |
|
MediaRate |
Media rate |
Percentage of all packets that experienced media errors on the device since it came online |
|
MemFast |
Fast memory |
Percentage of the memory pool being utilized |
|
MemI/O |
I/O memory |
Percentage of the memory pool being utilized |
|
MemProcessor |
Processor memory |
Percentage of the memory pool being utilized |
|
MOS |
Mean Opinion Score |
Numerical representation of the quality of a VoIP transmission. A MOS of 5 is considered excellent. A MOS of 1 is unacceptably bad. |
|
MultRate |
Multiple collision ratio |
Percentage of all packets processed that experienced multiple collisions since the device came online |
|
NoBufPacketsPct |
Dropped packets percentage |
Percentage of packets for this traffic class dropped due to a lack of SRAM buffers during output processing on an interface |
|
Octets |
Octets |
Bytes sent and received since the device came online |
|
OutSignal |
Signal out |
Active output signal level (in decibels) from the telephony interface used by a call leg |
|
Packets |
Packets |
Packets sent and received since the device came online |
|
Ping |
Ping test |
Results from the Ping test used to collect statistics |
|
PostUtil |
Post-policy traffic class utilization |
Bandwidth utilization for this traffic class after execution of any QoS policies by the device |
|
PreUtil |
Pre-policy traffic class utilization |
Bandwidth utilization for this traffic class before execution of any QoS policies by the device |
|
Protos |
Unknown protocols |
Number of packets discarded with unknown protocols, as a percentage of all packets sent and received since the device came online |
|
QLen |
Queue length |
For an interface: the length of a router or switch queue, as a number of packets For a traffic class object: the queue depth for a particular traffic class |
|
Reach |
Traceroute |
Traceroute test used to collect statistics |
|
SignalErrors |
Signal errors |
Accumulated number of signaling protocol errors detected in the interface since the interface came online |