System information

Network Vital Signs Mode 101
Setup Properties
The Setup dialog for Collision Expert Analysis lets you configure thresholds for
warnings about aberrant stations.
Expert thresholds (times from average % collisions):
• “Warning level” spinbox—sets the multiplier that Expert mode will use to warn of
events. For example, if this is set to “5,” the Expert will warn when a station’s
collision rate is five times the network average.
• “Critical level” spinbox—the number (multiplier) that the Expert will warn when
the station’s collisions become critical. For example, if this is set to “10”, the
station will be flagged critical when its collision rate is 10 times the network
average.
Minimum packet numbers for valid analysis:
• “Minimum number of packets” spinbox—this is the minimum number of packets
that any station must send/receive prior to the Expert acknowledging the station for
analysis. This value is set to disregard stations that may have a high number of
collisions, but not enough traffic to be statistically valid. For example, if a station
has 50% collisions, but only 20 packets, it would not be considered statistically
valid for analysis.
“Minimum number of collisions” spinbox—this is the minimum number of collisions
that any station must display prior to the Expert acknowledging the station for analysis.