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Automatic diagnostic analysis, expert data views, application response times, and 
expert alarms are referred to collectively as Surveyor Expert Features. The Expert 
Features are available only from Surveyor menus and toolbars if you have the 
Expert plug-in.

Surveyor observes the traffic on network segments, learns their unique characteris-

tics, and constructs a database of network entities from the traffic it sees. Surveyor 

uses protocol decoding to learn about the connections, network stations, routing 

nodes, and subnetworks related to the frames in the buffer or capture file. From this 

information, Surveyor can detect potential problems on the network. 
Problems detected by Surveyor are categorized as being either symptoms or anal-

yses. When Surveyor detects an abnormal or unusual network event, it logs a 

symptom. A symptom indicates that a threshold has been exceeded and may indi-

cate a problem on your network.
Several symptoms analyzed together, high rates of recurrence of specific symptoms, 

or single instances of particular network events causes Surveyor to conclude that the 

network has a problem. These are logged as analyses. 
In addition to reporting significant problems, Surveyor provides helpful diagnostic 

information related to the symptom or analyses. 
No configuration is required to begin using the expert logic; however, some of the 
default thresholds for expert events may be changed. Configuration settings are 
organized as a tree structure within a single window to allow for efficient and easy 
configuration changes.

In monitor mode, the expert system does not work with NDIS cards running in 
systems with Surveyor 3.2 or lower. Expert features will work on captures obtained 
from these devices.