Finisar Surveyor, User Manual

Page: 215 / 454

10-11
Expert Features
Expert Symptoms, Analyses, and Network Entities
10
Analyses
High rates of recurrence of specific symptoms or single instances of particular
network events cause the software to assert that the network has a real problem.
These are logged as analyses. Analyses should be investigated immediately.
Counters for analyses can be used to trigger alarms.
Press the
Analyses
tab on the Expert window to view the diagnoses derived from
the current packet analysis. Analyses display exactly like symptoms. See Figure 10-
1 and Figure 10-3 for examples.
Tables in the Detail Area for Analyses
The first list displays which types of diagnoses and how many of them are found in
the connections between the two network stations.
The second list displays the network traffic of the first network station. It shows
how many packets and bytes of data are sent and received by the station. It shows
how many broadcast packets the station sent and the MAC addresses associated
with the station.
The third list displays the network traffic of the second network station, if present.
The fourth list displays the network traffic between the two network stations. It
shows how many packets and bytes of data are sent from the first to the second and
the second to the first.
Entities
Surveyor extracts information from the data stream to form its network entity data-
base. Entities can be DLC stations (physical and logical link layers), network
stations (network layer), connections (transport layer), sessions (session layer),
applications (presentation, and application layers), a subnetwork, a router, or other
useful data entities.