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During the routing path analysis required for the ZoneRanger root cause algorithm
Most of these mechanisms can be disabled using configuration options. To limit discovery to the
portions of the network that are of interest, addresses discovered during analysis activities are added
to the list of addresses to be analyzed only if they pass the include network/exclude network filter
criteria.
Default discovery behavior
The following default discovery settings ( Configuration > Discovery ) are generated during initial
ZoneRanger configuration:
•
Search for additional nodes is enabled, and the Read IP route table , Read ARP cache ,
and Broadcast ping enabled suboptions are enabled.
•
Auto configure polling for newly discovered nodes is enabled.
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Auto Manage newly discovered nodes is enabled.
•
The Seed Node List is populated with a single entry containing the default gateway IP
address as specified during initial ZoneRanger configuration.
•
The Include Networks list is populated with a single entry, generated by taking the IP
address of the ZoneRanger specified during initial ZoneRanger configuration, and masking
off the last three octets. For example, if the ZoneRanger's IP address is
10.254.1.190
, the
default include network is
10.0.0.0
, which limits discovery to IP addresses of the form
10
.n.n.n
. The Exclude Networks list is initially empty.
•
The Ping Ranges list is initially empty.
ZoneRanger 5.5 User's Guide 59
Figure 19-1. Discovery Algorithm