Options - Discovery



Set these options to discover new computers and other end devices.

Schedule the discovery process. Also, you can run the discovery immediately
(menu - Action - Run Computer Discovery).

Turn on option "Enable WMI inventory" to collect WMI data from the remote computers.
WMI queries use current user credentials.
However, you can specify alternate credentials when querying remote computers.
In addition to predefined WMI queries you can add your own WMI queries.

During the discovery process, the program retrieves the MAC address table from
a switches via SNMP. If the MAC address of the computer absent from the table of the switch
then the program cannot determine the proper location of that computer and move it to the
"Pseudo device as temporary location".
There are some recommendations to avoid this problem:
- through the switch settings increase the length of time the switch keeps dynamic MAC
addresses in memory before discarding.
- run the discovery process when the majority of computers are alive

It takes some time to move the most of computers to its proper place on the map.
The program uses SNMP oid 1.3.6.1.2.1.17.4.3.1.2 and 1.3.6.1.2.1.17.7.1.2.2.1.2
to get bridge MAC address table. If the switch doesn't support these oids then
the program cannot locate devices connected to this switch.

During the discovery process, the program tries to resolve a MAC address to an IP address
and host name. It can take a few hours until the resolving cycle is finished.

On this option page you can manually set connections between switches
("Edit connection table" button ). Use this option if some connections discovered incorrectly
or remain undiscovered (labeled as xx). For example in this table:
192.168.0.1 port 12 - 192.168.0.2 port 50
The upper (in the tree) switch must be on the left side of the '-' character, the lower switch must
be on the right side of the '-' character.
This option also allows you to add non-SNMP device to the main map. In the example above the
device 192.168.0.2 may not support SNMP.

If you turn on the option "Notify when the Spanning Tree Topology is changed" then
administrator will be notified when STP topology changed