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Discovery settings

The Device Discovery wizard’s Specify discovery

options pane is used to initialize discovery

settings (Figure 2). Launch the Device Discovery

wizard by right-clicking the Discovery node in

the HP Web Jetadmin navigation tree. Use

template, Specify settings, and Schedule

discovery are the discovery options covered in

this document. To begin a new discovery, select

Specify settings and choose either Network

connected devices or PC connected devices. Then

choose one or more of the various methods of

discovery (the options in the next few screens will

vary depending on the methods selected). It is

not possible to run both PC-connected and

network device discovery at the same time, but it

is possible to schedule them to run consecutively.

Click Next to go on to the rest of the settings

needed to complete the discovery setup.

Network device discovery vs. PC-connected discovery

Both PC-connected and network-connected device discoveries result in devices added to the All

Devices list. Network devices, when discovered, are manageable from within HP Web Jetadmin.

Administrators can remotely change device settings, get troubleshooting details, collect device

specifics, and create device reports. PC-connected devices are less manageable due to the restrictive

nature of the connection.

Network discovery specifics

SNMP is used as the primary communication method for discovering and qualifying

network-connected devices before they are added to the All Devices list. HP Web Jetadmin uses a

combination of standard and proprietary management information base (MIB) objects to both

discover and manage network devices. In fact, HP Web Jetadmin is capable of discovering non-HP

devices through the standard MIB (manageability varies depending on the manufacturer and model).

PC discovery specifics

HP Web Jetadmin finds PC-connected devices by first discovering the Microsoft® Windows® host

and then querying it to find devices connected to the LPT or USB port. Once HP Web Jetadmin has

finished the first (node detection) portion of the discovery, it uses either SNMP or Windows

Management Instrumentation (WMI) to discover devices. To use SNMP, the HP SNMP Proxy Agent

must be deployed onto the Windows hosts (see “Appendix D” on page 20 for more information). To

use WMI, HP Web Jetadmin requires Windows credentials for local administrator access to the

Windows host.

If a PC-connected device has been discovered with the HP SNMP Proxy Agent, HP Web Jetadmin

collects a limited set of details from the device and supports a few management features such as

Status, Troubleshooting, and Reporting. When the PC-connected device has been discovered via

WMI, only limited device model information will appear in the All Devices list.

It is important to note how HP Web Jetadmin performs the second portion (node resolution) in

PC-connected discovery. Each Windows host discovered is first queried using SNMP—if a response is

encountered, special printer queries are used to discover a device on the LPT or USB port. If the

HP SNMP Proxy Agent and other requirements are met, a device connected to that host is discovered.

Figure 2—Device Discovery > Specify discovery options

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HP Web Jetadmin Software Manuale Utente Pagina 4

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