User's Manual

Table 3-4 Primary and Secondary Protocols for PC-Connected Device Discoveries (continued)
PC-Connected Device Discovery Method Primary Protocol Secondary Protocol
IP range SNMP WMI
Specified addresses SNMP WMI
Active Directory SNMP WMI
Domain SNMP WMI
*IP broadcast discoveries send an SNMP query to a broadcast address. IP broadcasts will only find devices
through WMI if the PC is able to respond to SNMP queries. The SNMP service must be enabled on the PC in
order for it to respond to SNMP queries.
It is important to remember that discovery through the WMI protocol requires administrative access to the
remote host being queried. The local admin password can be used but in many environments a domain user
is granted administrative privileges on local Windows hosts. Administrative credentials are entered at the
time of discovery by using the checkbox, Specify credentials for this discovery.
PC-Connected devices are added to the same All Devices list as are network connected devices. Devices that
are discovered via PC-Connected Devices can be distinguished from other devices.
HP SNMP Proxy Agent
HP SNMP Proxy Agent is software that is installed on a desktop client PC. HP Web Jetadmin uses HP SNMP
Proxy Agent to discover and manage locally connected (for example, USB-connected) HP printers and
scanners. HP SNMP Proxy Agent exposes management objects through the Microsoft SNMP service on the
client PC. A simple PC-connected device discovery in HP Web Jetadmin discovers the locally attached devices.
HP Web Jetadmin then uses the proxy to gather additional information about the devices, such as remaining
toner levels, page counts, and status. The HP SNMP Proxy Agent software is available from
www.hp.com/go/
webjetadmin. For more information about the requirements and important support details, see the HP SNMP
Proxy Agent Readme. This Readme is available from the
HP Support Center.
Troubleshoot PC-connected Device Discoveries
Administrators can use the log files in HP Web Jetadmin to troubleshoot PC-connected device discoveries.
The log files are useful when running Windows Management Instrumentation (WMI) or HP SNMP Proxy Agent
discoveries. The log files do not capture details about network-connected device discoveries.
To enable logging, perform the following steps:
1. Use Notepad or a similar editor to open the DiscoveryManager.config.xml file. This file is available in the
following directory:
C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Hewlett-Packard\HPWebJetadmin
\WjaService\config
2. Find the following property:
<property name="DiscoveryLogEnabled”>
<type>HP.Imaging.Wjp.Sdk.Core.Framework.ConfigurationItemString
</type>
<value>False</value>
</property>
3. Change the <value> entry to True.
4. Find the following property:
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