HP Web Jetadmin Software Uživatelský manuál stáhnout pdf (Strana 11)

Some items, such as Tray levels, are exposed only on LEDM devices through SNMP. This means that

only HP SNMP Proxy Agent can display these items. HP WS Pro Proxy Agent cannot. There are very

few items on LEDM devices that are exposed only via SNMP, making HP WS Pro Proxy Agent the

preferred choice to discover and manage LEDM devices.

HP FutureSmart printers expose features through a Web Services protocol called WS*, but many

features are also exposed through SNMP. However, HP Web Jetadmin is coded to use WS* if it is

available for all features. HP WS Pro Proxy Agent cannot discover HP FutureSmart devices at all.

While HP SNMP Proxy Agent can discover HP FutureSmart devices, it only displays the model name

because HP Web Jetadmin must use WS*for everything else and HP SNMP Proxy Agent cannot pass

WS*.

For examples of LEDM and HP FutureSmart printers, see “Supported devices” on page 11.

Comparisons of networked vs. PC-connected for SNMP, LEDM and WS* based printers

SUPPORTED DEVICES

WMI

A device can be discovered via WMI as long the device supports plug-and-play and bi-directional

communication has been established, which allows the device’s plug-and-play ID to be placed into the

registry. Both HP and third-party devices can be discovered via WMI. In fact, the printer driver is

irrelevant in this case because the plug-and-play ID—not the driver name—is displayed as the model

of the discovered device. The plug-and-play ID represents the physically connected device no matter

which driver is used. Devices connected via LPT ports can pose a slight problem because the plug-

and-play ID is only added or removed from the registry after a workstation power cycle.

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HP Web Jetadmin Software Uživatelský manuál Strana 11