HP Web Jetadmin - Discovering PC-Connected Devices

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Reports
If the proxy discovered device is displaying supply levels and page counts, the devices can be added
to Data Collections and reports can be generated on the data that is collected.
PROXY COMPARISON
Recall earlier it was stated that the level of support for each device will depend on the following
variables:
 Which proxy discovered the device
 How the feature is exposed on the device
 How Web Jetadmin is defined to retrieve or configure the feature
HP Web Jetadmin can use a variety of techniques to retrieve or configure information such as SNMP,
DSMP, XDM, LEDM, and WS*. Web Jetadmin will only use one technique to support each feature on
a specific device. If a device supports LEDM, and a feature is exposed via LEDM, Web Jetadmin
supports the feature using only LEDM for that device. Even if the device also exposes the feature
through SNMP, Web Jetadmin uses the preferred technique of LEDM. This plays an important role in
what each proxy supports on a given device.
If the SNMP Proxy discovers the device, only features that Web Jetadmin uses SNMP to support on
that device will be exposed by the proxy. If the WS Pro Proxy discovers a device, only the features
that Web Jetadmin uses LEDM to support on that device will be exposed by the WS Pro Proxy.
For example, the HP LaserJet 400 M401 is a device that supports both SNMP and LEDM. Each
feature is supported using only one technique. If a feature is exposed through LEDM, Web Jetadmin
will use LEDM, regardless if the feature is also exposed through SNMP. It doesn’t matter which proxy
discovers the device, Web Jetadmin will only use LEDM for those features. This means if the SNMP
Proxy discovers the device, most features will not be supported as Web Jetadmin needs to use LEDM.
Some items, such as Tray levels, are only exposed on LEDM devices through SNMP. This means that
only the SNMP Proxy can display these items, the WS Pro Proxy cannot. There are very few items on
LEDM devices that are only exposed via SNMP, making the WS Pro proxy the preferred choice to
discover and manage LEDM devices.
FutureSmart printers expose features through a web services protocol called WS*, but many features
are also exposed through SNMP. However, Web Jetadmin is coded to use WS* if available for all
features. The WS Pro Proxy cannot discover FutureSmart devices at all, and while the SNMP Proxy
can discover these devices, it will only display model name as Web Jetadmin needs to use WS*for
everything else, and the SNMP Proxy cannot pass WS*.
See the Supported Devices section in this paper for examples of LEDM and FutureSmart printers.