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8. Is there a tool or steps to test SNMP port access required by the HP UPD printer automatic configuration?
The SNMP port utilization by HP UPD will not be active until traffic is being sent or received during the Update
Now process. Full diagnosis involves checking port access at all connection points of the network between the HP
UPD printing client and target device (gateway/routers/switches/server and host firewalls). Utilities to help
troubleshoot connection path access can include Net Print, netstat, tracert, and pathping to identify network
device access. The SNMP port utilization by HP UPD will not be active until traffic is being sent or received during
the Update Now process making a network sniffer one of the best tools for diagnostics during the update process.
9. Why does RGB color from the Color tab only have a NULL option?
The Color Themes from the Color tab in the HP UPD properties is device dependent. The HP UPD configures
the settings based on the model name. If the Device Type is set to Color in the Device Settings tab (DCU or
manually) and if there is no bidi communication with the color product, then the HP UPD displays NULL. When
using the PCL 6 driver, the HP EasyColor option is not available either.
Figure 7-45 Null Option
10. Does the HP UPD support SNMP v3?
SNMP v3 is not supported by the UPD, therefore SNMP v3 enabled or disabled at the HP printer has no impact
on UPD SNMP v1/2 print, status or configuration. The HP UPD supports SNMP v1/2. All HP devices supported by
the HP UPD are v2 compatible.
11. Is SNMP required by the HP UPD for printing?
No, the SNMP stack installed by the HP UPD is only used for returning printer configuration and printer status
back to the printer driver. However, if the Microsoft SNMP stack utilized between the Microsoft spooler and printer
are incorrectly configured (i.e. SNMP name mismatch, or enabled on one side but not the other) the HP UPD
printer object may show the status “Offline.”
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