HP PageWide Pro 577dw OfficeJet Pro X and PageWide Pro Series - IT Administrat - Page 8

Multicast Discovery, Off-Subnet Devices

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 The printer might be turned off or off the network. Check that the printer is plugged in and turned on. If the printer is connected to the network over Ethernet cable, check the cable and its connection. If the printer is connected wirelessly, ensure that the printer is still connected to the network. Logs Each execution of DeviceSetup.exe generates a new log file which can be found at C:\Users\\AppData\Local\HP\AtInstall\\DeviceSetup.log on Vista and Win7 and at C:\Documents and Settings\\Local Settings\Application Data\HP\AtInstall\\DeviceSetup.log on XP. Multicast Discovery The normal behavior for our software is that it discovers (and rediscovers) printers on the network using Web Services Discovery (WSD), which sends multicast UDP packets. When installing using the UI, the software will attempt a multicast resolve and will inform the user that rediscovery will not properly function. It allows the user to correct anything blocking the issue and retry or to install by IP address. This will enable the software to function properly on a network where multicast is disabled. This also results in the software being unable to find and use the device if the IP address changes and the printer's hostname won't resolve the IP address. When installing a printer using DeviceSetup.exe on the command line (passing an IP address), this check is not performed, and the software assumes that multicast resolves will be able to find the printer after install. To disable multicast discovery for a printer when the device is installed by command line, the ini file for the printer must be modified. After installing the printer, a data file is created in C:\ProgramData\HP\\NetworkDevices\.ini. In the [DeviceInfo] section, a key called MulticastEnabled will be set to "true". This can be changed to "false" to disable multicast rediscovery of the printer. But if the printer's IP address changes, the IP address in this ini file will need to be updated, or the user can run the "Update IP Address" tool from the Start Menu. Off-Subnet Devices The process described in the section Installing a Network Printer is the same process to install a printer that is on a different subnet than the PC on which it is being installed. Follow those instructions to install such a printer. However, since the printer is installed on a different subnet than the PC, the client PC cannot rediscover the printer if the IP address or hostname of the printer changes. The section below describes how to update the client PC if the IP or hostname of the printer is changed.

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The printer might be turned off or off the network.
Check that the printer is plugged in and turned on.
If the printer is connected to the
network over Ethernet cable, check the cable and its connection.
If the printer is
connected wirelessly, ensure that the printer is still connected to the network.
Logs
Each execution of DeviceSetup.exe generates a new log file which can be found at
C:\Users\<NTUserAccount>\AppData\Local\HP\AtInstall\<execution#>\DeviceSetup.log
on Vista and Win7 and at
C:\Documents and Settings\<NTUserAccount>\Local Settings\Application
Data\HP\AtInstall\<execution#>\DeviceSetup.log
on XP.
Multicast Discovery
The normal behavior for our software is that it discovers (and rediscovers) printers on the
network using Web Services Discovery (WSD), which sends multicast UDP packets.
When
installing using the UI, the software will attempt a multicast resolve and will inform the user
that rediscovery will not properly function.
It allows the user to correct anything blocking the
issue and retry or to install by IP address.
This will enable the software to function properly
on a network where multicast is disabled.
This also results in the software being unable to
find and use the device if the IP address changes and the printer’s hostname won’t resolve
the IP address.
When installing a printer using DeviceSetup.exe on the command line (passing an IP
address), this check is not performed, and the software assumes that multicast resolves will
be able to find the printer after install.
To disable multicast discovery for a printer when the device is installed by command line, the
ini file for the printer must be modified.
After installing the printer, a data file is created in
C:\ProgramData\HP\<Model Name>\NetworkDevices\<Serial Number>.ini.
In the
[DeviceInfo] section, a key called MulticastEnabled will be set to “true”
.
This can be
changed to “false” to disable multicast rediscovery of the printer.
But if the printer’s IP
address changes, the IP address in this ini file will need to be updated, or the user can run
the “Update IP Address” tool from the Start Menu.
Off-Subnet Devices
The process described in the section
Installing a Network Printer
is the same process to
install a printer that is on a different subnet than the PC on which it is being installed.
Follow
those instructions to install such a printer.
However, since the printer is installed on a
different subnet than the PC, the client PC cannot rediscover the printer if the IP address or
hostname of the printer changes.
The section below describes how to update the client PC
if the IP or hostname of the printer is changed.