HP Network s manual Line Printer Daemon LPD Protocol

ipp://ip-address-or-hostname/resource?option=value

ipp://ip-address-or-hostname/resource?option=value&option=value ipp://ip-address-or-hostname:port-number/resource ipp://ip-address-or-hostname:port-number/resource?option=value ipp://ip-address-or-hostname:port-number/resource?option=value&option=value

The ipp backend supports many options, which are summarized in Table 2.

Table 2: IPP URI Options
Option	Description
compression=gzip	Specifies that print data should be compressed before sending.
encryption=always	Specifies that the connection to the IPP server should be encrypted using
	SSL.
	Specifies that the connection to the IPP server should only be encrypted if
encryption=ifrequested the server requests it.
encryption=never	Specifies that the connection to the IPP server should not be encrypted.
encryption=required	Specifies that the connection to the IPP server should be encrypted using
	TLS.
version=1.0	Specifies that version 1.0 of the IPP protocol should be used instead of the
	default version 1.1.
waitjob=false	Specifies that the IPP backend should not wait for the job to complete.
	Specifies that the IPP backend should not wait for the printer to become

waitprinter=false

idle before sending the print job.

Line Printer Daemon (LPD) Protocol

LPD is the original network printing protocol and is supported by many network printers. Due to limitations in the LPD protocol, we do not recommend using it if the printer or server supports one of the other protocols. LPD printing normally happens over port 515 and uses the lpd URI scheme:

lpd://ip-address-or-hostname/queue

lpd://ip-address-or-hostname/queue?option=value

lpd://ip-address-or-hostname/queue?option=value&option=value

Table 3 summarizes the options supported by the lpd backend.

Table 3: LPD URI Options

Option	Description
banner=on	Specifies that a banner page should be printed by the server.

Specifies the number of seconds to wait for the connection to the server to contimeout=seconds complete.

format=c	Specifies that the print data is a CIF file.
format=d	Specifies that the print data is a DVI file.
format=f	Specifies that the print data is a plain text file.
format=g	Specifies that the print data is a Berkeley plot file.
format=l	Specifies that the print data is a raw (preformatted) print file.
format=n	Specifies that the print data is a ditroff file.
format=o	Specifies that the print data is a PostScript file.
format=p	Specifies that the print data is a plain text file that should be "pretty" printed with
	a header and footer.