Line Printer Daemon protocol: Difference between revisions

Revision as of 16:32, 27 January 2009

Revision as of 00:05, 4 February 2009

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==Usage==

In order for a system to provide print functionality using <tt><b>'''LPD</b>'''</tt>, the <tt>lpd</tt> program must be configured and started. Based upon its configuration, it will create the necessary queues and address the printers available to users of the system. Once started, it listens for local messages on TCP port 515 (in standard implementations) from the <tt>lpr</tt>, <tt>lpq</tt>, <tt>lprm</tt>, and <tt>lpc</tt> programs, as well as for network messages from remote clients who also implement the LPD protocol.

An LPD printer is identified by the IP address of the [[personal computer|PC]] (or network printer or server) and the queue name. Many different queue names may exist in one LPD server, with each queue having unique settings. Note that the LPD queue name is case sensitive. Some modern implementations of LPD on network printers might ignore the case or queue name altogether and send all jobs to the same printer. Others has the option to automatically create a new queue when a print job with a new queue name is received. This helps to simplify the setup of the LPD server.<ref>[http://gpvno.co.za/ Winet]'s InetLPD server documentation.</ref> Some companies{{fix|link=Wikipedia:Contents|text=who?}} have a tradition of calling the queue name “lpt1” or “LPT1”.