Tuesday, 27 March 2012

how to Internet Printing Protocol (IPP) Defined in Hp Printer




Introduction
This document defines IPP and provides examples of how it eases printer configuration
and management. It also demonstrates how MultiNet and TCPware have a competitive
advantage over HP’s TCP/IP Services in printing because of its support for the IPP standard.


Printing Protocol Background
There are many proprietary printers on the market today because there are limited
protocol standards for printing (until the introduction of IPP). For example, LPR/LPD is based on a UNIX standard that was adopted by other operating systems, such as
OpenVMS and Windows. The protocol supports simple printing functionality (it was developed for line printers). Printer vendors have developed proprietary extensions to handle more robust printing features, such as double-sided printing. Printer vendors alsohave developed proprietary printing protocols. HP printers running on OpenVMS
operating system use the DCPS print symbiont.


Internet Printing Protocol (IPP) Overview
The IPP is an IETF standard application-level protocol that can be used for distributed
printing (RFC 2567). It allows an end user to print to a remote printer (including over the
Internet), using the same methods and operations as if the printer was local. The primary
goal of the Printer Working Group (under the IETF) is to deliver a standard off-the-shelf
solution. The standard addresses more than just submitting a print job (like the LPD
standard); it allows users to interact with printers in real-time in order to find out about
target printer capabilities, inquire about the status of a job or cancel a job that has been
submitted. IPP is independent of operating systems because it is based on web browser
and HTTP technology.
Many major vendors have adopted this standard. In 1998, nineteen companies
demonstrated interoperability using this protocol. Most notably Microsoft is supporting it
in Windows 2000 and Hewlett Packard supports the protocol in their Laser Jet printer
product line. To find out more about companies that are adopting the IPP standard, go to
Industry analysts have predicted that IPP will eventually replace LPD. IPP version 1 and
1.1 is being deployed today, but because the protocol is flexible and extendable, it has the.
ability to easily evolve, as printing needs change. Since LPD will be in use for some time
in the future, the IETF has provided some specifications on mapping LPD functionality to
IPP so that a gateway can be used between the two protocols.
Some examples of the standard printing features defined in the IPP RFC are:
Client Requests
· View job status-how many jobs in the queue, defaults, assigned priorities, is the
printer on-line?
· Cancel print job
· Find a printer by name, location or attributes (capabilities)
· Verify characteristics of printer-duplex, color, collating
· Submit printing-set parameters such as number of copies, two-sided, etc.
· Operator notification-Out of paper, out of ink alert, etc.
Server Response
· Received the print job and queued it
· Received the print job and printing it
· Received the print job and it failed–includes why it failed, state of printer, and how much printed
· Received print job, but couldn’t print–includes why it could not print and the state of the printer
· Did not receive the complete print job (e.g., communication error)


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1 comment:

  1. The tips you have given have made all the process so simple and work more fun.

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