RFC 2569 (rfc2569) - Page 2 of 28
Mapping between LPD and IPP Protocols
Alternative Format: Original Text Document
RFC 2569 Mapping between LPD and IPP Protocols April 1999
Abstract
This document is one of a set of documents, which together describe
all aspects of a new Internet Printing Protocol (IPP). IPP is an
application level protocol that can be used for distributed printing
using Internet tools and technologies. This document gives some
advice to implementers of gateways between IPP and LPD (Line Printer
Daemon). This document describes the mapping between (1) the commands
and operands of the 'Line Printer Daemon (LPD) Protocol' specified in
RFC 1179 and (2) the operations, operation attributes and job
template attributes of the Internet Printing Protocol/1.0 (IPP). One
of the purposes of this document is to compare the functionality of
the two protocols. Another purpose is to facilitate implementation
of gateways between LPD and IPP.
WARNING: RFC 1179 was not on the IETF standards track. While RFC
1179 was intended to record existing practice, it fell short in some
areas. However, this specification maps between (1) the actual
current practice of RFC 1179 and (2) IPP. This document does not
attempt to map the numerous divergent extensions to the LPD protocol
that have been made by many implementers.
The full set of IPP documents includes:
Design Goals for an Internet Printing Protocol [RFC 2567]
Rationale for the Structure and Model and Protocol for the
Internet Printing Protocol [RFC 2568]
Internet Printing Protocol/1.0: Model and Semantics [RFC 2566]
Internet Printing Protocol/1.0: Encoding and Transport [RFC 2565]
Internet Printing Protocol/1.0: Implementors Guide [ipp-iig]
Mapping between LPD and IPP Protocols (this document)
The document, "Design Goals for an Internet Printing Protocol", takes
a broad look at distributed printing functionality, and it enumerates
real-life scenarios that help to clarify the features that need to be
included in a printing protocol for the Internet. It identifies
requirements for three types of users: end users, operators, and
administrators. It calls out a subset of end user requirements that
are satisfied in IPP/1.0. Operator and administrator requirements are
out of scope for version 1.0.
The document, "Rationale for the Structure and Model and Protocol for
the Internet Printing Protocol", describes IPP from a high level
view, defines a roadmap for the various documents that form the suite
of IPP specifications, and gives background and rationale for the
IETF working group's major decisions.
Herriot, et al. Experimental