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|System Administration Guide: Printing Oracle Solaris 11 Express 11/10|
The RFC-1179 protocol has served for decades as the standard network printing protocol. The protocol was originally designed to perform a very limited set of operations. The RFC-1179 protocol lacks a common representation for status information. In addition, this protocol offers only basic print job options. Conversely, the design of IPP includes features that are lacking in the RFC-1179 and BSD protocols. With IPP, a broad set of operations can be performed. These operations make use of a core set of common attributes by using a common representation and encoding method. Also, IPP enables encryption and authentication to be used between a print client and a print server. Finally, IPP provides a means for extending operations and attributes, while maintaining backward compatibility and interoperability. One of the results of the evolution of the RFC-1179 protocol is that it has several conflicting vendor extensions to overcome, making IPP the preferred choice of printing protocols.