The Solaris 2.6 print protocol adaptor replaces the Service Access Facility (SAF), the network listener, and lpNet on the inbound side of the LP spooler with a more modular, modern design.
This replacement provides the following features:
Complete BSD print protocol implementation plus extended Solaris functionality.
Allows multiple spooling systems to coexist on the same host and have access to the BSD print protocol.
Extensible by third-party application developers to support other printing protocols such as Apple, Novell, etc.).
The new print protocol adaptor is compatible with print clients set up in previous Solaris 2.x releases if the "BSD" protocol was used to configure these clients. If not, you'll have to modify the previous Solaris 2.x print client configuration to use the "BSD" protocol using AdmintoolTM, Solstice Printer Manager, or the lpsystem command.