OID value: 1.3.6.1.2.1.13.1
OID description:
Apple's file and printer sharing protocol; see http://directory.google.com/Top/Computers/Software/Operating_Systems/Mac_OS/Network/
URL for further info: http://www.ibr.cs.tu-bs.de/cgi-bin/sbrowser.cgi?HOST=&OID=APPLETALK-MIB!appletalk
See also the OID Repository website reference for 1.3.6.1.2.1.13.1