Service Advertising Protocol


The Service Advertising Protocol is included in the Internetwork Packet Exchange protocol. SAP makes the process of adding and removing services on an IPX internetwork dynamic. SAP is maintained by Novell.
As servers are booted up, they may advertise their services using SAP; when they are brought down, they use SAP to indicate that their services will no longer be available. IPX network servers may use SAP to identify themselves by name and service type. All entities that use SAP must broadcast a name and Service Type that are unique throughout the entire IPX internetwork. This policy is enforced by system administrators and application developers.

SAP Service Types

ValueMeaning
0x0001User
0x0002User group
0x0003Print queue
0x0004File server
0x0005Job server
0x0006Gateway
0x0007Print server
0x0009Archive server
0x000AJob queue
0x000BAdministrative object
0x0021SNA gateway
0x0024Remote bridge server
0x0027TCP/IP gateway
0x0047Advertising print server
0x8000-0x7FFFReserved
0xFFFFWildcard