RFC 2608 (rfc2608) - Page 2 of 54
Service Location Protocol, Version 2
Alternative Format: Original Text Document
RFC 2608 Service Location Protocol, Version 2 June 1999
6.2. Use of TCP . . . . . . . . . . . . . . . . . . . . . 14
6.3. Retransmission of SLP messages . . . . . . . . . . . 15
6.4. Strings in SLP messages . . . . . . . . . . . . . . . 16
6.4.1. Scope Lists in SLP . . . . . . . . . . . . . . 16
7. Errors 17
8. Required SLP Messages 17
8.1. Service Request . . . . . . . . . . . . . . . . . . . 19
8.2. Service Reply . . . . . . . . . . . . . . . . . . . . 21
8.3. Service Registration . . . . . . . . . . . . . . . . . 22
8.4. Service Acknowledgment . . . . . . . . . . . . . . . . 23
8.5. Directory Agent Advertisement. . . . . . . . . . . . . 24
8.6. Service Agent Advertisement. . . . . . . . . . . . . . 25
9. Optional Features 26
9.1. Service Location Protocol Extensions . . . . . . . . . 27
9.2. Authentication Blocks . . . . . . . . . . . . . . . . 28
9.2.1. SLP Message Authentication Rules . . . . . . . 29
9.2.2. DSA with SHA-1 in Authentication Blocks . . . 30
9.3. Incremental Service Registration . . . . . . . . . . 30
9.4. Tag Lists . . . . . . . . . . . . . . . . . . . . . . 31
10. Optional SLP Messages 32
10.1. Service Type Request . . . . . . . . . . . . . . . . 32
10.2. Service Type Reply . . . . . . . . . . . . . . . . . 32
10.3. Attribute Request . . . . . . . . . . . . . . . . . . 33
10.4. Attribute Reply . . . . . . . . . . . . . . . . . . . 34
10.5. Attribute Request/Reply Examples . . . . . . . . . . . 34
10.6. Service Deregistration . . . . . . . . . . . . . . . 36
11. Scopes 37
11.1. Scope Rules . . . . . . . . . . . . . . . . . . . . . 37
11.2. Administrative and User Selectable Scopes. . . . . . . 38
12. Directory Agents 38
12.1. Directory Agent Rules . . . . . . . . . . . . . . . . 39
12.2. Directory Agent Discovery . . . . . . . . . . . . . . 39
12.2.1. Active DA Discovery . . . . . . . . . . . . . 40
12.2.2. Passive DA Advertising . . . . . . . . . . . . 40
12.3. Reliable Unicast to DAs and SAs. . . . . . . . . . . . 41
12.4. DA Scope Configuration . . . . . . . . . . . . . . . 41
12.5. DAs and Authentication Blocks. . . . . . . . . . . . . 41
13. Protocol Timing Defaults 42
14. Optional Configuration 43
15. IANA Considerations 44
16. Internationalization Considerations 45
17. Security Considerations 46
A. Appendix: Changes to the Service Location Protocol from
v1 to v2 48
B. Appendix: Service Discovery by Type: Minimal SLPv2 Features 48
C. Appendix: DAAdverts with arbitrary URLs 49
D. Appendix: SLP Protocol Extensions 50
D.1. Required Attribute Missing Option . . . . . . . . . . 50
Guttman, et al. Standards Track
