RFC 1629 (rfc1629) - Page 2 of 52
Guidelines for OSI NSAP Allocation in the Internet
Alternative Format: Original Text Document
RFC 1629 NSAP Guidelines May 1994
Table of Contents
Section 1. Introduction ............................... 4
Section 2. Scope ...................................... 5
Section 3. Background ................................. 7
Section 3.1 OSI Routing Standards ..................... 7
Section 3.2 Overview of IS-IS (ISO/IEC 10589) ......... 8
Section 3.3 Overview of IDRP (ISO/IEC 10747) .......... 12
Section 3.3.1 Scaling Mechanisms in IDRP .............. 14
Section 3.4 Requirements of IS-IS and IDRP on NSAPs ... 15
Section 4. NSAPs and Routing .......................... 16
Section 4.1 Routing Data Abstraction .................. 16
Section 4.2 NSAP Administration and Efficiency ........ 19
Section 5. NSAP Administration and Routing in the In-
ternet ........................................... 21
Section 5.1 Administration at the Area ................ 23
Section 5.2 Administration at the Subscriber Routing
Domain ........................................... 24
Section 5.3 Administration at the Provider Routing
Domain ........................................... 24
Section 5.3.1 Direct Service Providers ................ 25
Section 5.3.2 Indirect Providers ...................... 26
Section 5.4 Multi-homed Routing Domains ............... 26
Section 5.5 Private Links ............................. 31
Section 5.6 Zero-Homed Routing Domains ................ 33
Section 5.7 Address Transition Issues ................. 33
Section 6. Recommendations ............................ 36
Section 6.1 Recommendations Specific to U.S. Parts of
the Internet ..................................... 37
Section 6.2 Recommendations Specific to European Parts
of the Internet .................................. 39
Section 6.2.1 General NSAP Structure .................. 40
Section 6.2.2 Structure of the Country Domain Part .... 40
Section 6.2.3 Structure of the Country Domain
Specific Part .................................... 41
Section 6.3 Recommendations Specific to Other Parts of
the Internet ..................................... 41
Section 6.4 Recommendations for Multi-Homed Routing
Domains .......................................... 41
Section 6.5 Recommendations for RDI and RDCI assign-
ment ............................................. 42
Section 7. Security Considerations .................... 42
Section 8. Authors' Addresses ......................... 43
Section 9. Acknowledgments ............................ 43
Section 10. References ................................ 44
Section A. Administration of NSAPs .................... 46
Section A.1 GOSIP Version 2 NSAPs .................... 47
Section A.1.1 Application for Administrative Authority
Colella, Callon, Gardner & Rekhter