Guidelines for the use of Internet-IP addresses in the ISO Connectionless-Mode Network Protocol (RFC1069)
Original Publication Date: 1989-Feb-01
Included in the Prior Art Database: 2019-Feb-15
Internet Society Requests For Comment (RFCs)
R.W. Callon: AUTHOR [+1]
This RFC suggests an addressing scheme for use with the ISO Connectionless Network Protocol (CLNP) in the Internet. This is a solution to one of the problems inherent in the use of "ISO-grams" in the Internet. This memo is a revision of RFC 986. This RFC suggests a proposed protocol for the Internet community, and requests discussion and suggestions for improvements.
Network Working Group R. Callon Request for Comments: 1069 DEC Obsoletes: RFC 986 H.W. Braun UMich February 1989
Guidelines for the use of Internet-IP addresses in the ISO Connectionless-Mode Network Protocol
Status of This Memo
This RFC suggests an addressing scheme for use with the ISO Connectionless Network Protocol (CLNP) in the Internet. This is a solution to one of the problems inherent in the use of "ISO-grams" in the Internet. This RFC suggests a proposed protocol for the Internet community, and requests discussion and suggestions for improvements. Distribution of this memo is unlimited.
This memo is a revision of RFC 986. Changes were made in order to allow the addressing used in the CLNP in the Internet to be potentially useful for routing in the context of new inter- and intra-domain routing protocols, and in the context of large numbers of networks and routing domains. The addressing scheme proposed in this RFC allows individual routing domains to make use of internal routing algorithms utilizing a variety of addressing formats, while still providing for a common addressing approach for use by inter- domain routing. These features are important due to the rapid growth currently being experienced in the Internet.
The data communications protocols currently emerging out of the international standardization efforts warrant an early integration into the existing extensive Internet network infrastructure. The two possible approaches are a top-down one, where ISO applications like FTAM, X.400 and VTP are integrated on top of the transport function of the IP protocol suite, or a bottom-up approach where the whole ISO tower gets integrated without merging the two suites. The bottom-up approach may make use of the fact that the ISO-CLNP and the IP are very similar in function. This implies that it is reasonable to implement a multiprotocol function in some or all of the Internet gateways (potentially including part or all of the Internet environment). The result would be that at least large portions of the Internet, in particular the backbones, can become usable for full implementations of the ISO protocol stack.
A major problem with this approach is that there are open issues with
Callon & Braun [Page 1]
RFC 1069 IP ISO Addressing February 1989
regard to the ISO addressing within the CLNP. In particular, the ISO network layer addressing standard allows a great deal of flexibility in the assignment of addresses, and a particular address format must be chosen. A further problem is the need for implementation and integration of routing facilities for the ISO-compatible subset of the Internet environment.
This paper proposed to use addresses which are considerably more flexible than the addresses used in the current IP Internet environment. This flexibility is necessary in order to allow some routing domains to base their internal routing protocol on addresses derived from the current IP addresses, to allow other routing domains...