Browse Prior Art Database

TCP and UDP with Bigger Addresses (TUBA), A Simple Proposal for Internet Addressing and Routing (RFC1347) Disclosure Number: IPCOM000002171D
Original Publication Date: 1992-Jun-01
Included in the Prior Art Database: 2001-Nov-09
Document File: 18 page(s) / 26K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

R. Callon: AUTHOR


Status of the Memo (Download file contains alternative document formats.)

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 14% of the total text.

        Network Working Group                                  Ross Callon

        Request for Comments: 1347                                     DEC

                                                                 June 1992

                    TCP and UDP with Bigger Addresses (TUBA),

              A Simple Proposal for Internet Addressing and Routing

        Status of the Memo

        This memo provides information for the Internet community. It

        does not specify an Internet standard. Distribution of this

        memo is unlimited.

        1 Summary

        The Internet is approaching a situation in which the current IP

        address space is no longer adequate for global addressing

        and routing. This is causing problems including: (i) Internet

        backbones and regionals are suffering from the need to maintain

        large amounts of routing information which is growing rapidly in

        size (approximately doubling each year); (ii) The Internet is

        running out of IP network numbers to assign. There is an urgent

        need to develop and deploy an approach to addressing and routing

        which solves these problems and allows scaling to several orders

        of magnitude larger than the existing Internet. However, it is

        necessary for any change to be deployed in an incremental manner,

        allowing graceful transition from the current Internet without

        disruption of service. [1]

        This paper describes a simple proposal which provides a long-term

        solution to Internet addressing, routing, and scaling. This

        involves a gradual migration from the current Internet Suite

        (which is based on Internet applications, running over TCP or

        UDP, running over IP) to an updated suite (based on the same

        Internet applications, running over TCP or UDP, running over CLNP

        [2]). This approach is known as "TUBA" (TCP & UDP with Bigger


        This paper describes a proposal for how transition may be

        accomplished. Description of the manner in which use of CLNP,

        NSAP addresses, and related network/Internet layer protocols

        (ES-IS, IS-IS, and IDRP) allow scaling to a very large ubiquitous

        worldwide Internet is outside of the scope of this paper.

        Originally, it was thought that any practical proposal needed to

        address the immediate short-term problem of routing information

        explosion (in addition to the long-term problem of scaling to a

        worldwide Internet). Given the current problems caused by

        excessive routing information in IP backbones, this could require

        older IP-based systems to talk to other older IP-based systems

        over intervening Internet backbones which did not support IP.

        This in turn would require either translation of IP packets into

        Callon                                                    [Page 1]

        RFC 1347   TUBA: A Proposal for Addressing and Routing   June 1992

        CLNP packets and vice versa, or encapsulation of IP packets

        inside CLNP packets. However, other shorter-term techniques (for

        example [3]) have been proposed which will allow the Internet to

        operate successfully for several years using the current IP

        address space. This in turn allows more time for IP-to-CLNP

        migration, which in turn allows for a much simpler migration


        The TUBA proposal therefore makes use of a simple long-term

        migration proposal based on a gradual update of Internet Hosts

        (to run Internet appl...