RFC 1526 (rfc1526) - Page 1 of 8

Assignment of System Identifiers for TUBA/CLNP Hosts

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Network Working Group                                      D. Piscitello
Request for Comments: 1526                                      Bellcore
Category: Informational                                   September 1993


          Assignment of System Identifiers for TUBA/CLNP Hosts

Status of this Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard.  Distribution of this memo is
   unlimited.

Abstract

   This document describes conventions whereby the system identifier
   portion of an RFC 1237 style NSAP address may be guaranteed
   uniqueness within a routing domain for the purpose of
   autoconfiguration in TUBA/CLNP internets. The mechanism is extensible
   and can provide a basis for assigning system identifiers in a
   globally unique fashion.

Introduction

   This memo specifies methods for assigning a 6 octet system identifier
   portion of the OSI NSAP address formats described in "Guidelines for
   OSI NSAP Allocation in the Internet" [1], in a fashion that ensures
   that the ID is unique within a routing domain. It also recommends
   methods for assigning system identifiers having lengths other than 6
   octets. The 6 octet system identifiers recommended in this RFC are
   assigned from 2 globally administered spaces (IEEE 802 or "Ethernet",
   and IP numbers, administered by the Internet Assigned Numbers
   Authority, IANA).

   At this time, the primary purpose for assuring uniqueness of system
   identifiers is to aid in autoconfiguration of NSAP addresses in
   TUBA/CLNP internets [2]. The guidelines in this paper also establish
   an initial framework within which globally unique system identifiers,
   also called endpoint identifiers, may be assigned.

Acknowledgments

   Many thanks to Radia Perlman, Allison Mankin, and Ross Callon of for
   their insights and assistance. Thanks also to the Ethernet connector
   to my MAC, which conveniently and quite inobtrusively fell out,
   enabling me to get an entire day's worth of work done without email
   interruptions.




Piscitello
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