RFC 985 (rfc985) - Page 2 of 23
Requirements for Internet gateways - draft
Alternative Format: Original Text Document
RFC 985 May 1986 Requirements for Internet Gateways -- DRAFT Larry Landweber, U Wisconsin landweber@rsch.wisc.edu Tony Lauck, DEC rhea!bergil!lauck@decwrl.arpa Dave Mills (Chairman), Linkabit mills@usc-isid.arpa Dennis Perry, DARPA/IPTO perry@ipto.arpa The subcommittee wishes to thank the following additional contributors and invited referees: Len Bosack, Stanford U/CISCO bosack@su-score.arpa Bob Braden, ISI braden@isi-braden.arpa Hans-Werner Braun, U Michigan hwb@gw.umich.edu Noel Chiappa, MIT/Proteon jnc@proteon.arpa Doug Comer, Purdue U dec@cs.purdue.edu Ira Fuchs, Princeton U fuchs%pucc.bitnet@wiscvm.wisc.edu Ed Krol, U Illinois krol%uiucvmd.bitnet@wiscvm.wisc.edu Barry Leiner, RIACS leiner@riacs.arpa Mike Muuss, BRL mike@brl.arpa Ron Natalie, BRL ron@brl.arpa Harvey Newman, CIT newman@cit-hex.arpa Jon Postel, ISI postel@usc-isib.arpa Marshall Rose, NRTC mrose@nrtc-gremlin.northrop.com Jeff Schiller, MIT jis@bitsy.mit.edu Lixia Zhang, MIT lixia@xx.lcs.mit.edu 1. Introduction The following sections are intended as an introduction and background for those unfamiliar with the DARPA Internet architecture and the Internet gateway model. General background and discussion on the Internet architecture and supporting protocol suite can be found in the DDN Protocol Handbook [25] and ARPANET Information Brochure [26], both available from the Network Information Center, SRI International, Menlo Park, CA 94025. Readers familiar with these concepts can proceed directly to Section 2. 1.1. The DARPA Internet Architecture The DARPA Internet system consists of a number of gateways and networks that collectively provide packet transport for hosts subscribing to the DARPA Internet protocol architecture. These protocols include the Internet Protocol (IP), Internet Control Message Protocol (ICMP), Transmission Control Protocol (TCP) and application protocols depending upon them. All protocols use IP as the basic packet-transport mechanism. IP is a datagram, or connectionless, service and includes provision for service specification, fragmentation/reassembly and security information. ICMP is considered an integral part of IP, although it is NTAG
