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Annotation of 43BSDReno/contrib/isode-beta/doc/monterey/monterey.tex, revision 1.1

1.1     ! root        1: % run this through SLiTeX
        !             2: 
        !             3: \documentstyle
        !             4:     [blackandwhite,landscape,oval,pagenumbers,small,plain]{NRslides}
        !             5: 
        !             6: \input trademark
        !             7: \def\tradeORGfont{\rm}
        !             8: \def\tradeNAMfont{\rm}
        !             9: 
        !            10: \raggedright
        !            11: 
        !            12: \begin{document}
        !            13: 
        !            14: \title {PROTOCOL ADVANCES 3:\\ ISO DEVELOPMENT ENVIRONMENT}
        !            15: \author        {Stephen E.~Kille\\ University College, London\\[0.15in]
        !            16:        Ronald G.~Minnich\\ University of Delaware\\[0.15in]
        !            17:        Marshall T.~Rose\\ Northrop Corporation}
        !            18: \date  {March 17, 1987}
        !            19: \maketitlepage
        !            20: 
        !            21: 
        !            22: \begin{bwslide}
        !            23: \part* {AGENDA}\bf
        !            24: 
        !            25: \begin{nrtc}
        !            26: \item  ISODE: INTRODUCTION AND STATUS REPORT (ROSE)
        !            27: 
        !            28: \item  PUTTING ISODE TO WORK (KILLE)
        !            29: 
        !            30: \item  ISODE AT THE UNIVERSITY OF DELAWARE (MINNICH)
        !            31: 
        !            32: \item  A STRATEGY FOR CONVERGENCE WITH ISO\\
        !            33:        (ANOTHER SERMON FROM MT.~ROSE?)
        !            34: \end{nrtc}
        !            35: \end{bwslide}
        !            36: 
        !            37: 
        !            38: \begin{bwslide}
        !            39: \part  {ISODE:\\ INTRODUCTION AND\\ STATUS REPORT}
        !            40: \end{bwslide}
        !            41: 
        !            42: 
        !            43: \begin{bwslide}
        !            44: \ctitle        {ISODE}
        !            45: 
        !            46: \begin{nrtc}
        !            47: \item  AN OPENLY AVAILABLE ISO DEVELOPMENT ENVIRONMENT
        !            48: 
        !            49: \item  ISO APPLICATION, PRESENTATION, SESSION, AND LAYERED TRANSPORT
        !            50: 
        !            51: \item  CODED ENTIRELY IN C
        !            52: 
        !            53: \item  OPERATING SYSTEMS
        !            54:     \begin{nrtc}
        !            55:     \item      4.2\bsd/ \unix/
        !            56: 
        !            57:     \item      SVR2 AT\&T \unix/ WITH AN EXCELAN \exos/~8044 TCP/IP PACKAGE
        !            58: 
        !            59:     \item      \vms/ AND \pcdos/ (STILL) UNDER DEVELOPMENT
        !            60:     \end{nrtc}
        !            61: \end{nrtc}
        !            62: \end{bwslide}
        !            63: 
        !            64: 
        !            65: \begin{bwslide}
        !            66: \ctitle        {MOTIVATION}
        !            67: 
        !            68: \begin{nrtc}
        !            69: \item  WANT TO BE CONSISTENT WITH ISO'S DIRECTION,
        !            70:        BUT WANT TO GET WORK DONE NOW
        !            71:     \begin{nrtc}
        !            72:     \item      MANY NEW, MAJOR INVESTMENTS BEING MADE IN CURRENT TECHNOLOGY
        !            73:                (e.g., NSFnet, NASA's NEW INTERNET, etc.)
        !            74:     \end{nrtc}
        !            75: 
        !            76: \item  CURRENTLY, TCP/IP HAS SEVERAL ADVANTAGES OVER TP4/IP:
        !            77:     \begin{nrtc}
        !            78:     \item      WORKING IS-IS (GATEWAY-GATEWAY) PROTOCOL
        !            79: 
        !            80:     \item      MATURITY
        !            81: 
        !            82:     \item      VENDOR SUPPORT
        !            83: 
        !            84:     \item      LARGE BODY OF EXPERTISE
        !            85:     \end{nrtc}
        !            86: 
        !            87: \item  WOULD LIKE TO WORK IN AN ISO ENVIRONMENT,
        !            88:        BUT WILL USE TCP/IP's STRENGTHS TO DO SO NOW
        !            89: \end{nrtc}
        !            90: \end{bwslide}
        !            91: 
        !            92: 
        !            93: \begin{bwslide}
        !            94: \ctitle        {THE APPLICATION ENVIRONMENT}
        !            95: 
        !            96: \vskip.15in
        !            97: \diagram[p]{figure1}
        !            98: \end{bwslide}
        !            99: 
        !           100: 
        !           101: \begin{note}\em
        !           102: other ASEs: RTSE, CCR, and so on
        !           103: 
        !           104: presentation: manage presentation contexts~---~abstract syntax and transfer
        !           105: 
        !           106: session: manage tokens, activities, checkpointing, and so on
        !           107: 
        !           108: about 35K lines of code
        !           109: \end{note}
        !           110: 
        !           111: 
        !           112: \begin{bwslide}
        !           113: \ctitle        {AN ALTERNATE ENVIRONMENT:\\ MHS ARCHITECTURE (c.~1984)}
        !           114: 
        !           115: \vskip.15in
        !           116: \diagram[p]{figure2}
        !           117: \end{bwslide}
        !           118: 
        !           119: 
        !           120: \begin{bwslide}
        !           121: \ctitle        {APPLICATIONS IN PROGRESS}
        !           122: 
        !           123: \begin{nrtc}
        !           124: \item  FTAM - FILE TRANSFER, ACCESS AND MANAGEMENT (NRTC)
        !           125: 
        !           126: \item  MHS - MESSAGE HANDLING SYSTEM (UCL)
        !           127: 
        !           128: \item  DS - DIRECTORY SERVICES (UCL)
        !           129: \end{nrtc}
        !           130: \end{bwslide}
        !           131: 
        !           132: 
        !           133: \begin{bwslide}
        !           134: \ctitle        {PERFORMANCE OBSERVATIONS}
        !           135: 
        !           136: \begin{nrtc}
        !           137: \item  THE 5-P PRINCIPLE:\\
        !           138:        PROPER PLANNING PREVENTS POOR PERFORMANCE
        !           139: 
        !           140: \item  INITIAL BENCHMARKING SUGGESTS THROUGHPUT RATES VERY CLOSE TO RAW TCP
        !           141:        FOR BOTH TRANSPORT AND SESSION ECHO AND SINK ENTITIES
        !           142: 
        !           143: \item  AT THE APPLICATION INTERFACE (ABOVE ACSE/ROSE),
        !           144:        THROUGHPUT IS ONLY 10\%-12\% WORSE THAN RAW TCP FOR DATA TRANSFER
        !           145: 
        !           146: \item  RESULTS PRIMARILY DUE TO MINIMIZED BYTE-COPYING BETWEEN LAYERS
        !           147: \end{nrtc}
        !           148: \end{bwslide}
        !           149: 
        !           150: 
        !           151: \begin{bwslide}
        !           152: \ctitle        {WHERE NEXT?}
        !           153: 
        !           154: \begin{nrtc}
        !           155: \item  VALIDATE/TEST AGAINST PURE ISO\\
        !           156:        (SOMEBODY ELSE'S IMPLEMENTATION)
        !           157: 
        !           158: \item  SYNCHRONIZE WITH GOSIP SPECIFICATION
        !           159: 
        !           160: \item  EXPAND SOME MODULES AS NEW APPLICATIONS REQUIRE
        !           161: 
        !           162: \item  CONVERGENCE WORK (DESCRIBED LATER)
        !           163: \end{nrtc}
        !           164: \end{bwslide}
        !           165: 
        !           166: 
        !           167: \begin{bwslide}
        !           168: \ctitle        {AVAILABILITY INFORMATION}
        !           169: 
        !           170: \begin{nrtc}
        !           171: \item  VERSION 2 AVAILABLE MARCH 15, 1987
        !           172: 
        !           173: \item  USPS: SEND TAPE AND PREPAID MAILER TO:
        !           174: \begin{small}
        !           175:     \[\begin{tabular}{l}
        !           176:        NORTHROP RESEARCH AND TECHNOLOGY CENTER\\
        !           177:        ATTN: AUTOMATION SCIENCES LABORATORY (0330/T30)\\
        !           178:        ONE RESEARCH PARK\\
        !           179:        PALOS VERDES PENINSULA, CA  90274\\
        !           180:        USA\\
        !           181:     \end{tabular}\]
        !           182: \end{small}
        !           183:     \begin{nrtc}
        !           184:     \item      ADD 3 POUNDS AND 1--1/2 INCHES FOR DOCUMENTATION SET
        !           185: 
        !           186:     \item      SEND ONLY POSTAGE, NO MONEY
        !           187: 
        !           188:     \item      TELCO: 213--544--5393
        !           189:     \end{nrtc}
        !           190: 
        !           191: \item  ANONYMOUS FTP: HOST louie.udel.edu, FILE portal/isode-2.tar
        !           192: \end{nrtc}
        !           193: \end{bwslide}
        !           194: 
        !           195: 
        !           196: \begin{bwslide}
        !           197: \part  {PUTTING ISODE TO WORK}\large\bf
        !           198: 
        !           199: \vskip-0.5in
        !           200: \[\begin{tabular}[t]{c}\large\bf
        !           201:     Stephen E.~Kille\\
        !           202:     Department of Computer Science\\
        !           203:     University College, London
        !           204: \end{tabular}\]
        !           205: \end{bwslide}
        !           206: 
        !           207: 
        !           208: \begin{note}\em
        !           209: with credits to:
        !           210: 
        !           211: \begin{nrtc}
        !           212: \item  at UCL:\\
        !           213:        George G.~Michaelson, Stephen E.~Easterbrook, Thomas Woo
        !           214: 
        !           215: \item  at the Department of Computer Science, Nottingham University:\\
        !           216:        Julian P.~Onions
        !           217: \end{nrtc}
        !           218: \end{note}
        !           219: 
        !           220: 
        !           221: \begin{bwslide}
        !           222: \ctitle        {OVERVIEW}
        !           223: 
        !           224: \begin{nrtc}
        !           225: \item  DISCUSSION OF WORK AT UCL USING ISODE
        !           226: 
        !           227: \item  WORK ON DISTRIBUTED APPLICATIONS
        !           228: 
        !           229: \item  EMPHASIS ON MESSAGE HANDLING AND DIRECTORY SERVICES
        !           230: 
        !           231: \item  FOCUS ON WORK ALIGNED WITH INTERNATIONAL STANDARDS
        !           232: 
        !           233: \item  AIM TO DESCRIBE HOW ISODE FACILITATES THIS WORK
        !           234: \end{nrtc}
        !           235: \end{bwslide}
        !           236: 
        !           237: 
        !           238: \begin{bwslide}
        !           239: \ctitle        {OSI INFRASTRUCTURE}
        !           240: 
        !           241: \begin{nrtc}
        !           242: \item  UCL RUNS A WIDE VARIETY OF UNIX SYSTEMS
        !           243: 
        !           244: \item  NEEDS OSI ENVIRONMENT WHICH CAN OPERATE ON ALL OF THESE,
        !           245:        FOR WORKING IN BOTH LANs AND WANs
        !           246: 
        !           247: \item  CURRENTLY USE TCP/IP OVER THE LAN,
        !           248:        AS THIS IS THE ONLY PROTOCOL COMMON TO ALL OF THE MACHINES IN QUESTION
        !           249: 
        !           250: \item  TP0/X.25 WILL BE USED FOR WAN ACCESS
        !           251: 
        !           252: \item  TP4 MAY ALSO BE USED (IF WE HAVE TO)
        !           253: \end{nrtc}
        !           254: \end{bwslide}
        !           255: 
        !           256: 
        !           257: \begin{bwslide}
        !           258: \ctitle        {ADVANTAGES OF TP0/X.25}
        !           259: 
        !           260: \begin{nrtc}
        !           261: \item  THE PREFERRED EUROPEAN APPROACH
        !           262: 
        !           263: \item  EFFICIENT UTILIZATION OF PTT X.25 SERVICES
        !           264: 
        !           265: \item  UTILIZATION OF X.25 HARDWARE TO REDUCE CPU LOAD
        !           266: 
        !           267: \item  WILL ALLOW FOR EXTENSIVE TESTING OF ISODE AGAINST OTHER OSI
        !           268:        IMPLEMENTATIONS AT UCL AND ELSEWHERE
        !           269: 
        !           270: \item  MIGRATION TO USE OF X.25 OVER IEEE~802 LLC
        !           271: \end{nrtc}
        !           272: \end{bwslide}
        !           273: 
        !           274: 
        !           275: \begin{bwslide}
        !           276: \ctitle        {ABSTRACT SYNTAX NOTATION 1 (ASN.1)}
        !           277: 
        !           278: \begin{nrtc}
        !           279: \item  REPRESENTATION CURRENTLY USED BY ALL OSI APPLICATIONS
        !           280: 
        !           281: \item  RICH, EXTENSIBLE SYNTAX
        !           282: 
        !           283: \item  USEFUL FOR SPECIFICATION OF NEW PROTOCOLS
        !           284:     \begin{nrtc}
        !           285:     \item      CLEAR TO READ SPECIFICATIONS
        !           286: 
        !           287:     \item      NOT TIED TO MACHINE-ORIENTED STRUCTURES AND RESTRICTIONS
        !           288:     \end{nrtc}
        !           289: \end{nrtc}
        !           290: \end{bwslide}
        !           291: 
        !           292: 
        !           293: \begin{bwslide}
        !           294: \ctitle        {REMOTE OPERATIONS SERVICE (ROS)}
        !           295: 
        !           296: \begin{nrtc}
        !           297: \item  STANDARDIZED MECHANISM FOR SPECIFYING TRANSACTIONS
        !           298: 
        !           299: \item  MAKES FULL POWER OF ASN.1 AVAILABLE
        !           300: 
        !           301: \item  USED IN MANY INTERESTING OSI APPLICATIONS
        !           302:     \begin{nrtc}
        !           303:     \item      MESSAGING
        !           304: 
        !           305:     \item      DIRECTORY SERVICES
        !           306: 
        !           307:     \item      NETWORK MANAGEMENT
        !           308: 
        !           309:     \item      REMOTE DATABASE ACCESS
        !           310:     \end{nrtc}
        !           311: \end{nrtc}
        !           312: \end{bwslide}
        !           313: 
        !           314: 
        !           315: \begin{bwslide}
        !           316: \ctitle{WHY ISODE}
        !           317: 
        !           318: \begin{nrtc}
        !           319: \item  FULL AND UP-TO-DATE IMPLEMENTATION OF OSI LAYERS
        !           320: 
        !           321: \item  REMOTE OPERATIONS SERVICE
        !           322: 
        !           323: \item  ASN.1 ELEMENT HANDLING
        !           324: 
        !           325: \item  COMPILER FOR DECODING ASN.1 (PEPY)
        !           326: 
        !           327: \item  FLEXIBILITY TO USE DIFFERENT TRANSPORT SERVICES
        !           328: 
        !           329: \item  GOOD PERFORMANCE
        !           330: \end{nrtc}
        !           331: \end{bwslide}
        !           332: 
        !           333: 
        !           334: \begin{bwslide}
        !           335: \ctitle{RARE DIRECTORY SERVICES}
        !           336: 
        !           337: \begin{nrtc}
        !           338: \item  R\'{E}SEAUX ASSOCI\'{E}S POUR LA RECHERCHE EUROP\'{E}ENNE (RARE)
        !           339: 
        !           340: \item  TRANSLATION: EUROPEAN ACADEMIC RESEARCH NETWORK
        !           341: 
        !           342: \item  AN ASSOCIATION OF THE VARIOUS NATIONAL RESEARCH NETS
        !           343: 
        !           344: \item  WISH TO PROVIDE EARLY DIRECTORY SERVICES, UTILIZING
        !           345:        A CENTRAL DATABASE (LIKE THE ARPA ``WHOIS'')
        !           346: 
        !           347: \item  CONTAINS FACILITY, PROJECT, AND PERSON DATA
        !           348: 
        !           349: \item  THE DATA IS MORE VALUABLE THAN THE INITIAL SERVICE
        !           350: 
        !           351: \item  DATA STANDARD FORMAT IS DESIRED
        !           352: \end{nrtc}
        !           353: \end{bwslide}
        !           354: 
        !           355: 
        !           356: \begin{bwslide}
        !           357: \ctitle{RARE ASN.1 STRUCTURE}
        !           358: 
        !           359: \begin{nrtc}
        !           360: \item  UCL HAS SPECIFIED A FIRST VERSIONS OF THE DATA STRUCTURE
        !           361: 
        !           362: \item  ASN.1 USED
        !           363: 
        !           364: \item  CAN REPRESENT DETAILED STRUCTURE, WHICH WILL BE USEFUL IN
        !           365:        LATER DISTRIBUTED DIRECTORY SERVICES
        !           366: 
        !           367: \item  PEPY (ISODE) MADE ASN.1 VERIFICATION STRAIGHTFORWARD IN THE
        !           368:        DESIGN PHASE
        !           369: 
        !           370: \item  ALLOWED EASY IMPLEMENTATION OF ``PRETTY PRINTER'' AND
        !           371:        ENCODING OF TEST DATA
        !           372: 
        !           373: \item  IS LIKELY TO BE USED TO SUPPORT THE WIDER INTRODUCTION OF
        !           374:        THIS FORMAT FOR ENCODING AND DECODING
        !           375: \end{nrtc}
        !           376: \end{bwslide}
        !           377: 
        !           378: 
        !           379: \begin{bwslide}
        !           380: \ctitle{NRS LOOKUP PROTOCOL}
        !           381: 
        !           382: \begin{nrtc}
        !           383: \item  NAME REGISTRATION SCHEME (NRS) IS A DATABASE OF THE HOSTS
        !           384:        (DOMAINS) IN THE UK ACADEMIC COMMUNITY.
        !           385: 
        !           386: \item  CURRENTLY CONTAINS ABOUT 1000 HOSTS, AND IS GROWING RAPIDLY
        !           387: 
        !           388: \item  THE CENTRALIZED DATABASE HAS DISTRIBUTED MANAGEMENT AND
        !           389:        IS WIDELY REPLICATED
        !           390: 
        !           391: \item  NRS LOOKUP PROTOCOL SPECIFIES A LIGHTWEIGHT TRANSACTION
        !           392:        OVER X.25, TO ENABLE LOOKUP OF INFORMATION IN THE NRS
        !           393: 
        !           394: \item  THE PACKET FORMATS ARE SPECIFIED IN ASN.1
        !           395: 
        !           396: \item  HANDLES BOTH CURRENT ``COLOURED BOOK'' APPLICATIONS AND
        !           397:        PLANNED OSI APPLICATIONS
        !           398: \end{nrtc}
        !           399: \end{bwslide}
        !           400: 
        !           401: 
        !           402: \begin{bwslide}
        !           403: \ctitle{NRS LOOKUP PROTOCOL IMPLEMENTATION}
        !           404: 
        !           405: \begin{nrtc}
        !           406: \item  IMPLEMENTATION DONE IN PARALLEL WITH FINAL WORK ON SPECIFICATION
        !           407: 
        !           408: \item  3RD YEAR STUDENT PROJECT (3 MONTHS)
        !           409: 
        !           410: \item  PEPY FOUND A NUMBER OF ERRORS IN THE PROTOCOL SPECIFICATION
        !           411: 
        !           412: \item  PEPY ALLOWED A FULL PROTOCOL DECODER TO BE BUILT WITH MINIMUM EFFORT
        !           413: 
        !           414: \item  EARLY RESULTS SUGGEST GOOD PERFORMANCE
        !           415: \end{nrtc}
        !           416: \end{bwslide}
        !           417: 
        !           418: 
        !           419: \begin{bwslide}
        !           420: \ctitle{MESSAGE HANDLING}
        !           421: 
        !           422: \begin{nrtc}
        !           423: \item  UCL AND NOTTINGHAM UNIVERSITY ARE DEVELOPING AN X.400 SYSTEM (PP)
        !           424: 
        !           425: \item  OWES MANY OF ITS DESIGN IDEAS TO MMDF (THE CSNET MESSAGE SYSTEM)
        !           426: 
        !           427: \item  FLEXIBLE HANDLING OF MULTI-MEDIA
        !           428: 
        !           429: \item  PROTOCOL AND FORMAT CONVERSION
        !           430: 
        !           431: \item  UTILIZATION WITH DIRECTORY SERVICES
        !           432: 
        !           433: \item  MAY BE DISTRIBUTED WITH LATER VERSIONS OF ISODE
        !           434: \end{nrtc}
        !           435: \end{bwslide}
        !           436: 
        !           437: 
        !           438: \begin{bwslide}
        !           439: \ctitle{CURRENT USE OF ISODE IN PP}
        !           440: 
        !           441: \begin{nrtc}
        !           442: \item  MOST OF THE EARLY WORK HAS NOT NEEDED ISODE
        !           443: 
        !           444: \item  PEPY CAN HANDLE P1 AND P2
        !           445: 
        !           446: \item  INTEGRATION OF P1 AND ISODE'S RELIABLE TRANSFER SERVICE (RTS) HAS
        !           447:        STARTED AND HAS BEEN SATISFYINGLY STRAIGHTFORWARD
        !           448: \end{nrtc}
        !           449: \end{bwslide}
        !           450: 
        !           451: 
        !           452: \begin{bwslide}
        !           453: \ctitle{PLANNED USE OF ISODE IN PP}
        !           454: 
        !           455: \begin{nrtc}
        !           456: \item  RFC987 WILL BE IMPLEMENTED, TO PROVIDE FULL MAPPINGS
        !           457:        BETWEEN X.400 AND RFC822 MAIL
        !           458: 
        !           459: \item  QUEUE MANAGEMENT WILL UTILIZE A ROS PROTOCOL
        !           460:     \begin{nrtc}
        !           461:     \item      THIS WILL PROVIDE HIGH FUNCTIONALITY, AND ALLOW FOR REMOTE
        !           462:                MANAGEMENT
        !           463:     \end{nrtc}
        !           464: 
        !           465: \item  A SYSTEM FOR MANAGING LOCAL LISTS WILL BE SPECIFIED IN ROS
        !           466: \end{nrtc}
        !           467: \end{bwslide}
        !           468: 
        !           469: 
        !           470: \begin{bwslide}
        !           471: \ctitle{UCL DIRECTORIES}
        !           472: 
        !           473: \begin{nrtc}
        !           474: \item  HAVE ESTABLISHED DATABASE OF UCL USERS IN CENTRAL DATABASE
        !           475:     \begin{nrtc}
        !           476:     \item      DATA SEEMS TO BE A PRE-REQUISITE OF A DIRECTORY SERVICE!
        !           477:     \end{nrtc}
        !           478: 
        !           479: \item  ACCESS USING ROS TO ALLOW INFORMATION TO BE UPDATED AND QUERIED
        !           480: 
        !           481: \item  GENERATION OF LOCAL MAIL TABLES IS AUTOMATED FROM THIS DATABASE
        !           482: 
        !           483: \item  ALL UCL PASSWORD FILES ARE MANAGED FROM THIS DATABASE
        !           484:   \begin{nrtc}\small
        !           485:     \item      MUCH HARDER THAN WE THOUGHT
        !           486: 
        !           487:     \item      ALL PASSWORD FILE RELATED TOOLS (passwd(1), chsh(1), etc.)
        !           488:                EMULATED OVER ROS
        !           489: 
        !           490:     \item      SOME EXTENSIONS
        !           491:                (E.G., ABILITY TO CHANGE PASSWORDS ON ALL MACHINES)
        !           492: 
        !           493:     \item      PASSWORD FILES PULLED BY MACHINES USING ROS
        !           494: 
        !           495:     \item      UCL SPECIFIC (SIMPLE) APPROACH TO AUTHENTICATION
        !           496:     \end{nrtc}
        !           497: 
        !           498: \item  CURRENT SYSTEM IS SEEN AS A STEPPING STONE TO FULL OSI
        !           499:        DIRECTORY SERVICES
        !           500: \end{nrtc}
        !           501: \end{bwslide}
        !           502: 
        !           503: 
        !           504: \begin{bwslide}
        !           505: \ctitle{WORK AT UCL TO EXTEND ISODE}
        !           506: 
        !           507: \begin{nrtc}
        !           508: \item  TOOLS TO FACILITATE DEVELOPMENT OF APPLICATIONS ARE SEEN AS CRITICAL
        !           509: 
        !           510: \item  CURRENTLY EXTENDING PEPY TO PERFORM ENCODING AS WELL AS DECODING
        !           511: 
        !           512: \item  WILL EXTEND PEPY TO SUPPORT ROS IN AN AUTOMATIC MANNER,
        !           513:        MIXING ENCODING AND DECODING FUNCTIONS
        !           514: 
        !           515: \item  ENABLE ROS TO BE USED IN A MANNER VERY LIKE
        !           516:        SOME REMOTE PROCEDURE CALL APPROACHES
        !           517: \end{nrtc}
        !           518: \end{bwslide}
        !           519: 
        !           520: 
        !           521: \begin{bwslide}
        !           522: \part  {ISODE AT\\ THE UNIVERSITY OF DELAWARE}\bf
        !           523: 
        !           524: \vskip-0.5in
        !           525: \[\begin{tabular}[t]{c}\large\bf
        !           526:     Ronald G.~Minnich\\
        !           527:     Dept. of Electrical Engineering\\
        !           528:     University of Delaware
        !           529: \end{tabular}\hskip1em plus.17fil
        !           530: \begin{tabular}[t]{c}\large\bf
        !           531:     David J.~Farber\\
        !           532:     Dept. of Electrical Engineering\\
        !           533:     Dept. of Computer and Information Sciences\\
        !           534:     University of Delaware
        !           535: \end{tabular}\]
        !           536: \end{bwslide}
        !           537: 
        !           538: 
        !           539: \begin{bwslide}
        !           540: \ctitle        {STANDARD DISCLAIMER}
        !           541: 
        !           542: \begin{nrtc}
        !           543: \item  ISODE HAS JUST COME INTO USE AT UDEL AS OF 1987 
        !           544: 
        !           545: \item  WE KNOW ABOUT ISO BUT HAVE NEVER USED ISO OR ISODE~---
        !           546:     \begin{nrtc}
        !           547:     \item      WE ARE NOT ALONE IN THAT; THAT IS WHY ISODE EXISTS
        !           548:     \end{nrtc}
        !           549: \end{nrtc}
        !           550: \end{bwslide}
        !           551: 
        !           552: 
        !           553: \begin{bwslide}
        !           554: \ctitle        {ISODE AFFECTS THREE AREAS}
        !           555: 
        !           556: \begin{nrtc}
        !           557: \item  EXPERIMENTAL COMPUTER NETWORK RESEARCH
        !           558: 
        !           559: \item  SYSTEMS PROGRAMMING
        !           560: 
        !           561: \item  APPLICATIONS PROGRAMMING
        !           562: \end{nrtc}
        !           563: \end{bwslide}
        !           564: 
        !           565: 
        !           566: \begin{bwslide}
        !           567: \ctitle        {IMPLICATIONS OF ISO FOR OUR NETWORK RESEARCH}
        !           568: 
        !           569: \begin{nrtc}
        !           570: \item  IF THE ISO MODEL IS THE FUTURE,
        !           571:        THEN xxxNET HAD BETTER SUPPORT IT EFFECTIVELY
        !           572: 
        !           573: \item  WE HAVE SEEN A SIMILAR PHENOMENON WITH UNIX AND COMPUTER ARCHITECTURE
        !           574: \end{nrtc}
        !           575: \end{bwslide}
        !           576: 
        !           577: \begin{bwslide}
        !           578: \ctitle        {EXPERIMENTAL COMPUTER NETWORK RESEARCH}
        !           579: 
        !           580: \begin{nrtc}
        !           581: \item  MEMNET[DELP86]~---~LARGE PHYSICALLY DISTRIBUTED MEMORY CONNECTED BY A
        !           582:        TOKEN RING
        !           583:     \begin{nrtc}
        !           584:     \item      IT IS UNDER CONSTRUCTION NOW AND SIMULATIONS PREDICT VERY HIGH
        !           585:                THROUGHPUT
        !           586: 
        !           587:     \item      WE ARE CONSIDERING PUTTING ISODE ON TOP OF MEMNET;
        !           588:                MEMNET BECOMES THE TRANSPORT
        !           589: 
        !           590:     \item      WE CONSIDER THIS A GOOD TEST OF MEMNET'S CAPABILITIES AS WELL
        !           591:                AS BEING POTENTIALLY WORTHWHILE IN AND OF ITSELF
        !           592:     \end{nrtc}
        !           593: 
        !           594: \item  NOAHNET[PARULKAR86]~---~FLOOD NETWORK
        !           595:     \begin{nrtc}
        !           596:     \item      WHAT IMPLICATIONS DOES THE ISO MODEL HAVE FOR NOAHNET?
        !           597:     \end{nrtc}
        !           598: \end{nrtc}
        !           599: \end{bwslide}
        !           600: 
        !           601: 
        !           602: \begin{bwslide}
        !           603: \ctitle        {ISO FOR SYSTEMS PROGRAMMING}
        !           604: 
        !           605: \begin{nrtc}
        !           606: \item  WE NEED TO LEARN HOW TO USE IT FOR `HOUSEKEEPING'\\
        !           607:        (e.g. KERNAL DATA STRUCTURE MONITORS, FONT LOADERS,\\
        !           608:        MAN PAGE PROGRAMS, etc.)
        !           609: 
        !           610: \item  WHERE WE HAVE BEEN USING THE UNSTRUCTURED ``PIPE''-LIKE CHANNEL
        !           611:        PROVIDED BY TCP/IP, WE NOW USE THE HIGHER-LEVEL ISO CONSTRUCTS
        !           612: 
        !           613: \item  A LOGICAL CONSEQUENCE OF THE ABOVE IS THAT WE WILL NOT NEED AS
        !           614:        MANY CUSTOM PROTOCOLS (e.g., rdump, rman, etc.)
        !           615:        AND WILL THUS (WE HOPE) HAVE LESS CONFUSION WHEN AN 'r'-PROGRAM
        !           616:        BREAKS (AND THEY HAVE~---~EXAMPLE ON REQUEST)
        !           617: 
        !           618: \item  ISODE AND PEPY MAKE THE PROCESS MUCH EASIER
        !           619: \end{nrtc}
        !           620: \end{bwslide}
        !           621: 
        !           622: 
        !           623: \begin{note}\em
        !           624: example slides here...
        !           625: \end{note}
        !           626: 
        !           627: \begin{bwslide}
        !           628: \ctitle        {WHERE DO I SIGN?}
        !           629: 
        !           630: \begin{nrtc}
        !           631: \item  BUT: WE HAVE TO CLIMB A STEEP LEARNING CURVE
        !           632: 
        !           633: \item  MUCH BIGGER BUT: WE HAVE TO CONVINCE OTHERS TO CLIMB IT TOO
        !           634: \end{nrtc}
        !           635: \end{bwslide}
        !           636: 
        !           637: 
        !           638: \begin{bwslide}
        !           639: \ctitle        {ISO FOR THE APPLICATIONS PROGRAMMER}
        !           640: 
        !           641: \begin{nrtc}
        !           642: \item  MAIL SYSTEMS
        !           643: 
        !           644: \item  MULTI-MEDIA SYSTEMS (E.G. NETWORKED APA DISPLAYS)
        !           645: 
        !           646: \item  NETWORK MONITORING PROGRAMS[AMER87]
        !           647: 
        !           648: \item  IMAGE PROCESSING
        !           649: 
        !           650: \item  SPEECH PROCESSING
        !           651: 
        !           652: \item  NETWORKED PCs~---~USING PCs TO HELP MANAGE VAX RESOURCES
        !           653: \end{nrtc}
        !           654: \end{bwslide}
        !           655: 
        !           656: 
        !           657: \begin{bwslide}
        !           658: \ctitle        {TWO PROBLEMS}
        !           659: \begin{nrtc}
        !           660: \item  CONVINCING VERY BUSY PEOPLE TO TAKE THE TIME TO LEARN IT
        !           661: 
        !           662: \item  ONCE THEY LEARN IT, DO THEY FIND IT BOTH USABLE AND USEFUL? 
        !           663: \end{nrtc}
        !           664: 
        !           665: SO FAR, AT UDEL, THERE IS NOT ENOUGH TIME TO TELL
        !           666: \end{bwslide}
        !           667: 
        !           668: 
        !           669: \begin{bwslide}
        !           670: \ctitle        {CONCLUSIONS}
        !           671: 
        !           672: \begin{nrtc}
        !           673: \item   EXPERIMENTAL NETWORKS AT UDEL WILL SUPPORT ISODE
        !           674:     \begin{nrtc}
        !           675:     \item      BOTH AS A TEST OF ISODE\\ AND AS A TEST OF THE NETWORK
        !           676:     \end{nrtc}
        !           677: 
        !           678: \item  WE ARE PLANNING TO USE ISODE FOR SYSTEM PROGRAMS THAT 
        !           679:        PREVIOUSLY WOULD HAVE BEEN IMPLEMENTED IN THE 'r'-PROGRAM STYLE OR
        !           680:        THAT COULD NOT HAVE BEEN EASILY WRITTEN AT ALL
        !           681: 
        !           682: \item  WE ARE ENCOURAGING OTHER RESEARCHERS AT UDEL TO USE ISODE FOR THEIR
        !           683:        APPLICATIONS
        !           684: \end{nrtc}
        !           685: \end{bwslide}
        !           686: 
        !           687: 
        !           688: \begin{bwslide}
        !           689: \part  {A STRATEGY FOR CONVERGENCE WITH ISO}\bf
        !           690: 
        !           691: \vskip-0.5in
        !           692: \[\begin{tabular}[t]{c}\large\bf
        !           693:     Marshall T.~Rose\\
        !           694:     Computer Science Laboratory\\
        !           695:     Northrop Research and Technology Center
        !           696: \end{tabular}\]
        !           697: \end{bwslide}
        !           698: 
        !           699: 
        !           700: \begin{bwslide}
        !           701: \ctitle        {THE PROBLEM}
        !           702: 
        !           703: \begin{nrtc}
        !           704: \item  TCP/IP IS HERE NOW AND IT WORKS
        !           705: 
        !           706: \item  ISO IS INEVITABLE!
        !           707: 
        !           708: \item  HOW DO WE GET TO THERE FROM HERE?
        !           709: \end{nrtc}
        !           710: \end{bwslide}
        !           711: 
        !           712: 
        !           713: \begin{bwslide}
        !           714: \ctitle        {PREMISES}
        !           715: 
        !           716: \begin{nrtc}
        !           717: \item  START WITH AN EXISTING TCP/IP INTERNET
        !           718: 
        !           719: \item  ADD SOME ISO-ONLY HOSTS/NETWORKS
        !           720: 
        !           721: \item  MAKE NO MODIFICATIONS TO ISO-ONLY HOSTS
        !           722:        (AND MINIMIZE CHANGES TO TCP/IP HOSTS)
        !           723: \end{nrtc}
        !           724: \end{bwslide}
        !           725: 
        !           726: 
        !           727: \begin{bwslide}
        !           728: \ctitle        {DESIRED INTEROPERABILITY}
        !           729: 
        !           730: \begin{nrtc}
        !           731: \item  WANT SERVICES BETWEEN END-SYSTEMS AT HIGHER-LEVELS
        !           732: 
        !           733: \item  AVOID APPLICATION-LEVEL GATEWAYS
        !           734: 
        !           735: \item  IMPLIES INTEROPERABILITY AT TRANSPORT LAYER AND ABOVE
        !           736: 
        !           737: \item  CONVERGE ON HIGHER-LEVELS IN THE ISO SUITE
        !           738: 
        !           739: \item  NEEDED: VIRTUAL TRANSPORT SERVICE
        !           740: \end{nrtc}
        !           741: \end{bwslide}
        !           742: 
        !           743: 
        !           744: \begin{bwslide}
        !           745: \ctitle        {TCP TRANSPORT SERVICE}
        !           746: 
        !           747: \vspace{0.25in}
        !           748: \diagram[p]{figure3a}
        !           749: \end{bwslide}
        !           750: 
        !           751: 
        !           752: \begin{bwslide}
        !           753: \ctitle        {ISO TRANSPORT SERVICE}
        !           754: 
        !           755: \vspace{0.25in}
        !           756: \diagram[p]{figure3b}
        !           757: \end{bwslide}
        !           758: 
        !           759: 
        !           760: \begin{bwslide}
        !           761: \ctitle        {A CONVERGENCE STRATEGY}
        !           762: 
        !           763: \begin{nrtc}
        !           764: \item  NEED TWO THINGS:
        !           765:     \begin{nrtc}
        !           766:     \item      HIGHER-LEVEL ISO SERVICES FOR TCP/IP HOSTS
        !           767: 
        !           768:     \item      ISO-IP ENCAPSULATION ON DDN-IP
        !           769:     \end{nrtc}
        !           770: \end{nrtc}
        !           771: \end{bwslide}
        !           772: 
        !           773: 
        !           774: \begin{bwslide}
        !           775: \ctitle        {VIRTUAL ISO TRANSPORT SERVICE}
        !           776: 
        !           777: \vspace{0.25in}
        !           778: \diagram[p]{figure3c}
        !           779: \end{bwslide}
        !           780: 
        !           781: 
        !           782: \begin{bwslide}
        !           783: \ctitle        {ISO DEVELOPMENT ENVIRONMENT}
        !           784: 
        !           785: \begin{nrtc}
        !           786: \item  PROVIDES HIGHER-LEVEL ISO SERVICES FOR TCP/IP HOSTS
        !           787: 
        !           788: \item  A MAGIC-BOX OFFERS TP4 SERVICE OVER TCP (RFC983)
        !           789: 
        !           790: \item  GAIN EXPERIENCE WITH THE ISO SUITE
        !           791: \end{nrtc}
        !           792: \end{bwslide}
        !           793: 
        !           794: 
        !           795: \begin{bwslide}
        !           796: \ctitle        {ISO TRANSPORT SERVICES ON TOP OF THE TCP}
        !           797: 
        !           798: \diagram[p]{figure4}
        !           799: \end{bwslide}
        !           800: 
        !           801: 
        !           802: \begin{bwslide}
        !           803: \ctitle        {MIXED ISO TRANSPORT SERVICE}
        !           804: 
        !           805: \vspace{0.25in}
        !           806: \diagram[p]{figure3d}
        !           807: \end{bwslide}
        !           808: 
        !           809: 
        !           810: \begin{bwslide}
        !           811: \ctitle        {DUAL-IP ``GATEWAYS''}
        !           812: 
        !           813: \begin{nrtc}
        !           814: \item  NEED TWO MORE THINGS:
        !           815:     \begin{nrtc}
        !           816:     \item      PUT A REAL TP4 AND ISO-IP IN THE HYBRID HOST
        !           817: 
        !           818:     \item      WITH ISO-IP ENCAPSULATED IN DDN-IP
        !           819:     \end{nrtc}
        !           820: \end{nrtc}
        !           821: \end{bwslide}
        !           822: 
        !           823: 
        !           824: \begin{bwslide}
        !           825: \ctitle        {HYBRID HOST}
        !           826: 
        !           827: \diagram[p]{figure5}
        !           828: \end{bwslide}
        !           829: 
        !           830: 
        !           831: \begin{bwslide}
        !           832: \ctitle        {THE BIG PICTURE}
        !           833: 
        !           834: \vspace{0.25in}
        !           835: \diagram[p]{figure6}
        !           836: \end{bwslide}
        !           837: 
        !           838: 
        !           839: \begin{bwslide}
        !           840: \ctitle        {VIRTUAL TRANSPORT SERVICES (REVIEW)}
        !           841: 
        !           842: \vspace{0.25in}
        !           843: \diagram[p]{figure7}
        !           844: \end{bwslide}
        !           845: 
        !           846: 
        !           847: \begin{note}\em
        !           848: to migrate: just stop buying tcp/ip when both of these are done
        !           849: 
        !           850: you need an application gateway to go from tcp/ip-only to iso-only
        !           851: (essential for mail, probably not needed otherwise)
        !           852: \end{note}
        !           853: 
        !           854: 
        !           855: \end{document}

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