Internetworking With TCP/IP vol 1 -- Part 1

Internetworking With TCP/IP Douglas Comer Computer Science Department Purdue University 250 N. University Street West Lafayette, IN 47907-2066 http://www.cs.purdue.edu/people/comer  Copyright 2005. All rights reserved. This document may not be reproduced by any means without written consent of the author. PART I COURSE OVERVIEW AND INTRODUCTION Internetworking With TCP/IP vol 1 -- Part 1 1 2005 Topic And Scope Internetworking: an overview of concepts, terminology, and technology underlying the TCP/IP Internet protocol suite and the architecture of an internet. Internetworking With TCP/IP vol 1 -- Part 1 2 2005 You Will Learn d Terminology (including acronyms) d Concepts and principles – The underlying model – Encapsulation – End-to-end paradigm d Naming and addressing d Functions of protocols including ARP, IP, TCP, UDP, SMTP, FTP, DHCP, and more d Layering model Internetworking With TCP/IP vol 1 -- Part 1 3 2005 You Will Learn (continued) d Internet architecture and routing d Applications Internetworking With TCP/IP vol 1 -- Part 1 4 2005 What You Will NOT Learn d A list of vendors, hardware products, software products, services, comparisons, or prices d Alternative internetworking technologies (they have all disappeared!) Internetworking With TCP/IP vol 1 -- Part 1 5 2005 Schedule Of Topics d Introduction d Review of – Network hardware – Physical addressing d Internet model and concept d Internet (IP) addresses d Higher-level protocols and the layering principle d Examples of internet architecture Internetworking With TCP/IP vol 1 -- Part 1 6 2005 Schedule Of Topics (continued) d Routing update protocols d Application-layer protocols Internetworking With TCP/IP vol 1 -- Part 1 7 2005 Why Study TCP/IP? d The Internet is everywhere d Most applications are distributed Internetworking With TCP/IP vol 1 -- Part 1 8 2005 Remainder Of This Section d History of Internet protocols (TCP/IP) d Organizations d Documents Internetworking With TCP/IP vol 1 -- Part 1 9 2005 [...]... http://www.isoc.org/ietfreport/ Internetworking With TCP/IP vol 1 Part 1 26 2005 Summary d TCP/IP is vendor-independent d Standards set by IETF d Protocol standards found in document series known as Request For Comments (RFCs) d Standards found in subset of RFCs labeled STD Internetworking With TCP/IP vol 1 Part 1 27 2005 Questions? PART II REVIEW OF NETWORK HARDWARE AND PHYSICAL ADDRESSING Internetworking With TCP/IP vol 1. .. Documents – Major revision/clarification of most TCP/IP protocols – RFC 11 22 (Communication Layers) – RFC 11 23 (Application & Support) – RFC 11 27 (Perspective on 11 22-3) d Router Requirements – Major specification of protocols used in IP gateways (routers) – RFC 18 12 (updated by RFC 2644) Internetworking With TCP/IP vol 1 Part 1 21 2005 Special Subsets Of RFCs d For Your Information (FYI) – Provide... For Comments (RFCs) Internetworking With TCP/IP vol 1 Part 1 17 2005 RFCs d Series of reports that include – TCP/IP protocols – The Internet – Related technologies d Edited, but not peer-reviewed like scientific journals d Contain: – Proposals – Surveys and measurements – Protocol standards Internetworking With TCP/IP vol 1 Part 1 18 2005 RFCs d Series of reports that include – TCP/IP protocols –... Jokes! Internetworking With TCP/IP vol 1 Part 1 19 2005 RFCs (continued) d Numbered in chronological order d Revised document reissued under new number d Numbers ending in 99 reserved for summary of previous 10 0 RFCs d Index and all RFCs available on-line Internetworking With TCP/IP vol 1 Part 1 20 2005 Requirements RFCs d Host Requirements Documents – Major revision/clarification of most TCP/IP. .. membership d Funded by commercial members d URL is http://w3c.org Internetworking With TCP/IP vol 1 Part 1 15 2005 Internet Society d Organization that promotes the use of the Internet d Formed in 19 92 d Not-for-profit d Governed by a board of trustees d Members worldwide d URL is http://www.isoc.org Internetworking With TCP/IP vol 1 Part 1 16 2005 Protocol Specifications And Documents d Protocols documented... in 19 89 and 19 93 d Merged into the Internet Society in 19 92 Internetworking With TCP/IP vol 1 Part 1 11 2005 Components Of The IAB Organization d IAB (Internet Architecture Board) – Board that oversees and arbitrates – URL is http://www.iab.org/iab d IRTF (Internet Research Task Force) – Coordinates research on TCP/IP and internetworking – Virtually defunct, but may re-emerge Internetworking With TCP/IP. .. IETF web site – Issued periodically – Current version is RFC 3600 Internetworking With TCP/IP vol 1 Part 1 24 2005 Internet Drafts d Preliminary RFC documents d Often used by IETF working groups d Available on-line from several repositories d Either become RFCs within six months or disappear Internetworking With TCP/IP vol 1 Part 1 25 2005 Obtaining RFCs And Internet Drafts d Available via – Email... beginners d Best Current Practices (BCP) – Engineering hints – Reviewed and approved by IESG Internetworking With TCP/IP vol 1 Part 1 22 2005 A Note About RFCs d RFCs span two extremes – Protocol standards – Jokes d Question: how does one know which are standards? Internetworking With TCP/IP vol 1 Part 1 23 2005 TCP/IP Standards (STD) d Set by vote of IETF d Documented in subset of RFCs d Found in Internet... ADDRESSING Internetworking With TCP/IP vol 1 Part 2 1 2005 The TCP/IP Concept d Use existing network hardware d Interconnect networks d Add abstractions to hide heterogeneity Internetworking With TCP/IP vol 1 Part 2 2 2005 The Challenge d Accommodate all possible network hardware d Question: what kinds of hardware exist? Internetworking With TCP/IP vol 1 Part 2 3 2005 Network Hardware Review d We... vol 1 Part 1 12 2005 Components Of The IAB Organization (continued) d IETF (Internet Engineering Task Force) – Coordinates protocol and Internet engineering – Headed by Internet Engineering Steering Group (IESG) – Divided into N areas (N is 10 plus or minus a few) – Each area has a manager – Composed of working groups (volunteers) – URL is http://www.ietf.org Internetworking With TCP/IP vol 1 Part . means without written consent of the author. PART I COURSE OVERVIEW AND INTRODUCTION Internetworking With TCP/IP vol 1 -- Part 1 1 2005 Topic And Scope Internetworking: . Internetworking With TCP/IP vol 1 -- Part 1 7 2005 Why Study TCP/IP? d The Internet is everywhere d Most applications are distributed Internetworking With TCP/IP vol