Development of the domain name system Baoning Wu 01/30/2003.

Slides:

Advertisements

Similar presentations

Sergei Komarov. DNS  Mechanism for IP hostname resolution  Globally distributed database  Hierarchical structure  Comprised of three components.

Advertisements

2.1 Installing the DNS Server Role Overview of the Domain Name System Role Overview of the DNS Namespace DNS Improvements for Windows Server 2008 Considerations.

Tanenbaum & Van Steen, Distributed Systems: Principles and Paradigms, 2e, (c) 2007 Prentice-Hall, Inc. All rights reserved DISTRIBUTED SYSTEMS.

Application Layer At long last we can ask the question - how does the user interface with the network?

Domain Name System: DNS

Internetworking II Organizational Communications and Technologies Prithvi Rao H. John Heinz III School of Public Policy and Management Carnegie Mellon.

DNS: Revising the Current Protocol Matt Gustafson Matt Weaver CS522 Computer Communications University of Colorado, Colorado Springs.

TCP/IP Protocol Suite 1 Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Chapter 19 Domain Name System (DNS)

Naming Names in computer systems are used to share resources, to uniquely identify entities, to refer to locations and so on. An important issue with naming.

25.1 Chapter 25 Domain Name System Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

Domain Name System ( DNS )  DNS is the system that provides name to address mapping for the internet.

TCP/IP Protocol Suite 1 Chapter 17 Upon completion you will be able to: Domain Name System: DNS Understand how the DNS is organized Know the domains in.

Development of Domain Name System By: Paul V. Mockapetris USC Information Sciences Institute, Marina del Rey, California Kevin J. Dunlap Digital Equipment.

Application Layer. Domain Name System Domain Name System (DNS) Problem – Want to go to but don’t know the IP addresswww.google.com Solution.

Development of the Domain Name System Kevin Dunlap, Paul Mockapetris Mehwish Ahtasham COEN 317 May 18, 2005.

Lecturer : Ms.Trần Thị Ngọc Hoa Chapter 2 Methods Configuring Name Resolution Methods.

11.1 © 2004 Pearson Education, Inc. Exam Managing and Maintaining a Microsoft® Windows® Server 2003 Environment Lesson 11: Introducing WINS, DNS,

Development of DNS (P.V.Mockapetris, K.J.Dunlap) Anirban Kundu.

Distributed Computing COEN 317 DC2: Naming, part 1.

1 Domain Name System (DNS). 2 DNS: Domain Name System Internet hosts: – IP address (32 bit) - used for addressing datagrams – “name”, e.g.,

Ch-9: NAME SERVICES By Srinivasa R. Gudipati. To be discussed.. Fundamentals of Naming Services Naming Resolution The Domain Name System (DNS) Directory.

Chapter 16 – DNS. DNS Domain Name Service This service allows client machines to resolve computer names (domain names) to IP addresses DNS works at the.

DNS Domain Name System. Domain names and IP addresses People prefer to use easy-to-remember names instead of IP addresses Domain names are alphanumeric.

Domain names and IP addresses Resolver and name server DNS Name hierarchy Domain name system Domain names Top-level domains Hierarchy of name servers.

DNS: Domain Name System

1 DNS: Domain Name System People: many identifiers: m SSN, name, Passport # Internet hosts, routers: m IP address (32 bit) - used for addressing datagrams.

COMP210 DNS Module Domain Name Service Dr Ahmad Al-Zubi.

25.1 Chapter 25 Domain Name System Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Network Protocols Chapter 25 (Data Communication & Networking Book): Domain Name System (DNS) 1.

Chapter 17 Domain Name System

1 Application Layer Lecture 6 Imran Ahmed University of Management & Technology.

BAI513 - PROTOCOLS DNS BAIST – Network Management.

25.1 Chapter 25 Domain Name System Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

1 Computer Communication & Networks Lecture 26 Application Layer: Domain Name System Waleed Ejaz.

TCP/IP Protocol Suite 1 Chapter 17 Upon completion you will be able to: Domain Name System: DNS Understand how the DNS is organized Know the domains in.

Domain Name System CH 25 Aseel Alturki

Distributed Computing COEN 317 DC2: Naming, part 1.

Domain Name System. CONTENTS Definitions. DNS Naming Structure. DNS Components. How DNS Servers work. DNS Organizations. Summary.

Internet and Intranet Protocols and Applications Lecture 5 Application Protocols: DNS February 20, 2002 Joseph Conron Computer Science Department New York.

Naming March 8, Networks What is naming?  Associations between some elements in a set of names and some elements in a set of values  Binding.

1 Kyung Hee University Chapter 18 Domain Name System.

Domain Name System Refs: Chapter 9 RFC 1034 RFC 1035.

CPSC 441: DNS 1. DNS: Domain Name System Internet hosts: m IP address (32 bit) - used for addressing datagrams m “name”, e.g., - used by.

Domain Name System (DNS). DNS Server Service Overview of Domain Name System What Is a Domain Namespace? Standards for DNS Naming.

Tanenbaum & Van Steen, Distributed Systems: Principles and Paradigms, 2e, (c) 2007 Prentice-Hall, Inc. All rights reserved DISTRIBUTED SYSTEMS.

24. DNS Domain Name System address 1. Name server domain name IP address ftp.cs.mit.eduxx.xx.xx.xx 24.2 Mapping Domain Names To.

EE 122: Lecture 20 (Domain Name Server - DNS) Ion Stoica Nov 15, 2001 (* based on the some on-line slides of J. Kurose & K. Rose and of Raj Jain)

TCP/IP Protocol Suite 1 Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Chapter 19 Domain Name System (DNS)

Linux Operations and Administration

McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 18 Domain Name System (DNS)

Domain Name System (DNS)

Tanenbaum & Van Steen, Distributed Systems: Principles and Paradigms, 2e, (c) 2007 Prentice-Hall, Inc. All rights reserved DISTRIBUTED SYSTEMS.

TCP/IP Protocol Suite 1 Chapter 17 Upon completion you will be able to: Domain Name System: DNS Understand how the DNS is organized Know the domains in.

Internet Naming Service: DNS* Chapter 5. The Name Space The name space is the structure of the DNS database –An inverted tree with the root node at the.

Domain Name System INTRODUCTION to Eng. Yasser Al-eimad

Basics of the Domain Name System (DNS) By : AMMY- DRISS Mohamed Amine KADDARI Zakaria MAHMOUDI Soufiane Oujda Med I University National College of Applied.

Tanenbaum & Van Steen, Distributed Systems: Principles and Paradigms, 2e, (c) 2007 Prentice-Hall, Inc. All rights reserved DISTRIBUTED SYSTEMS.

Development of the Domain Name System

Networking Applications

Chapter 25 Domain Name System.

Peer-to-Peer Networking

Lecture Computer Networks DNS (Domain Name System)

Net 323 D: Networks Protocols

Chapter 19 Domain Name System (DNS)

Chapter 25 Domain Name System

Chapter 25 Domain Name System.

Domain Name System Refs: Chapter 9 RFC 1034 RFC 1035.

Chapter 25 Domain Name System

Presentation transcript:

Development of the domain name system Baoning Wu 01/30/2003

What is DNS? DNS is the largest name services today. Domain name to IP address

The content of this paper Examine the ideas behind the initial design of the DNS in Discuss the evolution of the ideas into the current implementations and usages. Surprises, successes and shortcomings. To predict its future.

Genesis of DNS The HOSTS.TXT system was encountering problems, e.g, (1) the file and the costs of its distribution were too large (2) the centralized control of updating did not fit the trend toward more distributed management of the Internet.

DNS design assumptions Provide at least all of the same information as HOSTS.TXT Allow the database to be maintained in a distributed manner Have no obvious size limits for names, name components Interoperate across the DARPA Internet and in as many other environments as possible Provide tolerable performance

Architecture Name servers: repositories of information, and answer queries using whatever information they possess Resolvers: interface to client program, embody the algorithms necessary to find a name server

concepts Name space: is a variable-depth tree where each node in the tree has an associated label. RR (resource records) in DNS : each RR carries a well-known type and class field e.g , Class => "IN", Type => "A“>

Database distribution Zones: a complete description of a contiguous section of the total tree name space. EDU and ISI.EDU Caching: cache response for later queries

Current implementation Root servers Berkeley BIND

Surprises 1. Refinement of semantics: the info is not well-understood 2. Performance: much worse than the original design expected 3. Negative caching: high percentage of negative responses

Successes 1. Variable depth hierarchy 2. Organizational structuring of names 3. Datagram access 4. Additional section processing 5. Caching 6. Mail address cooperation

Shortcomings 1. Type and class growth 2. Easy upgrading of applications 3. Distribution of control vs. distribution of expertise or responsibility

Future 1. Support for X.500 style address 2. Ubiquitous name service and consistent name space 3. Solutions to the growing complexity of naming.

Questions?