Lecture 1Lecture 1

IntroductionIntroduction

InstructorInstructor

Name: Seokwoo SongName: Seokwoo Song Office: COBA 524Office: COBA 524 Phone: 817-272-7398Phone: 817-272-7398 Office Hours: Office Hours:

M W 4:30 – 5:30 PMM W 4:30 – 5:30 PMor by appointmentor by appointment

Email: Email: ssong@uta.edussong@uta.edu Website: Website: http://http://www.uta.edu/faculty/ssongwww.uta.edu/faculty/ssong//

Required TextbookRequired TextbookMichael Palmer, Hands-On Networking Michael Palmer, Hands-On Networking

Fundamentals, Thomson Course Technology, Fundamentals, Thomson Course Technology, 2006.2006.

EvaluationEvaluation

Exam 1Exam 1 70 70 Exam 2Exam 2 70 70 Exam 3Exam 3 70 70 Hands-on ProjectHands-on Project 60 60 AssignmentsAssignments 30 30

TotalTotal 300 pts300 pts

A Brief History of A Brief History of Communications in the U.S.Communications in the U.S.

1876 - Alexander Graham Bell, invented the first 1876 - Alexander Graham Bell, invented the first telephone capable of practical use.telephone capable of practical use.

1885 - AT&T was officially registered1885 - AT&T was officially registered

1970 - permitted MCI to provide limited long 1970 - permitted MCI to provide limited long distance service in competition to AT&T.distance service in competition to AT&T.

1984 - divestiture of AT&T1984 - divestiture of AT&T AT&T ( IXC = Interexchange Carrier)AT&T ( IXC = Interexchange Carrier) RBOCs = Regional Bell Operating CompaniesRBOCs = Regional Bell Operating Companies

A Brief History of A Brief History of Communications in the U.S.Communications in the U.S.

1996 - Deregulation Act: 1996 - Deregulation Act: U.S. Congress enacted the Telecommunications Act.U.S. Congress enacted the Telecommunications Act. Replaced all the current laws and FCC regulations Replaced all the current laws and FCC regulations

Telecommunications Act of 1996Telecommunications Act of 1996 Local telephone industry in the U.S. went from a highly Local telephone industry in the U.S. went from a highly

regulated and legally restricted monopoly to open regulated and legally restricted monopoly to open competition.competition.

Local service in the U.S. is now open for competition.Local service in the U.S. is now open for competition. RBOCs are now permitted to provide long distance RBOCs are now permitted to provide long distance

services.services.

Communications in the U.S.Communications in the U.S. RBOC = RBOC = Regional Bell Operating CompaniesRegional Bell Operating Companies

Pac-Bell, Bell South, Bell Atlantic, NYNEXPac-Bell, Bell South, Bell Atlantic, NYNEX US-West, Ameritech, Southwestern BellUS-West, Ameritech, Southwestern Bell

LEC = Local Exchange CarriersLEC = Local Exchange Carriers

IXC = Inter-exchange carriersIXC = Inter-exchange carriers AT&T, MCI-WorldCom, SprintAT&T, MCI-WorldCom, Sprint GTE - currently known as VerizonGTE - currently known as Verizon

A Brief History of InternetA Brief History of Internet

1969 - Internet started by the US-DoD and was 1969 - Internet started by the US-DoD and was known as ARPANETknown as ARPANET

1983 - Internet split into 2-parts:1983 - Internet split into 2-parts: Milnet - devoted to military networkMilnet - devoted to military network Internet - devoted to the university researchInternet - devoted to the university research

1985 - BITNET1985 - BITNET Completed by the Canadian governmentCompleted by the Canadian government Links the Canadian universities coast to coastLinks the Canadian universities coast to coast

A Brief History of InternetA Brief History of Internet

1990 - All networks around the world joined 1990 - All networks around the world joined together and formed---the together and formed---the InternetInternet..

1994 - Status of the Internet:1994 - Status of the Internet: Almost 4-million servers on the InternetAlmost 4-million servers on the Internet

20012001 40 million servers 40 million servers 400 million people400 million people Most Internet-users are youngMost Internet-users are young Most of these users are male/under 35Most of these users are male/under 35

What is the Internet?What is the Internet?

A “network of networks”A “network of networks” A set of connected devices that communicate A set of connected devices that communicate

using a given protocol suite called TCP/IPusing a given protocol suite called TCP/IP No central control No central control although there is central although there is central

discussion.discussion. Every computer has a unique addressEvery computer has a unique address

IPv4 IP address: 32 bit number presented in four IPv4 IP address: 32 bit number presented in four octetsoctets called a dotted quad. Ex: 192.30.250.00 called a dotted quad. Ex: 192.30.250.00

IPv6 or IPng (IP next generation) IP address: 128 bit IPv6 or IPng (IP next generation) IP address: 128 bit number, downward/upward compatible with IPv4number, downward/upward compatible with IPv4

The Old NSF BackboneThe Old NSF Backbone

A Modern ISP: UUNetA Modern ISP: UUNet

Internet GovernanceInternet Governance

There is There is no central controlno central control but: but: Domain name registration (.com, .net, Domain name registration (.com, .net,

or .org) is handled by a partnership of the or .org) is handled by a partnership of the government and several private firms, ex. government and several private firms, ex. Network SolutionsNetwork Solutions..

Standards and protocols are hashed outStandards and protocols are hashed out• Internet SocietyInternet Society

• Internet Architecture BoardInternet Architecture Board

• Internet Engineering Task Force (IETF)Internet Engineering Task Force (IETF)