1. Internet Technology Networking With TCP/IP

2. Modern Networking Packet switched Open standards

4. ARPANET 1969

9. ISP Relationships Peering – ISPs agree to exchange packets with each other for free Transit – One ISP accepts packets from another for a fee

11. 27.9% - UUNET/WorldCom 10.0% - AT&T 6.5% - Sprint 6.3% - Genuity 4.1% - PSINet 3.5% - Cable & Wireless 2.8% - XO Communications 2.6% - Verio 1.5% - Qwest 1.3% - Global CrossingUUNET/WorldComAT&TSprintGenuityPSINetCable & WirelessXO CommunicationsVerioQwestGlobal Crossing Major Internet Backbone MAPs Sorted by Market Share From Russ Haynal's ISP PageRuss Haynal's ISP Page

15. IP header contains information to route packet through the Internet Source ip address Destination ip address Time to live other

17. IP Addressing –An IP address is 32 bits in size –Every IP address is grouped into four 8-bit octets –Octets are separated by decimal points –Valid octet numbers range from 0 to 254 and represent a binary address

18. IP Addressing (cont.) –Each address consists of two parts: network id and host id –The network portion of an address indicates whether the device belongs to a Class A, B, C, D, or E network –Some octet number are reserved for special functions Dotted decimal notation –“Shorthand” convention used to represent IP addresses and make them more easily readable by people