1. Cisco Networking Academy Introduction “Welcome to the Human Network”

2. Welcome to the Networking Academy Global educational initiative that helps students of all ages develop foundational and advanced skills in networking/IT Global educational initiative that helps students of all ages develop foundational and advanced skills in networking/IT 128,000 students in over 2200 academies in the United States each year 128,000 students in over 2200 academies in the United States each year The skills learned in Academies can lay a powerful foundation for almost any profession—even non-IT careers The skills learned in Academies can lay a powerful foundation for almost any profession—even non-IT careers The Cisco Networking Academy can lead to industry certifications: CCENT and CCNA The Cisco Networking Academy can lead to industry certifications: CCENT and CCNA You Tube You Tube –Mind Wide Open –http://www.youtube.com/watch?v=Z_cp_WNO_og http://www.youtube.com/watch?v=Z_cp_WNO_og

3. Background Information Cisco Systems, Inc. is a multinational corporation with more than 70,000 employees and annual revenue of $50 billion as of 2007. Cisco Systems, Inc. is a multinational corporation with more than 70,000 employees and annual revenue of $50 billion as of 2007. –Headquartered in San Jose, California –It designs and sells networking and communications technology and services under five brands (Cisco, Linksys, WebEx, IronPort, and Scientific Atlanta) Founded in 1984 Founded in 1984 John Chambers CEO John Chambers CEO The textbook and other resources are online at: The textbook and other resources are online at: –http://cisco.netacad.net http://cisco.netacad.net You can compete in Networking Challenges at: You can compete in Networking Challenges at: –www.academynetspace.com www.academynetspace.com

4. What is Networking? Consist of computers, wiring, and other devices, that are used to move data from one place to another. Consist of computers, wiring, and other devices, that are used to move data from one place to another. Linking two or more devices together for the purpose of sharing data. Linking two or more devices together for the purpose of sharing data. The way data is transmitted across the internet. The way data is transmitted across the internet.

5. Networking Layers The OSI Model The OSI Model –The OSI, or Open System Interconnection, model defines a networking framework for implementing protocols in seven layers. OSI –Control is passed from one layer to the next as data moves through the network.

6. DATADATA

7. Network Cabling Coaxial Coaxial Fiber Optics Fiber Optics Cat 5 (Ethernet) Cat 5 (Ethernet) –Straight Through –Crossover

8. Cat 5 Cable W/ RJ-45 connectors: Straight Through Straight Through –568B  568B Crossover Crossover –568B  568A

9. Networking Devices Used to connect hosts (personal computers) to a larger network: Used to connect hosts (personal computers) to a larger network: –HubsLayer 1 –SwitchesLayer 2MAC Addressing –RoutersLayer 3IP Addresssing Most home users have ISR’s (Integrated Services Router) Most home users have ISR’s (Integrated Services Router) –These are made up of:  Switch  Router  Wireless Access Point (if you have wireless internet)

10. How does information travel through a network? Source and Destination IP Addresses Source and Destination IP Addresses –It’s like sending a letter through the US Mail. If you don’t have the address of where you want to send it, it will never reach the destination. –An IP address is made up of 4 octets/32 bits –Written in a dotted decimal format –Example:  192.168.15.7  172.85.200.56 1 st Octet 2 nd Octet 3 rd Octet 4 th Octet 1728520056

11. Types of IP Addresses Every part of the IP Address has a significant purpose Every part of the IP Address has a significant purpose The class of IP Address is determined by the first Octet Range The class of IP Address is determined by the first Octet Range –Class A:0  127N.H.H.H –Class B:128  191N.N.H.H –Class C:192  223N.N.N.H  N = Network Portion  H = Host Portion The class determines which portion is network and host

12. What does the Class Mean? When data is traveling across the internet, it may pass through many different routers. When data is traveling across the internet, it may pass through many different routers. The IP Address tells the router which network the data is being sent to. The IP Address tells the router which network the data is being sent to. After it reaches the correct network, the final router will determine which host the data must go to. After it reaches the correct network, the final router will determine which host the data must go to. Each IP Address has a network and host portion Each IP Address has a network and host portion The Class (A, B, or C) determines what part of the address is network and what part is host. The Class (A, B, or C) determines what part of the address is network and what part is host. Look at the following diagram for a visual… Look at the following diagram for a visual…

13. Data Source: 192.168.18.22 Destination:192.168.5.33

14. Quiz: Which Class is each IP 198.72.55.0_________ 198.72.55.0_________ 112.85.2.220_________ 112.85.2.220_________ 192.168.15.2_________ 192.168.15.2_________ 178.200.13.10_________ 178.200.13.10_________ 85.112.224.20_________ 85.112.224.20_________ 190.22.52.18_________ 190.22.52.18_________ 200.86.21.8_________ 200.86.21.8_________ Class C Class A Class C Class B Class A Class B Class C

15. Which Portion is Network and Host? 198.72.55.0_________ 198.72.55.0_________ 112.85.2.220_________ 112.85.2.220_________ 192.168.15.2_________ 192.168.15.2_________ 178.200.13.10_________ 178.200.13.10_________ 85.112.224.20_________ 85.112.224.20_________ 190.22.52.18_________ 190.22.52.18_________ 200.86.21.8_________ 200.86.21.8_________ N.N.N.H N.H.H.H N.N.N.H N.N.H.H N.H.H.H N.N.H.H N.N.N.H

16. Summary Networking was first created only for Universities and the government. Networking was first created only for Universities and the government. The popularity of the home computer triggered companies to make networking devices available to the home user. The popularity of the home computer triggered companies to make networking devices available to the home user. Without a strict set of rules/guidelines, the internet would not exist. Without a strict set of rules/guidelines, the internet would not exist.