1. CINAPTUS Technology Consulting Networking Concepts Simulating Network Communications

2. CINAPTUS Technology Consulting 3/5/20042 Lesson Objectives Introduce fundamental networking concepts Motivate the need for managed networks to achieve effective communication

3. CINAPTUS Technology Consulting 3/5/20043 Remote Communications Evolution Smoke Signals Telegraph Telephone Email Shared Devices Instant Messaging

4. CINAPTUS Technology Consulting 3/5/20044 Infrastructure Cables and Wireless Messaging Protocols Device Addressing

5. CINAPTUS Technology Consulting 3/5/20045 Exercise #1 In our first exercise, each person will play the role of a network node Our initial network only supports direct (node-to-node) physical connections Set up a connection to each node with which you would like to communicate Communicate by sending your message across the wire to the receiver

6. CINAPTUS Technology Consulting 3/5/20046 Point-to-Point

7. CINAPTUS Technology Consulting 3/5/20047 Objectives For #1 Sense the empowerment (and security) at being able to directly connect (no middle- man) Gain an appreciation for the lack of scalability of a point-to-point solution Understand the basic flow of communications in this most basic network configuration

8. CINAPTUS Technology Consulting 3/5/20048 Improvement Opportunities Q: How many wires would be needed to connect everyone to everyone? Telephone operators and switchboards The concept of a router creates new possibilities

9. CINAPTUS Technology Consulting 3/5/20049 Exercise #2 In our second exercise, we introduce the concept of a router To facilitate communication from anywhere – to anywhere, all communication goes from a node to the router then on to the destination node Communicate by sending your message to the router (the router will pass it on to the receiver

10. CINAPTUS Technology Consulting 3/5/200410 Router

11. CINAPTUS Technology Consulting 3/5/200411 Objectives For #2 An appreciation for the expanded number of communication opportunities An appreciation for the reduced complexity and reduction in connections Sympathy for the poor router

12. CINAPTUS Technology Consulting 3/5/200412 Improvement Opportunities Q: Now how many wires would be needed to connect everyone to everyone? Much more scalable, but how can we make life easier for the router? Unique addressing removes some of the router’s burden

13. CINAPTUS Technology Consulting 3/5/200413 Exercise #3 In our third exercise, we introduce the concept of addressing To improve the efficiency of our network, each node is given a unique address Communicate by addressing your message then sending it to the router

14. CINAPTUS Technology Consulting 3/5/200414 Multiple Routers with Addressing

15. CINAPTUS Technology Consulting 3/5/200415 Objectives For #3 An basic understanding of addressing An appreciation for the efficiency improvements it brings to the router A sense of the confusion it can bring to the users

16. CINAPTUS Technology Consulting 3/5/200416 Lesson Summary Communications networks quickly grow in complexity Routers provide a means for scaling efficiently The abstract concept of addressing makes the router’s job easier