Agenda

1
Agenda

• Networking Basics
• Project Teams
• Nestle Case

2
Networking Concepts

• Network Layers
• TCP/IP
• Addressing (IP/DNS)
• Routing/Switching

3
Network Layers
Client
Server
Presentation
Application
Session
Transport
Network
Data Link
Physical
ISO Standard Layers
4
TCP/IP Layers
Client
Server
Presentation
smtp, http
TCP
IP (packets)
IP (routing)
Ethernet
Fiber, etc
TCP/IP Layers and wrappers
5
TCP/IP
TCP
TCP
Manager
IP
Worker
6
TCP/IP Addressing

• Address format
• Server
• Port
• Class Licenses/subnets
• Network Address Translation (NAT)
• Allows extra local addresses
• Limits direct internet access

7
IP Address Format
012 . 123 . 234 . 001 2000
Class A
Port
Class B
Class C
8
Leasing IP Addresses
Campus Backbone
Request for IP Address
PC
BIND Server
Leased IP Address
9
Addressing/DNS
Higher DNS Server
DNS Server
Client
Client
Router
10
Routing
Internet
IP Directory rules
Router
Campus Backbone
Router
Router
LAN
LAN
11
Discussion Questions

• 1) What is the utility model for computing?
• Strengths
• Weaknesses
• Where appropriate or where not
• 2) Who should be responsible for information
  systems vision the CIO or the C?O? How do we
  decide?

12
Nestle Case

• Effect of Nestle being built by acquisition on
  the acceptance of SAP standard?
• All 5 modules across all divisions at once pros
  and cons?
• User buy-in encouraging it and measuring it?
• (Use the development principles we studied on
  Monday!!)