EECS 122, Lecture 2

Table of Contents

EECS 122, Lecture 2

Protocol Layering

The OSI Reference Model

The ARPANet Ref. Model

Internet Protocol Stack

Encapsulation

Encapsulation Example

Issues in Network Design

Placing Functionality

The End-to-End Argument

Consider a File Transfer...

Consider Encryption ...

Performance Impact

Performance Impact (contd)

Who Decides?

Application Layer Framing (ALF) [CT90]

Internet Design Philosophy

Using Varieties of Networks

Connection Robustness

Packet Switching

Internet Design Futures

Today’s Internet

Best Effort Delivery

Measuring Performance (Capacity and Utilization)

Measuring Performance (Throughput and Delay)

Measuring Performance (Derived Values)

A Note on Units

Email: kfall@cs.berkeley.edu

Home Page: http://www-inst.eecs.berkeley.edu/~ee122