EECS 122, Lecture 18
Where We Are So Far…
What We Are Missing…
Problem Set #3
The Transport Layer
Internet Transport Layers
Identifying Processes/Services
Port Numbers
Picking Port Numbers
Why Does This Matter?
Ephemeral Ports
UDP: User Datagram Protocol
UDP Header Structure
The UDP Checksum
Pseudoheader
Implications
Sending a UDP Datagram
Receiving a UDP Datagram
What a UDP/IP Packet Looks Like
Why Use UDP?
Intro to Reliability
Repairing Errors
Simple ARQ: Stop & Wait
Stop and Wait Event Plot
Stop and Wait Performance
Email: kfall@cs.berkeley.edu
Home Page: http://www-inst.eecs.berkeley.edu/~ee122