4.2.3 UDP - User Datagram Protocol

Format

                                    
 0      7 8     15 16    23 24    31  
+--------+--------+--------+--------+ 
|     Source      |   Destination   | 
|      Port       |      Port       | 
+--------+--------+--------+--------+ 
|                 |                 | 
|     Length      |    Checksum     | 
+--------+--------+--------+--------+ 
|                                     
|          data octets ...            
+---------------- ...

• Unreliable, unordered, process to process communication built on IP
• Checksum provides guarantees over integrity of packet