User Datagram Protocol (UDP)

• Connectionless end-to-end service

• No flow control. No error recovery (no acks)

• Provides port addressing

• Error detection (Checksum) optional. Applies to pseudo-header (same as TCP) and UDP segment. If not used, it is set to zero.

• Used by SNMP, DNS, TFTP etc

16

16

16

Size in bits

16

Previous slide

Next slide

Back to first slide

View graphic version