Lecture 5: TCP/IP(cont.) (Feb 3)

In today,s lecture Dr. Gunes firstly went over the previous lecture and reminded us CSMA, Ethernet and its architecture, IP addresses,IP formats, and the structure of IP Datagram. Then, he talked about TCP/IP model deeply. First, he explained IP flow control and error detection mechanisms. He talked about ICMP and showed the differences between different types of ICMP messages. Then, he explained UDP which is the other part of TCP/IP transport layer protocol. After the UDP, we begun discussing Transmission Control Protocol in depth. Dr. Gunes, explained the most important 4 features, which are connection-oriented, reliable, full-duplex and byte-stream, of TCP. Then, he talked about the TCP ports. One important thing regarding ports is that TCP and UDP ports have different namespaces, so we can use the same port number for both. Then, we talked about the TCP segment format and addressing issues in TCP/IP. Finally, we compared the TCP and UDP.