Lec 1: Mac Protocals
Lec 2: Network routing (without failures)
Lec 3: Network routing (with failures)
Lec 4: Reliable transport
Lec 5: Sliding window analysis, Little's law
Lec 5: A brief history of the Internet
Lec 6: History of the Internet cont'd, course summary
The Medium Access Control (MAC) protocol is used to provide the data link layer of the Ethernet LAN system. The MAC protocol encapsulates a SDU (payload data) by adding a 14 byte header (Protocol Control Information (PCI)) before the data and appending an integrity checksum, The checksum is a 4-byte (32-bit) Cyclic Redundancy Check (CRC) after the data. The entire frame is preceded by a small idle period (the minimum inter-frame gap, 9.6 microsecond (µS)) and a 8 byte preamble (including the start of frame delimiter).