BSIT220-T302 Network Mgmt & Intrastructure (2193-1)

Similar to the Ethernet cable, the Ethernet frame has evolved thanks to a focused effort to develop the IEEE 802.3 standard. There were four frame types created (five if you count Ethernet version 1). The standards included Ethernet II (also known as Ethernet 2 and Ethernet DIX), IEEE 802.3, EEE 802.3 + IEEE 802.2 LLC, and IEEE 802 SNAP. However, at the end of the day Ethernet II prevailed. Unfortunately, there are a few points of confusion still floating around the internet regarding the IEEE 802.3 standard because it is not Ethernet per say...it is the IEEE standard.  The first is the structure of the “preamble” and “start of frame”. Second, whether “type”, “length”, or both are used. The third is the use of the “Pad” field. Then again, the Ethernet frame and IEEE 802.3 frame are relatively interchangeable at this point (at the casual conversation level). The Frame  table below is the result of weeding through numerous resources. Frame   7      +     1

The Institute of Electrical and Electronics Engineers (IEEE) is an organization that creates standards that standardize protocols and practices. For networking, the standards are identified as 802 LAN/MAN Standards. The 802 LAN/MAN Standards Committee (Working Group) develops and maintains networking standards and recommends best practices for wired and wireless area networks. An example of future 802 LAN/MAN Standards development is the IEEE 802.11ba standard. In short, 802.11ba defines WLAN wake-up radio operation for low-power WLAN devices, which should significantly extend the battery life of devices. Below are four different charts for the 802 LAN/MAN Standards. The IEEE.org tables are more trustworthy than Wikipedia. Table 1 : IEEE.org Name Description 802.1 Higher Layer LAN Protocols Working Group 802.3 Ethernet Working Group 802.11 Wireless LAN Working Group 802.15 Wireless Personal Ar