The frame structures of 10BASE-T, 100BASE-T and Gigabit Ethernet are identical.
• All these three Ethernet technologies use the standard Ethernet frame structure.
• These three Ethernet technologies differ in their transmission speed.
Ethernet frame structure has following fields:
1. Data filed (46 to 1,500 bytes): This field carries the IP datagram.
2. Destination address (6 bytes): This field contains the MAC of the destination adapter.
3. Sources address (6 bytes): This field contains the MAC address of the adapter that transmits the frame onto the LAN.
4. Type field (2 bytes): This field permits Ethernet to multiplex network – layer protocols.
5. Cycle Redundancy Check (CRC) (4 bytes): Errors in the frame can be detected by receiving adapter using the CRC field.
6. Preamble (8 bytes): This is the first field in the Ethernet frame.
If you found this answer helpful, please upvote and share with other students in your network.