General Ethernet Packet.
(At the network level, packets are often called frames.)

Preamble - Basically tells ethernet wardware that a new frame is comming.
Destination/Source Addresses - Hardware addresses.
Type - The type specifies the upper-layer protocol to receive the data after an Ethernet jump is completed -- IP in our case.
Data - After physical-layer and link-layer processing is complete, the data contained in the frame is sent to the upper-layer protocol specified in the Type field.
Frame Check Sequence (FCS) - A 4-byte error check sequence which is created by the sending device and recalculated by the receiving device to check for damaged frames. Damaged frames may be re-broadcast.