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Structure of an Ethernet packet, including the FCS that terminates the Ethernet frame [1] A frame check sequence (FCS) is an error-detecting code added to a frame in a communication protocol. Frames are used to send payload data from a source to a destination.
A frame is a series of bits generally composed of frame synchronization bits, the packet payload, and a frame check sequence. Examples are Ethernet frames, Point-to-Point Protocol (PPP) frames, Fibre Channel frames, and V.42 modem frames. Often, frames of several different sizes are nested inside each other.
This frame may cause a collision at the remote end which cannot be detected by the transmitter, so the frame is not resent on the physical layer. Due to interference on the medium, its data is corrupted and frame check sequence fails, requiring recovery at a higher layer, if possible. [citation needed]
Trama Ethernet; Usage on cs.wikipedia.org Ethernetový rámec; Usage on de.wikipedia.org Blockprüfzeichenfolge; Usage on es.wikipedia.org Frame Check Sequence; Trama Ethernet; Tramas jumbo; Usage on fr.wikibooks.org Les réseaux informatiques/Version imprimable; Les réseaux informatiques/Les protocoles de couche 1 et 2 (physique et liaison)
A frame check sequence (FCS) is appended to each fragment, which is then transmitted by the next available active PME in the aggregated group. The following diagram illustrates the PAF fragmentation: EFM PAF diagram. PAF Receive function reassembles the original frames from the received fragments, which are buffered in a per-MAC fragment buffer ...
IEEE 802.1Q, often referred to as Dot1q, is the networking standard that supports virtual local area networking (VLANs) on an IEEE 802.3 Ethernet network. The standard defines a system of VLAN tagging for Ethernet frames and the accompanying procedures to be used by bridges and switches in handling such frames.
Ethernet packet. The SFD (start frame delimiter) marks the end of the packet preamble. It is immediately followed by the Ethernet frame, which starts with the destination MAC address. [1] In computer networking, an Ethernet frame is a data link layer protocol data unit and uses the underlying Ethernet physical layer transport
Protection against errors, generally by means of generating and checking frame check sequences; Control of access to the physical transmission medium; In the case of Ethernet, the functions required of a MAC are: [3] receive/transmit normal frames; half-duplex retransmission and backoff functions; append/check FCS (frame check sequence)