Search results
Results from the WOW.Com Content Network
By far the most popular FCS algorithm is a cyclic redundancy check (CRC), used in Ethernet and other IEEE 802 protocols with 32 bits, in X.25 with 16 or 32 bits, in HDLC with 16 or 32 bits, in Frame Relay with 16 bits, [3] in Point-to-Point Protocol (PPP) with 16 or 32 bits, and in other data link layer protocols.
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]
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.
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 ...
Diagram of an ethernet frame. File usage. The following 4 pages use this file: Ethernet frame; Frame check sequence; Jumbo frame; User:Mikm/Gallery; Global file usage.
The most widespread multiple access method is the contention-based CSMA/CD used in Ethernet networks. This mechanism is only utilized within a network collision domain, for example, an Ethernet bus network or a hub-based star topology network. An Ethernet network may be divided into several collision domains, interconnected by bridges and switches.
EtherType is a two-octet field in an Ethernet frame. It is used to indicate which protocol is encapsulated in the payload of the frame and is used at the receiving end by the data link layer to determine how the payload is processed. The same field is also used to indicate the size of some Ethernet frames.