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Unit of data on an Ethernet network
data unit on an Ethernet link transports an Ethernet frame as its payload. An Ethernet frame is preceded by a preamble and start frame delimiter (SFD)
Ethernet_frame
Error-detecting code used in communications protocols
separate means. Ethernet, for example, specifies that a damaged frame should be discarded and does not specify any action to cause the frame to be retransmitted
Frame_check_sequence
Ethernet frame with more than 1500 bytes payload
jumbo frames. Each Ethernet frame must be processed as it passes through the network. Processing the contents of a single large frame is preferable to processing
Jumbo_frame
Size of largest allowed packet on a network segment
but is not identical to the maximum frame size that can be transported on the data link layer, e.g., Ethernet frame. Larger MTU is associated with reduced
Maximum_transmission_unit
Open standard family of wired computer networking protocols
Ethernet (/ˈiːθərnɛt/ EE-thər-net) is a family of wired computer networking standards designed for (but not limited to) local area networks (LAN), access
Ethernet
Field in Ethernet frames indicating which protocol is encapsulated in the payload
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
EtherType
Computer networking protocol
Point-to-Point Protocol over Ethernet (PPPoE) is a network protocol for encapsulating Point-to-Point Protocol (PPP) frames inside Ethernet frames. It appeared
Point-to-Point Protocol over Ethernet
Point-to-Point_Protocol_over_Ethernet
Ethernet networking standard
tags in an Ethernet frame; together, these tags constitute a tag stack. When used in the context of an Ethernet frame, a QinQ frame is a frame that has
IEEE_802.1ad
of each frame. This CRC is in addition to any frame checking that the Ethernet frame requires. The fields in an ISL header identify the frame as belonging
Cisco_Inter-Switch_Link
Network protocol
RDMA over Converged Ethernet (RoCE) is a network protocol which allows remote direct memory access (RDMA) over an Ethernet network. There are multiple
RDMA_over_Converged_Ethernet
IEEE networking standard supporting VLANs
VLAN tag changes the frame, 802.1Q encapsulation forces a recalculation of the original frame check sequence field in the Ethernet trailer. The IEEE 802
IEEE_802.1Q
Use of Ethernet in an industrial environment
Industrial Ethernet (IE) is the use of Ethernet in an industrial environment with protocols that provide determinism and real-time control. Protocols for
Industrial_Ethernet
Technology for carrying Ethernet traffic over wide area networks
certain scenarios. The encapsulated packet flow includes: Original Ethernet frame MPLS labels Outer IP header (in case of IP/MPLS networks) EVPNs are
Ethernet_VPN
Technique to suspend transmission to avoid congestion
catches up. Flow control on Ethernet can be implemented at the data link layer. The first flow control mechanism, the pause frame, was defined by the Institute
Ethernet_flow_control
Unique identifier assigned to network interfaces
This use is common in most IEEE 802 networking technologies, including Ethernet, Wi-Fi, and Bluetooth. Within the Open Systems Interconnection (OSI) network
MAC_address
Sending network frames in one transmission to reduce overhead
(MSDU, e.g. an Ethernet frame) aggregation and MAC protocol data unit (MPDU, e.g. IEEE 802.11n frame) naming is also used in MoCA. Every frame transmitted
Frame_aggregation
Protocol used by network devices for advertising their identity
Ethernet frame. Each frame contains one LLDP Data Unit (LLDPDU). Each LLDPDU is a sequence of type–length–value (TLV) structures. The Ethernet frame used
Link_Layer_Discovery_Protocol
Media access control method used most notably in early Ethernet
popularity of Ethernet switches in the 1990s, full duplex point-to-point operation became standard in FastEthernet and GigabitEthernet. Collisions don’t
Carrier-sense multiple access with collision detection
Carrier-sense_multiple_access_with_collision_detection
Set of standards under development by the IEEE for real-time networking
allow PTP to apply beyond wired Ethernet networks. To account for data path delays, the gPTP protocol measures the frame residence time within each bridge
Time-Sensitive_Networking
Ethernet-based fieldbus system
industrial environment include EtherNet/IP, Profinet and Profibus. With EtherCAT, the standard Ethernet packet or frame (according to IEEE 802.3) is no
EtherCAT
Ethernet standards that carry data at the nominal rate of 100 Mbit/s
networking, Fast Ethernet physical layers carry traffic at the nominal rate of 100 Mbit/s. The prior Ethernet speed was 10 Mbit/s. Of the Fast Ethernet physical
Fast_Ethernet
Ethernet with speeds above 100 Gbit/s
Terabit Ethernet (TbE) is Ethernet with speeds above 100 Gigabit Ethernet. The 400 Gigabit Ethernet (400G, 400GbE) and 200 Gigabit Ethernet (200G, 200GbE)
Terabit_Ethernet
using SONET. Ethernet frames which are to be sent on the SDH link are sent through an "encapsulation" block (typically Generic Framing Procedure or GFP)
Ethernet_over_SDH
Electrical or optical properties between network devices
The physical-layer specifications of the Ethernet family of computer network standards are published by the Institute of Electrical and Electronics Engineers
Ethernet_physical_layer
Principal protocol used to assign IPv4 addresses on an IPv4 network
using unicast (in most cases) to the newly reserved IP address, in an Ethernet frame directed to the client's MAC address. The client should accept the packet
Dynamic Host Configuration Protocol
Dynamic_Host_Configuration_Protocol
Network communications domain that is isolated at the data link layer
not modify the Ethernet frame, while 802.1Q uses a frame-internal field for tagging, and therefore does modify the basic Ethernet frame structure. This
VLAN
Special-purpose Ethernet physical layer for avionics, by Airbus
which is carried in the same position in an AFDX frame as the MAC destination address in an Ethernet frame. However, in the case of AFDX, this virtual link
Avionics Full-Duplex Switched Ethernet
Avionics_Full-Duplex_Switched_Ethernet
Means of sharing telecommunications resources
called Inter-Switch Link which encapsulates the Ethernet frame with its own container, which labels the frame as belonging to a specific VLAN. 3Com used proprietary
Trunking
Technology for computer networking
advantages over the CSMA/CD of early Ethernet. The data transmission process operates as follows: An empty "token frame" is continuously circulated on the
Token_Ring
Digital audio standard
data are embedded in the same Ethernet frame as the audio data. The HyperMAC protocol is based on the Gigabit Ethernet physical layer for Cat 5e cable
AES50
Device that creates a larger computer network from two smaller networks
memory (CAM) is initially empty. For each received Ethernet frame the switch learns from the frame's source MAC address and adds this together with an
Network_bridge
Technologies for computer networking
40 Gigabit Ethernet (40GbE) and 100 Gigabit Ethernet (100GbE) are groups of computer networking technologies for transmitting Ethernet frames at rates
100_Gigabit_Ethernet
Storage network protocol
through a router—they must physically plug into the local Ethernet switch where Ethernet frame tunneling over routed networks is not in use). However, there
ATA_over_Ethernet
Formatted unit of data carried by a packet-switched network
is a frame. In layer 4, the transport layer, the data units are segments and datagrams. Thus, in the example of TCP/IP communication over Ethernet, a TCP
Network_packet
Packet switching method
When cut-through switching is used in Ethernet the switch is not able to verify the integrity of an incoming frame before forwarding it. The technology
Cut-through_switching
Networking hardware that forwards packets based on hardware address
A network switch (also called switching hub, bridging hub, Ethernet switch, and—by the IEEE—MAC bridge) is networking hardware that connects devices on
Network_switch
Sublayer of the Open Systems Interconnection model
As the EtherType in an Ethernet frame using Ethernet II framing is used to multiplex different protocols on top of the Ethernet MAC header it can be seen
Logical_link_control
Network standards task group, 1995–1998
standard. The work also required a short amendment extending the frame size of the Ethernet standard by four bytes, which was published as IEEE 802.3ac in
IEEE_P802.1p
Open-source VPN client and server software
camouflage the connection. SoftEther VPN optimizes performance by using full Ethernet frame utilization, reducing memory copy operations, parallel transmission
SoftEther_VPN
Data link layer communication protocol
networking lines. Two derivatives of PPP, Point-to-Point Protocol over Ethernet (PPPoE) and Point-to-Point Protocol over ATM (PPPoA), are used most commonly
Point-to-Point_Protocol
Error-detecting code for detecting data changes
Profile Specification: EPSG Working Draft Proposal 304. 1.4.0. Berlin: Ethernet POWERLINK Standardisation Group. 13 March 2013. p. 42. Archived from the
Cyclic_redundancy_check
Associates addresses in the layers of a networked device implementation
Authority (IANA). The EtherType for ARP is 0x0806. This appears in the Ethernet frame header when the payload is an ARP packet and is not to be confused with
Address_Resolution_Protocol
Using USB to connect to Ethernet
Ethernet over USB is the use of a USB link as a part of an Ethernet network, resulting in an Ethernet connection over USB (instead of e.g. PCI or PCIe)
Ethernet_over_USB
Standards for Ethernet at ten times the speed of Gigabit Ethernet
10 Gigabit Ethernet (10GE, 10GbE, or 10 GigE) is a group of computer networking technologies for transmitting Ethernet frames at a rate of 10 gigabits
10_Gigabit_Ethernet
Ethernet protocol
Ethernet Powerlink is a real-time protocol for standard Ethernet. It is an open protocol managed by B&R, ever since the dissolution of the Ethernet POWERLINK
Ethernet_Powerlink
Computer network technology
Fibre Channel over Ethernet (FCoE) is a computer network technology that encapsulates Fibre Channel frames over Ethernet networks. This allows Fibre Channel
Fibre_Channel_over_Ethernet
Using multiple network connections in parallel to increase capacity and reliability
frequency bands. OSI layer 2 (data link layer, e.g. Ethernet frame in LANs or multi-link PPP in WANs, Ethernet MAC address) aggregation typically occurs across
Link_aggregation
Computer networking standard
frame. However, in Ethernet there is no equivalent of a fixed frame. The mechanisms needed to transport the SSM over Synchronous Ethernet are defined by the
Synchronous_Ethernet
Digital telecommunications protocol for voice, video, and data
34 Mbit/s in Europe. At 155 Mbit/s, a typical full-length 1,500 byte Ethernet frame would take 77.42 μs to transmit. On a lower-speed 1.544 Mbit/s T1 line
Asynchronous_Transfer_Mode
Methods of delivering voice communications and multimedia over IP networks
latency decreases with increasing link speed. A full-size (1500 byte) Ethernet frame takes 94 ms to transmit at 128 kbit/s but only 8 ms at 1.5 Mbit/s. If
Voice_over_IP
Transmitted packets failing to reach their destination
data. Packets may also be dropped if the IPv4 header checksum or the Ethernet frame check sequence indicates the packet has been corrupted. Packet loss
Packet_loss
Network tunneling protocol
officially documented by the IETF in RFC 7348. VXLAN encapsulates an Ethernet frame in a UDP datagram for transport across an IP network, creating an overlay
VXLAN
Topics referred to by the same term
science concept Priority Code Point, a three-bit priority field within an Ethernet frame header when using IEEE 802.1q tagged frames Palestine Communist Party
PCP
Device for interconnecting Ethernet devices
Ethernet hub, active hub, network hub, repeater hub, multiport repeater, or simply hub is a network hardware device for connecting multiple Ethernet devices
Ethernet_hub
Protocol in the Internet protocol suite used with IPv6
ff02::1:ff00:55 as the destination IP address, which is encapsulated in an Ethernet frame with destination MAC address 33:33:FF:00:00:55. This neighbor solicitation
Neighbor_Discovery_Protocol
Basic data transfer unit associated with a packet-switched network
IP that provides a reliable connection-oriented service. Datagram socket Frame (networking) Network packet Protocol Wars Bothner, H. (1975). "The CCITT
Datagram
IEEE network security standard
service to the client. The standard defines MACsec frame format, which is similar to the Ethernet frame, but includes additional fields: Security Tag, which
IEEE_802.1AE
Topics referred to by the same term
distro Runt domain, an evolutionary conserved protein domain Runt frame, an Ethernet frame shorter than the minimum of 64 bytes The "Runt" device, a prototype
Runt_(disambiguation)
Parameter used in data and voice protocols
related to network technology, COS is a 3-bit field that is present in an Ethernet frame header when 802.1Q VLAN tagging is present. The field specifies a priority
Class_of_service
Network protocol
ISBN 978-0-471-21013-9. RFC 1132 - A Standard for the Transmission of 802.2 Packets over IPX Networks Ethernet Frame Types: Don Provan's Definitive Answer
Internetwork_Packet_Exchange
Topics referred to by the same term
Department, Seattle, Washington Software Freedom Day Start frame delimiter of an Ethernet frame Schwarze Filmschaffende in Deutschland, a professional association
SFD
Organization that provides access to the Internet
single-pair high-speed digital subscriber line), Ethernet, metropolitan Ethernet, gigabit Ethernet, Frame Relay, ISDN Primary Rate Interface, Asynchronous
Internet_service_provider
Networking protocol sublayer
(PCS) is a networking protocol sublayer in the Fast Ethernet, Gigabit Ethernet, and 10 Gigabit Ethernet standards. It resides at the top of the physical
Physical_coding_sublayer
Application-level throughput of a network
over Ethernet, the minimum protocol overhead consists of Ethernet physical layer: 20 bytes preamble, start frame delimiter and interpacket gap Ethernet data
Goodput
Technology for Gigabit-capable Passive Optical Network
GEM decouples client service formats from the underlying GPON framing so that Ethernet frames, ATM cells, or generic payloads can be carried transparently
G-PON_encapsulation_method
Proprietary data link network protocol
that support Subnetwork Access Protocol (SNAP) headers, including Ethernet, Frame Relay and Asynchronous Transfer Mode (ATM). Each Cisco device that
Cisco_Discovery_Protocol
Industrial safety communications protocol
data within an Ethernet frame: two subframes, each being an identical duplicate of the other, are combined to form the full safety frame. Each of the subframes
OpenSafety
American computer engineer (born 1976)
Schneider Electric Telvent RTU Improper Ethernet Frame Padding Vulnerability Siemens RuggedCom Improper Ethernet Frame Padding Vulnerability Eaton’s Cooper
Raheem_Beyah
IEEE standard
services. Ethernet (IEEE 802.3) networks are an exception; the IEEE 802.3x-1997 standard explicitly allowed using of the Ethernet II framing, where the
IEEE_802.2
Metropolitan area network based on Ethernet standards
metropolitan-area Ethernet, Ethernet MAN, carrier Ethernet or metro Ethernet network is a metropolitan area network (MAN) that is based on Ethernet standards
Metro_Ethernet
Networking technologies
Carrier Ethernet is a marketing term for extensions to Ethernet for communications service providers that utilize Ethernet technology in their networks
Carrier_Ethernet
service providers to carry traditional communication services—such as Ethernet, Frame Relay, ATM, or TDM across modern packet-switched networks like Internet
PWE3
Serial bus connecting MAC devices with the Ethernet physical layer
two signal interfaces: A Data interface to the Ethernet MAC, for sending and receiving Ethernet frame data. A PHY management interface, MDIO, used to
Management_Data_Input/Output
Communications Commission (US) Organization US FCC FCS Frame check sequence (Ethernet) Link layer Ethernet Frame IEEE Std 802.3 FDDI Fiber Distributed Data Interface
List of information technology initialisms
List_of_information_technology_initialisms
Pause between sending network packets
specific case of a guard interval. Ethernet devices must allow a minimum idle period between transmission of Ethernet packets. A brief recovery time between
Interpacket_gap
Standard for bridging over a provider's network
Service Tag, a type of Virtual LAN tag, was added to the header of the Ethernet frame in IEEE 802.1ad standard. In the service provider domain, switching
IEEE_802.1ah
Mechanism to wake up computers via a network
circuitry”, by sending it a standard Ethernet frame, which “contains a specific data pattern detected by the Ethernet-controller on the receiving end”. AMD
Wake-on-LAN
Ethernet connection signaling mechanism
Autonegotiation is a signaling mechanism and procedure used by Ethernet over twisted pair by which two connected devices choose common transmission parameters
Autonegotiation
Topics referred to by the same term
mining and tunnelling Jumbo Water Tower, Colchester, England Jumbo frame, an Ethernet frame with more than 1500 bytes of payload Jumbo, a muscadine cultivar
Jumbo_(disambiguation)
Amateur radio data communications protocol
fiber (RFI (both ways)/EMP/lightning resistant) or copper Ethernet wiring. BPQ Ethernet framing allows connecting entire stacks of TNC+transceiver pairs
AX.25
Ethernet enhancement
sensitivity of Fibre Channel over Ethernet to frame loss. The higher level goal is to use a single set of Ethernet physical devices or adapters for computers
Data_center_bridging
Principal protocol used to stream data across an IP network
check at layer 2, below both TCP and IP, such as is used in PPP or the Ethernet frame. However, introduction of errors in packets between CRC-protected hops
Transmission_Control_Protocol
Network protocol that builds a loop-free logical topology for Ethernet networks
(STP) is a network protocol that builds a loop-free logical topology for Ethernet networks. The basic function of STP is to prevent bridge loops and the
Spanning_Tree_Protocol
Communications protocol
and Ethernet nodes, such as PCs. Sercos III applies the hard real-time features of the Sercos interface to Ethernet. It is based upon the Ethernet standard
SERCOS_III
40 Gbit/s FEC/OTN Framers; 100 Gbit/s FEC/OTN/Ethernet Framer; 2.5G and 10 Gbit/s VCAT framer Framer: SONET/SDH POS, ATM, and GFP framer for OC-3 to OC-192
Cortina_Systems
Reliable digital data delivery methods on unreliable channels
typical TCP/IP stack, error control is performed at multiple levels: Each Ethernet frame uses CRC-32 error detection. Frames with detected errors are discarded
Error detection and correction
Error_detection_and_correction
Live distribution of digital audio across an Ethernet network
protocol exists. Layer-1 protocols use Ethernet wiring and signaling components but do not use the Ethernet frame structure. Layer-1 protocols often use
Audio_networking
Network that allows computers to share resources and communicate with each other
storage devices. In 1979, Robert Metcalfe pursued making Ethernet an open standard. In 1980, Ethernet was upgraded from the original 2.94 Mbit/s protocol to
Computer_network
Layer 3 switching technology
will be performed on the line card itself. CEF currently supports Ethernet, Frame Relay, ATM, PPP, FDDI, tunnels, and Cisco HDLC. CEF (Cisco Express
Cisco_Express_Forwarding
Topics referred to by the same term
part of the 2D graphics device driver in the X.Org Server DIX Ethernet, an Ethernet frame type Adrian Dix (born 1964), Canadian politician Alan Dix, British
Dix
Network standard
their product lines. As a computer cluster interconnect, IB competes with Ethernet, Fibre Channel, and Intel Omni-Path. The technology is promoted by the
InfiniBand
Hardware description and hardware verification language
or off. The below code describes and procedurally tests an Ethernet frame: class eth_frame; rand bit [47:0] dest; rand bit [47:0] src; rand bit [15:0]
SystemVerilog
Fault recovery system for Ethernet
logical topology is a line. MRP information is sent in the form of an Ethernet frame, with the EtherType field set to 0x88E3. The frames are built by Type–length–value
Media_Redundancy_Protocol
Type of signaling standards
standards used in networks, namely Frame Relay and Carrier Ethernet. LMI is a set of signalling standards between routers and Frame Relay switches. Communication
Local_Management_Interface
Extension of a private network across a public one
(IPv4, IPv6, ATM, Frame Relay, etc.). Virtual Private LAN Service (VPLS) is a virtual private network technology that provides Ethernet-based multipoint-to-multipoint
Virtual_private_network
Processes for maintaining a system
particular, Ethernet operations, administration and maintenance (EOAM) is the protocol for installing, monitoring and troubleshooting Ethernet metropolitan
Operations, administration, and management
Operations,_administration,_and_management
Interface that specifies signaling and management functions between two networks
and subsequently sub-interfaces (VLAN headers and DLCI headers for Ethernet and Frame Relay network packets) on each interface used for the NNI circuit
Network-to-network_interface
Data transmission unit
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
Frame_(networking)
Network interface controller mode that eavesdrops on messages intended for others
networks such as Ethernet or IEEE 802.11, each frame includes a destination MAC address. In non-promiscuous mode, when a NIC receives a frame, it drops it
Promiscuous_mode
Digital audiovisual data interface
"Ultra High Speed", "Premium High Speed with Ethernet", or "High Speed with Ethernet" HDMI cable. HDMI Ethernet Channel technology consolidates video, audio
HDMI
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ETHERNET FRAME
ETHERNET FRAME
ETHERNET FRAME
ETHERNET FRAME
ETHERNET FRAME
ETHERNET FRAME
ETHERNET FRAME
ETHERNET FRAME
ETHERNET FRAME
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