108 results about "Ethernet frame" patented technology

The invention discloses an SCD (Substation Configuration Description) file consistency verification method based on SV (Sampled Value) and GOOSE (Generic Object Oriented Substation Event) messages, which comprises the following steps of: respectively acquiring actual process layer network parameters of the SV messages and various GOOSE messages in Ethernet frame data of an SCD model file and a process layer network, actual model information of corresponding control blocks and actual data set information associated with the corresponding control blocks; according to the method, the SCD file is directly compared with the in-station SV and GOOSE messages, the consistency with the in-station actual situation can be guaranteed, the method is compatible with various protection devices before and after nine-unification, the model consistency can be verified by analyzing the real-time communication messages of process layer equipment, and the method has the advantages that the method is simple and convenient to operate and high in practicability. And the accuracy and the reliability of a checking result are fundamentally ensured.

Techniques for tunneling Layer 2 ethernet frames over a connection tunnel using the MASQUE protocol are described herein. The MASQUE protocol may be extended to include a new entity, configured to proxy ethernet frames using a MASQUE proxy connection, and an associated CONNECT method, CONNECT-ETH. Using the extended MASQUE protocol, an Ethernet over MASQUE (EoMASQUE) tunnel may then be established between various networks that are remote from one another and connected to the internet. An EoMASQUE tunnel, established between separate remote client premises, and / or between a remote client premise and an enterprise premise, may tunnel ethernet packets between the endpoints. Additionally, a first EoMASQUE tunnel, established between a first client router provisioned in a first remote client premise and an EoMASQUE proxy node, and a second EoMASQUE tunnel, established between a second client premise and the EoMASQUE proxy node, may tunnel ethernet packets between the first and second client premise.

Some embodiments provide a method of forwarding data messages between EPUs that are connected through a network and that perform computations to collectively execute a distributed application. The method generates, for each computation of each source EPU, a data message flow having one or more data messages that store a result of the computation. The generating includes specifying, for each data message, an Ethernet header having a field that identifies the data message as an Ethernet frame and a MAC field that instead of a MAC address stores a tag for forwarding the data message to a destination in the network. The method uses, at each forwarding element that forwards each data message, the tag stored in the MAC field of the data message's header to identify an egress port of the forwarding element to forward the data message along a path through the network to the data message's destination.

The embodiment of the invention is suitable for the technical field of vehicles, and provides a vehicle-mounted Ethernet data transmission method and device, a vehicle and a storage medium, and the method comprises the steps that a receiver receives an Ethernet data packet; the Ethernet data packet comprises an Ethernet frame header, a data header and application layer data; the header of the Ethernet frame carries a target physical address of a target receiver; the receiver judges whether the Ethernet frame header is a target receiver or not according to the Ethernet frame header; and if the receiving party is the target receiving party, analyzing the application layer data from the Ethernet data packet. By adopting the method, the levels of packaging and processing the application layer data in the Ethernet transmission process can be reduced, and the efficient transmission of the application layer data is realized.

A vehicle-mounted relay device for relaying Ethernet frames includes a plurality of PHY units corresponding to a plurality of vehicle-mounted devices, a switch unit to which the plurality of PHY units are connected, and a control unit configured to monitor operating states of the plurality of PHY units. The plurality of PHY units include a predetermined PHY unit whose operating state switches between a sleep state and an active state in response to reception of a predetermined control signal that differs from the Ethernet frames. When an Ethernet frame to be transmitted from the predetermined PHY unit has been detected during a period where the predetermined PHY unit is in the sleep state, the control unit executes switching control to switch the predetermined PHY unit to the active state.

The invention relates to the technical field of network communication integrated circuits, and discloses a method for quickly exchanging Ethernet messages between a chip-level CPU (Central Processing Unit) and a SWITCH, which comprises the following steps of: constructing an Ethernet frame buffer pool in an on-chip memory, dividing the Ethernet frame buffer pool into storage blocks with fixed lengths, and distributing a unique frame index; when the sending process is executed, the central processing unit writes data and submits a frame index to the switch core, and the frame index is read and transmitted by the target port; when a receiving process is executed, a switch port prefetches a frame index and writes data, and the data are processed by a switch core and then notified to be read by a central processing unit; and the central processing unit, the switch core and the port transfer the control right of the storage block through the transfer frame index. Through the shared buffer pool and an index transmission mechanism, copying and carrying of message data between the central processing unit and the switch are avoided, bandwidth occupation and processing delay of a bus in a chip are reduced, and message interaction efficiency is improved.

A method for transmitting secured Ethernet frames on a communication line, the method including the following in a transmitter module: receiving an Ethernet frame comprising payload data from a network layer; retrieving a secure policy, defining the type of security to be applied to the Ethernet frame; producing an initialization vector based on an encryption counter and a physical address of the transmitter module; creating an authentication tag by applying an authentication algorithm on the secure policy, the initialization vector and the payload data using a shared key and the initialization vector; adding the secure policy, the initialization vector and the authentication tag to the payload data to create a secured Ethernet frame; and sending the secured Ethernet frame to a data link layer for transmission on the communication line.

Systems, apparatus, articles of manufacture, and methods for precisely timestamping Ethernet frames are described. In some embodiments, an apparatus may include network interface circuitry; logic circuitry configured to execute instructions (500) to cause the logic circuitry to: determine (502) a first delay introduced by the physical coding sublayer circuitry at a first time; adjusting (504) a first timestamp associated with a first transmission based on the first delay, the first timestamp being transmitted with the first transmission; determining (502) a second delay introduced by the physical coding sublayer circuitry at a second time, the second delay being different from the first delay; and adjusting (504) a second timestamp associated with a second transmission based on the second delay, the second timestamp being transmitted (506) with the second transmission.

This disclosure describes techniques for interoperability of a blade server in a server chassis, where IOMs of the server chassis do not provide dedicated pins for communicating a physical slot ID to the blade server. BMCs of the blade servers and CMCs of IOMs of the server chassis are mutually configured to broadcast Ethernet frames on layer 2 network segments over a broadcast domain configured by a switch module connected to the blade servers over layer 2 network segments; conduct a slot inference communication protocol using these Ethernet frame broadcasts to enable the CMC to determine a physical slot ID in response to a BMC request, and broadcast that physical slot ID back to the BMC; and use a public certificate-private certificate pair, based in a hardware root of trust, to enforce security of this communication protocol.

The invention relates to the technical field of avionics communication. The invention provides an airborne satellite communication processing terminal. The airborne satellite communication processing terminal comprises a data control unit, a satellite data processing unit and a network processing unit, the satellite data processing unit sends data sent by a satellite to the data control unit; the data control unit performs communication protocol analysis and data format conversion on the received data; the data control unit sends the data subjected to communication protocol analysis and data format conversion to the network processing unit; the network processing unit encapsulates the received data into an Ethernet frame and then sends the Ethernet frame to the built-in network; the built-in network sends the received data to the data control unit through the Ethernet communication interface; and the data control unit encrypts the received data, converts the encrypted data into satellite signals and sends the satellite signals to a satellite. Satellite communication is converted into a universal Ethernet communication interface, and the compatibility problem of multi-platform interfaces is solved.

To realize handover by using a ring network that transfers Ethernet frames.SOLUTION: A ring node device uses only a lower address memory that stores the lower address of the MAC address and specifies frame transmission outside a ring, and a duplicated use lower address memory, and attaches an unnecessary lower address deletion bit to a communication start frame or a frame immediately after changing the destination base station, and transfers it on the counterclockwise ring, and when the lower address of the source MAC address of the frame arrives at a ring node device stored in the lower address memory that specifies frame transmission outside the ring of the ring node device or the duplicated use lower address memory, the lower address is deleted, the frame is copied, and the copy frame is sent outside the ring. The base station stores the lower address of the MAC address in the duplicated use lower address memory of the ring node device.SELECTED DRAWING: Figure 1

The application provides a deployment method of a honeypot, comprising the following steps: receiving tunnel data sent by a tunnel server and analyzing the tunnel data to output a target port number, wherein the tunnel data is derived from IP data packets of a public network attack end; querying a MAC mapping table based on the target port number, matching a virtual MAC address, obtaining a first Ethernet frame carrying the virtual MAC address, and forwarding the first Ethernet frame to a honeypot container so that the honeypot container generates a response packet; and returning the response packet to the public network attack end through the tunnel server. The method sets a MAC mapping table and a frame reconstruction operation at the honeypot host layer, ensures that the virtual MAC address is reserved in the Ethernet frame, makes the attack traffic always carry a virtual identity, avoids protocol layer stripping, maintains the original MAC layer context of the response packet generated by the honeypot container when the response packet is returned to the public network, and enhances the geographical camouflage effect.

The present application relates to a data transmission method, apparatus and system, an industrial device, a controller, and a storage medium. The method comprises: a target industrial device receiving a first Ethernet frame sent by a first industrial device in an industrial network, the first Ethernet frame carrying a first check value; generating a second check value on the basis of the first Ethernet frame; and when a check error occurs in the first Ethernet frame, determining an error type of the first Ethernet frame on the basis of the first check value and the second check value, the error type comprising a forwarding error or a receiving error. By means of the method, error diagnosis requirements of the industrial network can be met, and flexibility of error diagnosis during data transmission is improved.

The invention provides a network switching device and a network conversion device, and is applied to the technical field of communication, the network switching device comprises a 4G module and an Ethernet conversion module, and the 4G module is used for sending first data to the Ethernet conversion module; the Ethernet conversion module is connected with the 4G module, and is used for receiving the first data, converting the first data into an Ethernet frame, and transmitting the Ethernet frame to a wired network. According to the embodiment of the invention, the 4G module can be a CAT1 module, so that the 4G signal of the base station is converted into a wired network through the CAT1 module and the Ethernet conversion module, and the CAT1 module has a huge advantage in cost compared with a CAT4 module, so that the production cost is reduced.

A method may include obtaining an Ethernet frame. The method may also include determining a first priority for the Ethernet frame based on a quality-of-service classification. The method may further include segmenting the Ethernet frame into two or more segments. The method may also include adding metadata to the Ethernet frame or the two or more segments. The method may further include determining multiple links for transmitting the Ethernet frame. The method may also include obtaining values for each link of the multiple links. The method may further include computing a maximum allowed latency for each link of the multiple links. The method may also include selecting a first link of the multiple links based on the values for each link and the maximum allowed latency for each link. The method may further include queueing the Ethernet frame or the two or more segments for transmission using the first link.

The invention discloses a multi-protocol fusion bus interaction system and method, and relates to the technical field of intelligence information processing, the system comprises a protocol node, a bus device agent, a protocol converter, a Wi-Fi fusion layer and a device discovery center; the protocol node operates a guard process to maintain an equipment state and mark a message source node ID; the bus equipment agent is responsible for message filtering and cross-bus forwarding; the protocol converter encapsulates the data into Ethernet frames and transmits the Ethernet frames through Wi-Fi; protocol conversion is realized by the Wi-Fi fusion layer; the equipment discovery center dynamically manages the equipment and the bus list through heartbeat detection; the method comprises a message sending and receiving process and an equipment dynamic access process. According to the invention, a wired mode is replaced by Wi-Fi wireless transmission, so that the wiring cost is reduced; compatibility and transmission efficiency are improved through a protocol converter and intelligent message filtering; the system supports discovery and expansion of dynamic equipment, is suitable for complex industrial sites such as a data center, and has the advantages of high efficiency, expandability and easy maintenance.

The invention relates to a data transmission path determination method and device, computer equipment, a storage medium and a computer program product. Relates to the technical field of computer networks. The method comprises the following steps: receiving an IPv6 data packet sent by a first terminal; ethernet frames sent to the second terminal by the first terminal are packaged in the IPv6 data packet; extracting an identification tuple of the IPv6 data packet from the IPv6 data packet; the identification tuple is a parameter set used for identifying the IPv6 data packet; generating a hash value according to the identification tuple, and determining a corresponding routing table according to the prefix of the network address of the second terminal; selecting a target path from a plurality of equal-cost paths contained in a routing table according to the hash value; and forwarding the IPv6 data packet to the second terminal through the target path. By adopting the method, the efficiency of data transmission in an Ethernet virtual private network environment by an equal-cost multi-path routing technology can be improved.

The present application provides a communication method, a communication system, an electronic device, and a computer-readable medium, the communication method including: receiving an Ethernet frame sent by a first terminal; encapsulating a first port identification of the first slave gateway and the Ethernet frame into a first GEM frame, and sending the first GEM frame to a master gateway; the first port identification is a port identification for communication between optical network units.

The present application relates to the field of industrial communication technology, and relates to a batch information collection method, an information reporting method and an industrial control system, the method comprising: filling a business type identification value determined according to the business type of the business to be executed into a business type field in a business message to be generated; determining, according to the number of categories of business data collected from the slave station, to set N information units equal to the number of categories in the data area in the load area; filling each group of business parameters determined according to each category of business data into the corresponding information unit; encapsulating the filled information units and business type fields according to a preset Ethernet frame protocol to obtain a business message and sending it to all slave stations; receiving and parsing the response messages returned by each slave station; the response message is generated by the slave station based on the business data collected by the business type identification value and each group of business parameters; thereby solving the problems of heavy burden on the master station and low information collection efficiency in the prior art.

The application discloses a time synchronization device and communication equipment, a PTP sending module receives an Ethernet frame to output a first sending data packet start identification signal and a first sending signal; a time stamp processing module assigns a first current time stamp to a first sending time latch signal, and assigns the first sending time latch signal to a time stamp t1 register; a processor acquires the time stamp t1 to stamp a synchronization message / follow-up message, a PCS receiving module receives to output a first receiving data packet start identification signal; a PTP receiving module analyzes a delay request message to output the first receiving data packet start identification signal; the time stamp processing module assigns a second current time stamp to a first receiving time latch signal, and assigns the first receiving time latch signal to a time stamp t4 register; the processor acquires the time stamp t4 to stamp a delay response message. The application can realize high-precision time synchronization.

The present disclosure relates to an Ethernet Phy comprising an analog interface for connection to a communication medium, a digital interface, and a wake-up interface, the Ethernet Phy being configured to change from a sleep mode to an active mode or from an active mode to a sleep mode, the Ethernet Phy being configured to receive a first analog signal via the analog interface, the first analog signal representing an Ethernet frame, and the digital interface being configured to receive a second analog signal via the analog interface, the Ethernet Phy is configured to transmit an Ethernet frame via a digital interface only in an active mode and to receive a first wake-up signal representing a first wake-up identifier or a second wake-up identifier via a wake-up interface in a sleep mode, and a controller coupled to the first wake-up signal and configured to change from a sleep mode to an active mode in response to a case where the first wake-up signal represents one of the first wake-up identifier or the second wake-up identifier, and configured to remain in the sleep mode in response to a case where the first wake-up signal represents the other of the first wake-up identifier or the second wake-up identifier. The invention also relates to a method for Ethernet Phy.

The invention relates to an ad hoc network MAC layer scheduling method, belongs to the technical field of ad hoc networks, and solves the problem of low transmission efficiency of routing information exchange when the node scale is relatively large in the prior art. S1, a data packet sent by a user generates an original Ethernet frame, and the original Ethernet frame enters a data link layer; s2, packaging the original Ethernet frame into a data frame including a destination node address at a time; s3, searching an optimal next-hop wireless node from the current node to the destination node, and judging whether link switching is needed or not according to the routing information of the current wireless node to obtain an actual next-hop wireless node address; s4, performing secondary packaging on the actual next-hop wireless node address and the primary packaging data frame, and sending to the actual next-hop wireless node; and S5, analyzing the destination node address and the original Ethernet frame by the actual next-hop wireless node, taking the destination node address and the original Ethernet frame as the current node, and repeating the steps S2 to S5 until the data frame is sent to the destination node. The efficient ad hoc network MAC layer scheduling method is realized.

The invention is suitable for the technical field of high-speed Ethernet communication, and provides a data unloading and frame reconstruction optimization method and system for a high-speed Ethernet, and the method comprises the steps: packaging to-be-transmitted data into a UDP frame in an FPGA, calculating a checksum, and forming a complete UDP frame; packaging the UDP frame into an IP data packet, then packaging the IP data packet into an Ethernet frame, and controlling splicing of the frames; the packaged Ethernet frame is cached in a Frame FIFO (First In First Out); the format is further converted through a data format conversion module; scrambling the data, and carrying out serial transmission; at a receiving end, descrambling the received data and converting the format; analyzing the Ethernet frame layer by layer through a receiving state machine, and separating IP data or ARP data; the IP data are further analyzed, and UDP data are extracted and transmitted to the data processing module; according to the invention, the Ethernet transmission rate can be greatly improved, and the dependence on hardware is reduced.

To realize high-speed transmission of microwave radio.SOLUTION: When transmitting the microwave bit 1, the base station transmits an analog signal in which a carrier wave non-section corresponding to (m-k) (m: natural number power of 2) wavelengths continues after transmitting two to four wavelengths (k wavelengths) of the carrier wave. When a microwave bit 0 is transmitted, an analog signal of an m wavelength section carrier non-section is transmitted, and in a mobile terminal, from a signal when an output of a reception microwave reception method exceeds a selected threshold, an AND signal of a case where a counter value of a synchronization clock generation counter (85) of a counter value J * m that self-runs when there is no clear signal input and counts up by J times a clock of a carrier frequency is 0, 1, or (J * m-1) and a differential signal of rising of an input signal to an own digital PLL is generated, By clearing all the constituent flip-flops of the counter (85), clock synchronization with input data is performed, reproduced data is obtained, and fixed-length Ethernet frame synchronization is obtained from the reproduced data.SELECTED DRAWING: Figure 6

The disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The disclosure can be applied to smart services, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services, based on 5G communication technology and IoT-related technology. The disclosure discloses a method and apparatus for reducing overhead of an Ethernet frame, a method and apparatus for efficiently performing a connection resume procedure of a terminal, and a method and apparatus for preventing data loss when performing an uplink user data compression procedure.

A method to establish an optimized frame format used by a first compute node (21) acting as ingress PE and a second compute node (22) acting as egress PE in the transport of overlay ethernet traffic containing an IP payload from the source overlay endpoint attached to or hosted in the first compute node (21) to the destination overlay endpoint attached to or hosted in the second compute node (22) through a Multi Protocol Label Switching, MPLS, underlay network (2), where the frame format is a conventional MPLS tagged ethernet frame format, wherein an MPLS label stack is inserted between the ethernet header and the IP header of the overlay ethernet frame, where the single ethernet header carries the destination and source overlay Media Access Control, MAC, addresses when the frame was originated from the source overlay endpoint, where the MPLS header of the frame comprises a top label with the Label Switch Path, LSP, label towards the destination Provider Edge, PE, router, ie. egress PE, and a bottom label, e.g. an optimization MPLS label, holding information enabling the forwarding mechanism in the egress PE router to restore the original destination and source overlay MAC addresses.

An optical network unit for a passive optical network includes a fiber interface, a packet grabber module, and a frame format conversion module. The fiber interface is configured to receive XGTC frames. The packet grabber module is configured to output downstream and upstream XGEM frames under test from the XGTC frames. The frame format conversion module is configured to convert the downstream and upstream XGEM frames under test into Ethernet frames, respectively.

The present application discloses a method for transmitting Common Public Radio Interface (CPRI) data, comprising: a first network device receiving a first CPRI frame; the first network device generating an Ethernet frame based on valid data in the first CPRI frame, the valid data including a control word and in-phase / quadrature (IQ) data in the first CPRI frame, the Ethernet frame including valid data; and the first network device sending the Ethernet frame to a second network device. In this solution, during the conversion of the CPRI frame into an Ethernet frame for transmission, only valid data in the CPRI frame is extracted to generate the Ethernet frame, while invalid data in the CPRI frame is discarded. The invalid data is then refilled when the Ethernet frame is converted into the CPRI frame, thereby reducing the Ethernet transmission bandwidth occupied by the CPRI data when transmitted over Ethernet.

The invention discloses an Ethernet data link layer unvarnished transmission method and device based on a secure digital input / output interface, and a medium. The method comprises the following steps: establishing communication connection between the master control micro-control unit and the Ethernet module through the secure digital input / output interface; the master control micro-control unit generates an Ethernet frame conforming to an Ethernet data link layer protocol specification, and sends the Ethernet frame to the Ethernet module through the secure digital input / output interface; the Ethernet module receives an external Ethernet frame through a physical layer chip, and transmits the Ethernet frame to the master control micro-control unit through the secure digital input / output interface; and interaction of the Ethernet data link layer frame is directly carried out between the master control micro-control unit and the Ethernet module. Through transparent transmission of the data link layer, the embedded device can be directly connected with other devices in the local area network, and the requirements of production testing and local area network debugging are met.

A control panel for a fire alarm system includes a microprocessor operable to send and receive data. The microprocessor has a serial peripheral interface with a master port and a slave port. A computing device has a Differential Manchester encoder configured to encode data received from the master port and a Differential Manchester decoder configured to decode frames and send the decoded data to the slave port. A method of sending and receiving data is also disclosed.