66 results about "Ethernet frame" patented technology

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 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.

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 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.

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 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 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 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.

A communications network for a vehicle comprising: a central processing node; a zonal node; an Ethernet network coupling the central processing node to the zonal node; and an edge network coupled to the zonal node, the edge network comprising a time domain multiplexing (TDM) bus and a plurality of edge transducers coupled to the TDM bus, wherein the zonal node comprises a network bridge for bridging transducer data received from the TDM bus to the Ethernet backbone network, wherein the network bridge comprises: interface circuitry for interfacing the network bridge with the TDM bus; clock recovery circuitry for recovering a clock signal for use by the edge network from an Ethernet frame received from the Ethernet network, wherein a TDM cycle of the TDM bus is synchronised to the recovered clock signal; acoustic data receiver circuitry coupled to the interface circuitry by a first low-latency data path, wherein the acoustic data receiver circuitry is configured to transmit acoustic data contained in Ethernet frames received at the network bridge from the Ethernet network to the interface circuitry; and acoustic data transmitter circuitry coupled to the interface circuitry by a second low-latency data path, wherein the acoustic data transmitter circuitry is configured to transmit Ethernet frames containing acoustic data received at the interface circuitry from the edge network to the Ethernet network.

This invention discloses an image compression method, system, and apparatus for LED display control systems, belonging to the field of image compression. The method includes the following steps: hardware decoding of the HDMI or DVI video interface input signal to parse the original RGB image data stream; caching a complete image frame data in DRAM memory; performing overall compression encoding on the complete image frame data; packaging the image data after overall compression encoding into Ethernet frame data according to two-dimensional information; parsing the compressed image data from the Ethernet frame data; performing partitioned decompression decoding on the parsed image data; and caching the partitioned decompression decoding image frame data in DRAM memory. This invention employs an intra-frame compression transmission technology based on discrete wavelet transform, using overall compression at the encoding end and partitioned decompression at the decoding end, enabling decompression of compressed images at a very low cost.

A device provides secure communication in an Ethernet-based half-duplex multidrop bus system. The device has a physical interface for receiving and transmitting Ethernet frames on the physical layer, and a process unit for processing the Ethernet frames on the data link layer. The device is configured to transmit an Ethernet frame via the physical interface only at a transmission time that has been exclusively reserved and specified by a bus master. The device has a monitoring unit that is configured to carry out an authenticity check on a received Ethernet frame coming from another network participant by matching the received Ethernet frame against its transmission time. The monitoring unit is configured, in the event of an identified lack of authenticity, to corrupt the received Ethernet frame on the physical bus so that none of the other network participants recognizes this Ethernet frame as valid on the physical layer.

The present application relates to the technical field of data transmission. Provided are a data transmission method and data transmission apparatuses for a server, and a readable storage medium and a server. The data transmission method comprises: a first computing chip generating an Ethernet frame on the basis of data to be transmitted, wherein the Ethernet frame comprises an Ethernet packet header, the Ethernet packet header comprises an address field, and the address field is used for indicating an identification number or physical memory address of the first computing chip and a physical memory address of a second computing chip, the second computing chip being a chip that receives the Ethernet frame; and on the basis of the Ethernet packet header, an Ethernet switching chip sending the Ethernet frame to the second computing chip. In the present application, an Ethernet frame header field that is originally invalid overhead is transformed into a valid field carrying payload-related information, thereby avoiding the space waste originally caused by an Ethernet packet header when small-scale AI servers implement inter-chip data transmission via the Ethernet, and improving the efficiency of inter-chip data interaction.

Some embodiments relate to a control unit (200) comprising: a CAN (Controller Area Network) interface (214) which includes a plurality of serial communication ports (303-1, 303-j) and an Ethernet interface (216). A first plurality of CAN-to-stream identifier or CAN-to-stream ID logic circuits (306-1, 306-j) is each coupled to the plurality of serial communication ports (303-1, 303-j). A routing table (310) is coupled to the first plurality of CAN-to-stream ID logic circuits (306-1, 306-j). The routing table (310) stores a first plurality of CAN IDs or a first plurality of stream IDs. A Stream ID frame-to-Ethernet frame generation logic (208) has multiple inputs, each coupled to respective outputs of the first multiple CAN-to-Stream ID logic circuits (306-1, 306-j), and has respective outputs coupled to the Ethernet interface (216).The first plurality of CAN-to-Stream ID logic circuits (306-1, 306-j) is instantiated in a first plurality of hardware circuits.

An operating method of a compute express link (CXL) device according to an embodiment includes receiving an Ethernet frame including data including information on a user command from a host device, based on a CXL protocol. The operating method includes running a container using at least one of a first runtime software module and a second runtime software module to perform an operation corresponding to the user command.

Systems, devices, products, and methods for precise timestamping of Ethernet frames are described. In some implementations, a device may include a network interface circuit element and a logic circuit element configured to execute an instruction (500) which causes the logic circuit element to determine a first delay introduced by a physical coding sublayer circuit element in a first time (502), adjust a first timestamp associated with and transmitted with a first transmission based on the first delay (504), determine a second delay introduced by a physical coding sublayer circuit element in a second time, which is different from the first delay (502), adjust a second timestamp associated with and transmitted with a second transmission based on the second delay (506) (504).

The invention relates to an AUTBUS message conversion method and device. The method comprises the following steps: acquiring a data frame in an AUTBUS format by an FPGA (Field Programmable Gate Array); the FPGA analyzes the data frame in the AUTBUS format to obtain an equipment identifier and a data load; the FPGA inquires a dynamic mapping table according to the equipment identifier to obtain corresponding UDP port information, IP address information and MAC address information, and the dynamic mapping table is a table item recording a mapping relation among the equipment identifier, the UDP port information, the IP address information and the MAC address information; and the FPGA takes the MAC address information, the IP address information and the UDP port information as header information of an Ethernet frame, takes the data load as data load information of the Ethernet frame, constructs the Ethernet frame and sends the Ethernet frame to the Ethernet. Therefore, the data frame in the AUTBUS format can be converted into the Ethernet frame, so that the Ethernet frame can be forwarded to the Ethernet through a three-layer switch or a router, and analysis and application of an upper-layer application to the Ethernet frame can be facilitated.

The invention discloses a backboard bus communication method based on an FPGA, and relates to the technical field of communication. The method comprises the following steps: each module realizes automatic identification of a master station and a sub-station by detecting addresses, and the master station sends a topology query message to the sub-station by adopting an inverted traversal mode so as to quickly establish a network topology table. And after topology establishment is completed, the master station generates and transmits a token, and each substation encapsulates an Ethernet frame into a BLVDS message for transmission when holding the token, so that high-speed data communication between modules is realized. The system dynamically adjusts the sending opportunity when the token is held according to the historical sending frequency and the cache state of the module, so that the situation that the low-frequency module cannot send the token for a long time is avoided, excessive occupation of the high-frequency module is limited, and the overall throughput is improved. And the master station continuously monitors the bus state, preferentially executes local area topology repair when detecting that the token is lost, and reconstructs the whole network after continuous failure so as to reduce the recovery overhead.