CN109391566A - ETBN backbone switches core board, control method and device - Google Patents
ETBN backbone switches core board, control method and device Download PDFInfo
- Publication number
- CN109391566A CN109391566A CN201910015447.9A CN201910015447A CN109391566A CN 109391566 A CN109391566 A CN 109391566A CN 201910015447 A CN201910015447 A CN 201910015447A CN 109391566 A CN109391566 A CN 109391566A
- Authority
- CN
- China
- Prior art keywords
- table item
- item
- data message
- information
- list item
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/25—Routing or path finding in a switch fabric
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/40—Constructional details, e.g. power supply, mechanical construction or backplane
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/25—Mapping addresses of the same type
- H04L61/2503—Translation of Internet protocol [IP] addresses
Abstract
This application involves a kind of ETBN backbone switches core board, control method and devices.Wherein, ETBN backbone switches core board includes three-tier switch chip, and the interface circuit in each compartment for connecting train；Three-tier switch chip connecting interface circuit.Three-tier switch chip obtains the status information and facility information in each compartment based on TTDP, by interface circuit, and generates system data list item based on status information and facility information；Three-tier switch chip is based on system data list item, generates NAT table item and hardware table item, and carry out Ethernet data transmission according to NAT table item and hardware table item.Based on this, the function of rail traffic ETBN backbone switches can be achieved, such as conversion of R-NAT railway private network address and TTDP train Topology Discovery Protocol, and then realize the Ethernet interaction of the mobile unit of train, improve the reliability and real-time of Ethernet transmission in rail traffic.
Description
Technical field
This application involves technical field of rail transit communication, more particularly to a kind of ETBN (Ethemet Train Bus
Nod, train bus-line node) backbone switches core board, control method and device.
Background technique
With the rise of domestic railway construction, in recent years, application of the network communication technology in railway has faster
Development.The features such as Ethernet is because of data transmission bauds with higher, preferable equipment compatibility, has been used widely.
It is inevitable development trend that ethernet technology is applied in train network communication, therefore, for high speed, large capacity, is met firmly
The Train Communication Network systematic research of part real-time is of great significance.
During realization, inventor has found that at least there are the following problems in traditional technology: traditional rail traffic exchange
The real-time and poor reliability of machine.
Summary of the invention
Based on this, it is necessary to there are problems that real-time and poor reliability traditional rail traffic interchanger, provide
A kind of ETBN backbone switches core board, control method and device.
To achieve the goals above, on the one hand, the embodiment of the present application provides a kind of ETBN backbone switches core board,
Including three-tier switch chip, and the interface circuit in each compartment for connecting train；Three-tier switch chip connecting interface
Circuit.
Three-tier switch chip is based on TTDP (Train Topology Discovery Protocol, train Topology Discovery
Agreement), obtain by interface circuit the status information and facility information in each compartment, and generated based on status information and facility information
System data list item；Three-tier switch chip is based on system data list item, generates NAT (Network Address
Translation, network address translation) list item and hardware table item, and Ethernet data is carried out according to NAT table item and hardware table item
Transmission.
Three-tier switch chip records equipment in each compartment according to system data list item in one of the embodiments,
IP (Internet Protocol Address, internet protocol address) address information, and it is based on each IP address information, generate NAT
List item.Three-tier switch chip generates route table items also according to NAT table item, and route table items are added to hardware route list item
In, generate hardware table item.
Three-tier switch chip obtains status information by TTDP HELLO data frame in one of the embodiments, and
Update system data list item.
It in one of the embodiments, further include memory chip and switching power supply；Three-tier switch chip connects respectively
Connect memory chip and switching power supply；Switching power supply connects memory chip.
Switching power supply includes the first power supply conversion core for connecting three-tier switch chip in one of the embodiments,
Piece, second source conversion chip and third power conversion chip；Third power conversion chip connects memory chip.
On the other hand, the embodiment of the present application also provides a kind of controls based on above-mentioned ETBN backbone switches core board
Method processed, comprising:
Obtain the status information and facility information in each compartment based on TTDP, by interface circuit, and based on status information and
Facility information generates system data list item.
Based on system data list item, generate NAT table item and hardware table item, and according to NAT table item and hardware table item carry out with
Too network data transmits.
It is based on system data list item in one of the embodiments, generates NAT table item and the step of hardware table item includes:
According to system data list item, the IP address information of the equipment in each compartment is recorded, and is based on each IP address information, is generated
NAT table item.
Route table items are generated according to NAT table item, and route table items are added in hardware route list item, generate hardware list
?.
The status information and equipment letter in each compartment are obtained based on TTDP, by interface circuit in one of the embodiments,
Breath, and after the step of generating system data list item based on status information and facility information, further includes:
Status information is obtained by TTDP HELLO data frame, and updates system data list item.
Include: according to the step of NAT table item and hardware table item progress Ethernet data transmission
It extracts the header of the data message received and data message is pre-processed, obtain the address of data message
Information.
Based on address information, data message is matched using NAT table item and hardware table item, obtains corresponding port.
The queue scheduling of data message is carried out according to scheduling mechanism, and the result according to queue scheduling sends data message
The equipment connected to port.
The header of the data message received is extracted in one of the embodiments, and data message is pre-processed,
After the step of obtaining the address information of data message, further includes:
Safety detection is carried out to pretreated data message；Safety detection includes mirror image processing and/or base based on stream
It is detected in the rate of stream.
Based on address information, data message is matched using NAT table item and hardware table item, obtains corresponding port
After step, further includes:
It is added according to accesses control list and the preset field of data message, in the data message after matching corresponding
Label；Preset field includes any one or any combination in following information: source MAC (Media Access Control, matchmaker
Body intervenes control layer) address, target MAC (Media Access Control) address, source IP address, purpose IP address and TCP (Transmission
Control Protocol transmission control protocol)/UDP (UserDatagram Protocol, User Datagram Protocol) port
Number；Label includes at least one of forwarding label, discarding label, speed limit label and field modification label.
The queue scheduling of data message is carried out according to scheduling mechanism, and the result according to queue scheduling sends data message
To port connect equipment the step of include:
The equipment that data message with forwarding label is sent to corresponding port connection.
A kind of control device is provided in one of the embodiments, comprising:
System data list item generation module, for obtained based on TTDP, by interface circuit each compartment status information and
Facility information, and system data list item is generated based on status information and facility information.
Ethernet data transmission module is used for based on system data list item, generation NAT table item and hardware table item, and according to
NAT table item and hardware table item carry out Ethernet data transmission.
A technical solution in above-mentioned technical proposal is had the following advantages and beneficial effects:
ETBN backbone switches core board includes three-tier switch chip, and each compartment for connecting train connects
Mouth circuit；Three-tier switch chip connecting interface circuit.Three-tier switch chip is based on TTDP, obtains each vehicle by interface circuit
The status information and facility information in compartment, and system data list item is generated based on status information and facility information；L3 Switching machine core
Piece is based on system data list item, generates NAT table item and hardware table item, and carry out ether netting index according to NAT table item and hardware table item
According to transmission.Based on this, it can be achieved that the function of rail traffic ETBN backbone switches, such as R-NAT railway private network address
Conversion and TTDP train Topology Discovery Protocol, and then realize the Ethernet interaction of the mobile unit of train, it improves in rail traffic
The reliability and real-time of Ethernet transmission.
Detailed description of the invention
By being more particularly described for preferred embodiment of the present application shown in the drawings, the above and other mesh of the application
, feature and advantage will become more fully apparent.Identical appended drawing reference indicates identical part in all the attached drawings, and does not carve
Meaning draws attached drawing by actual size equal proportion scaling, it is preferred that emphasis is shows the purport of the application.
Fig. 1 is the first schematic diagram of ETBN backbone switches core board in one embodiment；
Fig. 2 is the train node schematic diagram of ETBN backbone switches core board in one embodiment；
Fig. 3 is the address conversion schematic diagram of ETBN backbone switches core board in one embodiment；
Fig. 4 is the second schematic diagram of ETBN backbone switches core board in one embodiment；
Fig. 5 is the third schematic diagram of ETBN backbone switches core board in one embodiment；
Fig. 6 is the 4th schematic diagram of ETBN backbone switches core board in one embodiment；
Fig. 7 is the circuit construction of electric power schematic diagram of ETBN backbone switches core board in one embodiment；
Fig. 8 is the first schematic flow chart of control method in one embodiment；
Fig. 9 is the second schematic flow chart of control method in one embodiment；
Figure 10 is the third schematic flow chart of control method in one embodiment；
Figure 11 is the 4th schematic flow chart of control method in one embodiment；
Figure 12 is the data packet processing flow schematic diagram of control method in one embodiment；
Figure 13 is the structural schematic diagram of control device in one embodiment.
Specific embodiment
The application in order to facilitate understanding is described more fully the application below with reference to relevant drawings.In attached drawing
Give the preferred embodiment of the application.But the application can realize in many different forms, however it is not limited to this paper institute
The embodiment of description.On the contrary, purpose of providing these embodiments is make it is more thorough and comprehensive to disclosure of this application.
It should be noted that it can be directly to separately when an element is considered as " connection " another element
One element and it is in combination be integrated, or may be simultaneously present centering elements.
Unless otherwise defined, all technical and scientific terms used herein and the technical field for belonging to the application
The normally understood meaning of technical staff is identical.The term used in the description of the present application is intended merely to description tool herein
The purpose of the embodiment of body, it is not intended that in limitation the application.Term as used herein "and/or" includes one or more phases
Any and all combinations of the listed item of pass.
International Electrotechnical Commission (IEC) is that following standard is formulated in application of the Ethernet on High Speed Train Communication Network network: (1)
IEC-61375-2-5 defines ETB (Ethemet Train Backbone, train ether backbone network), realizes different sub-network
Between data communication interconnection, different group networkings can be using different existing train bus-line technologies, such as MVB
(Multifunction Vehicle Bus, multifunctional vehicle bus) or CAN (Controller Area Network, control
Device local area network processed) bus.(2) IEC-61375-3-4, the standards define ECN (Ethemet Consist Network, column
Vehicle ether network consisting), it is kind of the vehicle grade communication network based on ethernet technology.Connect the network-bus node of ECN and ETB
For ETBN.
Based on the research to ETB the and ECN communication technology, the embodiment of the present application uses switching Ethernet technology, exploitation
Ethernet real-time exchange equipment out.Pass through opening up to Train Communication Network (Train Communication Network, TCN)
A kind of Train Communication Network system based on switching Ethernet is developed in the optimization for flutterring structure and communication protocol stack, can be simultaneously
Have higher certainty, real-time and reliability, makes it that can meet the transmission needs of mobile unit data.Wherein, the application
Embodiment provides a kind of exchanger core plate, completes main devices and chooses, meanwhile, to the working principle of main hardware comprising modules
It is illustrated.The embodiment of the present application can be in the data exchange flow process communicated with rail traffic Ethernet.It is logical based on TCN
Believe protocol stack, ETB the and ECN network architecture is proposed on software principle, designs the communication scheduling machine of backbone layer and vehicle control layer
System, and then design train real time data agreement (Train Real-time Data Protocol, TRDP) communication protocol stack.Most
Function is carried out to hardware ethernet switching device afterwards, performance and stability are tested.Exchanger core provided by the embodiments of the present application
The design of plate demonstrates the reliability, real-time, certainty of the Train Communication Network based on switching Ethernet.
In one embodiment, a kind of ETBN backbone switches core board is provided, as shown in FIG. 1, FIG. 1 is an implementations
First schematic diagram of ETBN backbone switches core board in example, including three-tier switch chip, and for connecting
The interface circuit in each compartment of train；Three-tier switch chip connecting interface circuit.
Three-tier switch chip obtains the status information and facility information in each compartment based on TTDP, by interface circuit, and
System data list item is generated based on status information and facility information；Three-tier switch chip is based on system data list item, generates NAT
List item and hardware table item, and Ethernet data transmission is carried out according to NAT table item and hardware table item.
Specifically, exchanger core plate may include three-tier switch chip and interface circuit；Three-tier switch chip is logical
Cross each compartment of interface circuit connection train.Based on above structure, three-tier switch chip can obtain train by interface circuit
The information in upper each compartment；Specifically, three-tier switch chip can be based on TTDP agreement, obtain the status information and equipment in each compartment
Information.According to the status information and facility information in compartment each on train, three-tier switch chip can establish system number for the train
According to list item.After establishing system data list item, three-tier switch chip can based on system data list item generate NAT table item and
Hardware table item, according to NAT table item and hardware table item, three-tier switch chip can realize the ether netting index of the equipment in each compartment of train
According to transmission.Wherein, status information is used to reflect the information in corresponding compartment；Facility information is the equipment that network is accessed on compartment
Information.
It should be noted that three-tier switch chip can be used for realizing the function of rail traffic ETBN backbone switches,
The conversion of R-NAT railway private network address and TTDP etc., carry out the mobile unit data ethernet network transmission of train.
Interface circuit is used to connect the equipment on each compartment of train, furthermore, it may also be used for connection Ethernet.Specifically, it connects
Mouth circuit can be ethernet interface circuit.Based on this, in data uplink direction, the data message of equipment passes through interface electricity on train
Road is sent to three-tier switch chip, is carried out according to NAT table item and/or hardware table item to data message by three-tier switch chip
After processing, Ethernet can be sent to by interface circuit.In data downstream direction, the data message of Ethernet passes through interface circuit
It is sent to three-tier switch chip, data message is carried out according to NAT table item and/or hardware table item by three-tier switch chip
After reason, the train apparatus of corresponding port connection can be sent to by interface circuit.Meanwhile the data between train apparatus mutually pass
When, the data message of the first train apparatus is sent to three-tier switch chip by interface circuit, by three-tier switch chip according to
After handling according to NAT table item and/or hardware table item data message, the second train apparatus can be sent to by interface circuit.
NAT table item is the list item of upper layer software (applications) agreement maintenance, including user checks list item, and configuration NAT, needs CPU
Processing, is eventually configured to hardware register.NAT table item is equal to address translation technique, and the data that Intranet is initiated are with being NAT
Location conversion, is converted into outer net address for IP address of internal network.When data send out data according to this list item converted from when distally passing back
It is sent on IP address of internal network.
Hardware table item can be hardware NAT table item, be configuration hardware register.It, can be direct when data packet reaches interchanger
It searches matching hardware table item to be forwarded, does not need to handle by CPU again.Hardware NAT table item and software NAT table item function one
Sample, difference are that software NAT is to be converted by software, and hardware NAT is converted by hardware.
It should be noted that as shown in Fig. 2, Fig. 2 is the train of ETBN backbone switches core board in one embodiment
Node schematic diagram, each compartment has compartment number and IP address, since track train node frequently changes, when network produces
When changing, if necessary to manual configuration equipment, then complexity is configured, and be easy error.Therefore TTDP is needed to realize automatic discovery
Marshalling improves transportation network allocative efficiency.Three-tier switch chip is based on during TTDP establishes system data list item, can be
On system data list item, independent project information is established for each compartment of train.The content of project information may include corresponding compartment
Compartment number, network identity and device identification etc..
Also, three-tier switch chip can also be inquired the state in compartment by predetermined period, obtain the equipment letter of each compartment
Breath and status information, safeguard and update system data list item.When the compartment of train changes, for example, compartment insertion or from
It opens, three-tier switch chip can obtain or confirm the status information in each compartment, and project information is carried out on system data list item
Dynamic adds or deletes.Information and each compartment of train based on this, on three-tier switch chip feasible system data table items
Equipment is consistent, guarantees the reliability that train and Ethernet data generate.
Further, the host assignment inside private network has arrived local ip address (what is only used in this private network is special
With address), but when wanting with main-machine communication on internet, it needs using NAT technology.Three-tier switch chip can be according to system number
NAT table item and hardware table item are generated according to list item, can track train groups at network in, realize the ground based on ETB and ECN
Location conversion.Wherein, when more new change occurs in the information of system data list item, NAT table item and hardware table item need to be synchronized
It updates, to keep the consistency of list item information, core board can be improved to the real-time of the Ethernet data of train transmission and reliable
Property.
Compared to traditional rail traffic interchanger product, the embodiment of the present application can be applied to the access net in rail traffic
Equipment, such as interchanger or the equipment etc. with exchange and routing function, can be realized rail traffic ETBN backbone switches
Function, such as R-NAT railway private network address conversion and TTDP train Topology Discovery Protocol, and then realize train it is vehicle-mounted
The Ethernet interaction of equipment, improves the reliability and real-time of Ethernet transmission in rail traffic.Also, it can also be by catenet
It is divided into hierarchical subnet, the automatic IP of ETB is supported to redistribute, and data and information inter-network is allowed to communicate, is met
IEC61375-2-5 and IEC61375-3-4 standard.Ethernet exchanging machine equipment based on the embodiment of the present application can be compatible with EN-
50155 standards meet railway vehicular applications.
In one embodiment, three-tier switch chip is according to system data list item, with recording in each compartment the IP of equipment
Location information, and it is based on each IP address information, generate NAT table item；Three-tier switch chip generates routing table also according to NAT table item
, and route table items are added in hardware route list item, generate hardware table item.
Specifically, three-tier switch chip can be according to the system data list item that TTDP is recorded, record is each in real time
The IP address information of node, i.e., the IP address information of each equipment in compartment.Based on the IP address information got, L3 Switching
Machine core piece produces NAT table item, configures kernel routing function and adds kernel NAT table item.Further, three-tier switch chip
Route table items can be generated according to NAT table item, and the route table items of generation are added in hardware route list item, generate hardware list
?.
It should be noted that in the Ethernet data transmission process of train, system data list item, NAT table item, routing table
Item and hardware table item need to keep the consistent of information.That is, upper layer software (applications) meeting maintenance system data table items, kernel can also safeguard NAT
List item and route table items, hardware are also required to maintenance hardware route list item, at three the information of the list item of place maintenance need real-time update,
Keep unified, to guarantee the reliability and real-time of Ethernet data transmission.
In a specific example, as shown in figure 3, Fig. 3 is ETBN backbone switches core board in one embodiment
Address conversion schematic diagram, R-NAT is a kind of address conversion method based on ETB and ECN, be used for track train network consisting,
It can be based on IEC61375 standard implementation.Specifically, R-NAT can be realized based on Linux and three-tier switch chip, realize step such as
Under:
1, the system data list item recorded according to TTDP, records the IP address information of each node in real time.
2, software NAT table item is generated, kernel routing function is configured, adds kernel NAT table item.
3, route table items are added in the hardware route list item of three-tier switch chip, generate hardware table item.
In one embodiment, three-tier switch chip obtains status information by TTDP HELLO data frame, and updates
System data list item.
Specifically, TTDP HELLO data frame can be used to obtain the state in each compartment of train letter in three-tier switch chip
Breath and facility information, and system data list item is updated, guarantee the real-time of system data list item.
In one embodiment, as shown in figure 4, Fig. 4 is the of ETBN backbone switches core board in one embodiment
Two schematic diagrams further include memory chip；Three-tier switch chip connects memory chip.
Specifically, exchanger core plate may also include the memory chip of connection three-tier switch chip.
In a specific example, memory chip can be DDR3 memory chip.Storage table is equivalent to inside DDR3, and
The retrieval of table is similar, needs first to specify row address (row), then specified column address (column), thus can accurately look for
To the cell of needs.For DDR3 memory chip, cell is known as basic unit of storage (namely every time can be out of this DDR3
Deposit the minimum data of chip reading).Storage table is known as logic bank, and DDR3 memory chip includes 8 bank, that is to say, that is had
Table is stored as 8, so the process of addressing is the first specified address bank, then specified row address, finally refers to that column address is come
Determine basic unit of storage, the size of each basic unit of storage is equal to the data line bit wide of the DDR3 chip, that is, every time
The minimum data length that can be read from single DDR3 chip.
In one embodiment, as shown in figure 4, further including switching power supply；Three-tier switch chip connection switch is steady
Voltage source；Switching power supply connects memory chip.
Specifically, exchanger core plate may also include switching power supply；Switching power supply is separately connected three layers of friendship
It changes planes chip and memory chip, corresponding normal voltage can be provided for each chip.Switching power supply has using simple, efficiency
Height converts the features such as pressure difference is big, current output capability is strong, calorific value is small, and the reliability of exchanger core plate can be improved.
In one embodiment, as shown in figure 5, Fig. 5 is the of ETBN backbone switches core board in one embodiment
Three schematic diagrams, switching power supply include the first power conversion chip for connecting three-tier switch chip, second source
Conversion chip and third power conversion chip；Third power conversion chip connects memory chip.
Specifically, switching power supply may include three kinds of power conversion chips, different normal voltages is provided respectively, with
Meet the power demands of exchanger core plate.
In a specific example, the first power conversion chip can be RT8210BGSP, provide 1.0V (volt) power supply；The
Two power conversion chips can be RT7264AZQW, provide 3.3V power supply；Third power conversion chip can be RT7266ZSP, provide
1.5V power supply.
In one embodiment, interface circuit is gigabit interface circuit, can cover the Ethernets such as gigabit, 100,000,000 and 10,000,000
Interface.
In one embodiment, as shown in Figure 6,7, Fig. 6 is ETBN backbone switches core board in one embodiment
4th schematic diagram, Fig. 7 are the circuit construction of electric power schematic diagram of ETBN backbone switches core board in one embodiment.
Three-tier switch chip is BCM53344, and interface circuit is 16 tunnel gigabit interface circuits, and memory chip is DDR3 memory chip, is opened
It closes regulated power supply and belongs to power circuit.
Three-tier switch chip BCM53344 connects with 16 tunnel gigabit interface circuits, DDR3 memory chip and power circuit respectively
It connects.Three-tier switch chip BCM53344 is Botong chip BCM53344, is mounted with Linux platform；BCM53344 for realizing
The conversion of the function of rail traffic ETBN backbone switches, such as R-NAT railway private network address and TTDP, realize vehicle-mounted set
Standby data ethernet network transmission.
Wherein, BCM53344 is a high performance switch chip with heap azido functional, default work in little endian mode,
16 full duplex gigabit ethernet ports for being embedded in GPHY are provided；Integrated 1.5MB (MByte) caches data message
Internal memory；Support IPv4 and IPv6 agreement, double label VLANs (Virtual Local Area Network, virtual LAN)
With QoS (Quality of Service)；It is internally integrated the ARM Cotex-A9 processor of high performance 400MHz (megahertz).
Further, DDR3 memory chip can be MT41K128M16JT；It is run for three-tier switch chip BCM53344
When memory.In addition, three-tier switch chip can establish independent project for each compartment, obtain one according to the direction in compartment
A total system data list item, wherein the contents of a project are numbered comprising compartment, network identity, the information such as device identification；Timing is inquired
Carriage status obtains each compartment facility information, maintenance system data table items；When there is compartment to be inserted into or leave, pass through
List item is added or deleted to TTDP HELLO data frame acknowledgment carriage status, dynamic.
For the embodiment of the present application for realizing the function of rail traffic ETBN backbone switches, such as R-NAT railway is dedicated
Network address translation and TTDP realize mobile unit data ethernet network transmission；Catenet can be divided into hierarchical subnet,
It supports the automatic IP of ETB to redistribute and allow data and information inter-network to communicate, meets IEC61375-2-5 and IEC61375-3-4
Standard meets railway vehicular applications.
In one embodiment, a kind of control method based on above-mentioned ETBN backbone switches core board, such as Fig. 8 are provided
Shown, Fig. 8 is the first schematic flow chart of control method in one embodiment, comprising:
Step S110 is obtained the status information and facility information in each compartment based on TTDP, by interface circuit, and is based on shape
State information and facility information generate system data list item.
Step S120 is based on system data list item, generates NAT table item and hardware table item, and according to NAT table item and hardware list
Item carries out Ethernet data transmission.
Specifically, chip can be based on TTDP, the information obtained by interface circuit is handled, each compartment is obtained
Status information and facility information, and system data list item is generated according to the status information in each compartment and facility information.Based on system
Data table items, chip produce NAT table item and hardware table item, the Ethernet data transmission for ranks vehicle device of going forward side by side.Based on this, core
Piece can support the automatic IP of ETB to redistribute, and realize the function of rail traffic ETBN backbone switches, and such as R-NAT railway is special
With network address translation and TTDP, the data ethernet network transmission of mobile unit is realized, improve Ethernet transmission in rail traffic
Reliability and real-time；Meanwhile, it is capable to which catenet to be divided into hierarchical subnet, data and information inter-network is allowed to communicate,
Meet IEC61375-2-5 and IEC61375-3-4 standard, meets railway vehicular applications.
In one embodiment, as shown in figure 9, Fig. 9 is the second schematic flow chart of control method in one embodiment,
Based on system data list item, the step of generating NAT table item and hardware table item, includes:
Step S122 records the IP address information of the equipment in each compartment according to system data list item, and is based on each IP address
Information generates NAT table item.
Step S124 generates route table items according to NAT table item, and route table items is added in hardware route list item, raw
At hardware table item.
Specifically, chip generates the process of NAT table item and hardware table item can include: the system handled according to TTDP
Data table items, record the IP address information of the equipment in each compartment in train, and generate NAT table item；And then generate route table items and
Hardware table item.
In one embodiment, as shown in Figure 10, Figure 10 is the third schematic flow of control method in one embodiment
Figure is obtained the status information and facility information in each compartment based on TTDP, by interface circuit, and is believed based on status information and equipment
Breath generated after the step of system data list item, further includes:
Step S112 obtains status information by TTDP HELLO data frame, and updates system data list item.
Include: according to the step of NAT table item and hardware table item progress Ethernet data transmission
Step S126 extracts the header of the data message received and pre-processes to data message, obtains datagram
The address information of text.
Step S128 is based on address information, is matched using NAT table item and hardware table item to data message, obtained pair
The port answered.
Step S130, the queue scheduling of data message is carried out according to scheduling mechanism, and will be counted according to the result of queue scheduling
The equipment for being sent to port connection according to message.
Specifically, TTDP HELLO data frame can be used also to obtain the status information in each compartment in chip, and safeguard, more
New system data table items.In addition, the step of chip carries out Ethernet data transmission according to NAT table item and hardware table item can include:
The data message that chip receiving port is got extracts the header of the message, shifts to an earlier date for operations such as subsequent searches, matching and processing
It pre-processes；Address information of the chip according to data message, is matched in NAT table item and hardware table item, data can be obtained
The corresponding port of message；Chip according to scheduling mechanism to the carry out queue scheduling of data message, and the result according to queue scheduling
Message is sent, finally data message is sent to the equipment that corresponding port is connected.
It should be noted that the address information of data message may include the mac address information of data message, IP address information
Deng.The processing that chip swaps data message and routes can obtain the corresponding port of the data message and transmission path.Core
The scheduling mechanism that piece uses may be based on Buffer Utilization and be scheduled, such as when Buffer Utilization is excessively high, and caching can be performed
The processing of control or packet loss；The queuing scheduling mechanism of data message can there are many, be not particularly limited herein.
Based on this, the data message that the embodiment of the present application can get port is sent to corresponding port, realizes ether
Net interacted with the data message of train apparatus and train apparatus between data message interaction.
In one embodiment, as shown in figure 11, Figure 11 is the 4th schematic flow of control method in one embodiment
Figure, extracts the header of the data message received and pre-processes to data message, obtain the address information of data message
After step, further includes:
Step S127 carries out safety detection to pretreated data message；Safety detection includes at the mirror image based on stream
It manages and/or the rate based on stream detects.
Based on address information, data message is matched using NAT table item and hardware table item, obtains corresponding port
After step, further includes:
Step S129, according to accesses control list and the preset field of data message, in the data message after matching
Corresponding label is added；Preset field includes any one or any combination in following information: source MAC, purpose MAC
Location, source IP address, purpose IP address and TCP/UDP port numbers；Label includes forwarding label, abandons label, speed limit label
And at least one of field modification label.
The queue scheduling of data message is carried out according to scheduling mechanism, and the result according to queue scheduling sends data message
To port connect equipment the step of include:
Step S132, the equipment that the data message with forwarding label is sent to corresponding port connection.
Specifically, chip can carry out safety detection to the data message that port is got, built in hardware is provided and is examined safely
Survey mechanism effectively can detect and protect dos attack.Specifically, safety detection can realize mirror image processing based on stream, be based on
The functions such as the rate detection of stream.Also, chip can also support accesses control list (Access Control List, ACL), poor
Sub-service business and QoS etc.；Specifically, chip can be according to the preset field of the data message after accesses control list and matching, for this
Corresponding label is added in data message.
It should be noted that preset field include source MAC, target MAC (Media Access Control) address, source IP address, purpose IP address, with
And the other standards such as port numbers of TCP/UDP field or custom field；Label is used to indicate the subsequent processing of the data message
Step specifically may include forwarding label, discarding label, speed limit label and field modification label etc..Data message after matching
If having forwarding label, chip can send it to corresponding port；If with label is abandoned, chip can be lost
It abandons；If having speed limit label, chip controls transmission bandwidth when sending the data message；If modifying label with field,
Modify corresponding field, such as priority, the VLAN at place etc. in data message.
The embodiment of the present application, which is used, carries out the modes such as safety detection, tag processes to data message, improves data message and passes
Defeated safety, and then guarantee reliability of the exchanger core plate in Ethernet data transmission process.
In one embodiment, as shown in figure 12, Figure 12 is the data packet process flow of control method in one embodiment
Schematic diagram, chip may include intelligently parsing module, security engine module, L2/L3 Switching Module, content related process module, delay
Deposit management module, traffic management module and modified module.
Intelligently parsing module (Intelligent Parser Module) can mainly by full duplex resolver and HiGig+/
HiGig2 composition；Full duplex resolver includes two independent resolvers.After the data message received from port, it is introduced into this
Module is detected and is parsed, and preceding 128 byte data of data packet header is extracted, and is the operation such as subsequent searches, matching and processing
It pre-processes in advance.
Security engine module (Security Engine Module) is that chip provides built in hardware safety detection mechanism, energy
Enough effective detectings and protection DOS (Disk Operating System, disc operating system) attack, and can realize based on stream
Mirror image, based on stream rate detection etc. functions.
L2/L3 Switching Module (Lay2/Lay3Switch Module), is divided into Layer2 switching and three-layer routing.The exchange of L2
Processing operation: logic executes the distribution and inquiry of VLAN and priority, the inquiry of two layers of unknown unicast and unknown multicast, according to mesh
MAC Address forwarding data, dynamic learning MAC Address and MAC Address list item is written.The route processing of L3 operates: realization is based on
The three-layer routing function of IPv4 and IPv6 agreement, passes through longest matching original at the source IP and destination IP of inquiry unicast and multicast message
Then three-layer routing list item is matched.
Content related process module (Content Aware Processing Module) supports ACL accesses control list
(Access Control List), differential service and QoS etc..Specifically, after port receives message, filter is according to source
The other standards fields such as the port numbers of MAC Address, target MAC (Media Access Control) address, source IP address, purpose IP address and TCP/UDP or from
Field is defined, message is filtered.
Caching management module (Buffer Management Module) mainly controls the flow row of each ethernet port
For；Specifically, 8 class-based queues can be set in each exit port direction.Queue is carried out according to the scheduling mechanism of setting
Scheduling and caching.The most important feature of scheduling mechanism is to be flowed by monitoring based on CoS (Class of Service, service type)
The maximum and minimum value bandwidth metric mechanism of amount provides minimum guarantee bandwidth and maximum limitation bandwidth.
Cache management mechanism is divided into access control and two parts of access control out, by calculate the utilization rate of caching come
Manage packet buffer.Enter access control mechanisms to be used to judge whether be allowed to write to free memory with decision one packet, works as statistics
When module discovery caching reaches the threshold value into bearing data, a flow control message can be sent to low priority in priority query
Port handles flow control message in the adjacent device connected.After marginal devices reduce transmitted traffic, the buffering of exchanger chip
Control will be released from.Direction access mechanism can track the Buffer Utilization in each exit port direction out, after access is restricted,
It is newly sent to the message into direction port and will be directed and be transferred to out direction conflict queue, and be dropped.
After data message enters exchanger chip by port, the header fields of advanced row data message are matched, then by
After security engine carries out primary filtration, goes to L2 exchange or L3 routing is handled, and buffered management module is to matched packet
Execute the operations such as discarding, speed limit, modification VLAN tag.Scheduler module can carry out queue tune according to dispatching algorithm in this process
Degree, final data message will be forwarded from corresponding port.Traffic management module (Traffic Management Module) is main
The flow in direction out is managed, such as speed limit, traffic shaping.Modified module (Modification Module) is main
Specific operation is executed by the data after tag processes in content correlation module, modifies certain fields.
It should be understood that although each step in the flow chart of Fig. 8 to 11 is successively shown according to the instruction of arrow,
It is these steps is not that the inevitable sequence according to arrow instruction successively executes.Unless expressly stating otherwise herein, these steps
There is no stringent sequences to limit for rapid execution, these steps can execute in other order.Moreover, in Fig. 8 to 11 extremely
Few a part of step may include that perhaps these sub-steps of multiple stages or stage are not necessarily same to multiple sub-steps
Moment executes completion, but can execute at different times, and the execution sequence in these sub-steps or stage is also not necessarily
It successively carries out, but in turn or can be handed over at least part of the sub-step or stage of other steps or other steps
Alternately execute.
In one embodiment, a kind of control device is also provided, as shown in figure 13, Figure 13 is that dress is controlled in one embodiment
The structural schematic diagram set, comprising:
System data list item generation module 110, for obtaining the status information in each compartment based on TTDP, by interface circuit
And facility information, and system data list item is generated based on status information and facility information；
Ethernet data transmission module 120 generates NAT table item and hardware table item, and root for being based on system data list item
Ethernet data transmission is carried out according to NAT table item and hardware table item.
In one embodiment, Ethernet data transmission module includes:
NAT table item generation unit, for recording the IP address information of the equipment in each compartment according to system data list item, and
Based on each IP address information, NAT table item is generated.
Route table items for generating route table items according to NAT table item, and are added to hardware road by hardware table item generation unit
By generating hardware table item in list item.
In one embodiment, further includes:
System data list item update module, for obtaining status information, and more new system by TTDP HELLO data frame
Data table items.
Ethernet data transmission module includes:
Header extraction unit is obtained for extracting the header of the data message received and pre-processing to data message
To the address information of data message.
List item matching unit, for being based on address information, using NAT table item and hardware table item to data message progress
Match, obtains corresponding port.
Queue scheduling unit, for carrying out the queue scheduling of data message according to scheduling mechanism, and according to queue scheduling
As a result the equipment for data message being sent to port connection.
In one embodiment, Ethernet data transmission module further include:
Safety detection unit, for carrying out safety detection to pretreated data message；Safety detection includes based on stream
Mirror image processing and/or based on stream rate detection.
Label adding unit, the number for the preset field according to accesses control list and data message, after matching
According to corresponding label is added in message；Preset field includes any one or any combination in following information: source MAC,
The port numbers of target MAC (Media Access Control) address, source IP address, purpose IP address and TCP/UDP；Label includes forwarding label, abandons mark
At least one of label, speed limit label and field modification label.
Queue scheduling unit includes:
Data message forwarding unit, for the data message for having forwarding label to be sent to setting for corresponding port connection
It is standby.
Specific about control device limits the restriction that may refer to above for control method, and details are not described herein.
Modules in above-mentioned control device can be realized fully or partially through software, hardware and combinations thereof.Above-mentioned each module can
It is embedded in the form of hardware or independently of in the processor in computer equipment, computer can also be stored in a software form and set
In memory in standby, the corresponding operation of the above modules is executed in order to which processor calls.
In one embodiment, a kind of computer readable storage medium is provided, computer program is stored thereon with, is calculated
Machine program performs the steps of when being executed by processor
Obtain the status information and facility information in each compartment based on TTDP, by interface circuit, and based on status information and
Facility information generates system data list item.
Based on system data list item, generate NAT table item and hardware table item, and according to NAT table item and hardware table item carry out with
Too network data transmits.
In one embodiment, computer program is executed by processor based on system data list item, generates NAT table item and hard
When part list item, also perform the steps of
According to system data list item, the IP address information of the equipment in each compartment is recorded, and is based on each IP address information, is generated
NAT table item.
Route table items are generated according to NAT table item, and route table items are added in hardware route list item, generate hardware list
?.
In one embodiment, computer program is executed by processor based on TTDP, by interface circuit and obtains each compartment
Status information and facility information, it is also real and after the step of generating system data list item based on status information and facility information
Existing following steps:
Status information is obtained by TTDP HELLO data frame, and updates system data list item.
It is also real when computer program is executed by processor according to NAT table item and hardware table item progress Ethernet data transmission
Existing following steps:
It extracts the header of the data message received and data message is pre-processed, obtain the address of data message
Information.
Based on address information, data message is matched using NAT table item and hardware table item, obtains corresponding port.
The queue scheduling of data message is carried out according to scheduling mechanism, and the result according to queue scheduling sends data message
The equipment connected to port.
In one embodiment, computer program, which is executed by processor, extracts the header of data message received and right
After the step of data message is pre-processed, and the address information of data message is obtained, also perform the steps of
Safety detection is carried out to pretreated data message；Safety detection includes mirror image processing and/or base based on stream
It is detected in the rate of stream.
Computer program is executed by processor based on address information, using NAT table item and hardware table item to data message into
After the step of row matches, and obtains corresponding port, also perform the steps of
It is added according to accesses control list and the preset field of data message, in the data message after matching corresponding
Label；Preset field includes any one or any combination in following information: source MAC, target MAC (Media Access Control) address, source IP
The port numbers of location, purpose IP address and TCP/UDP；Label includes forwarding label, abandons label, speed limit label and field
Modify at least one of label.
Computer program is executed by processor the queue scheduling that data message is carried out according to scheduling mechanism, and according to queue tune
When data message is sent to the equipment of port connection by the result of degree, also perform the steps of
The equipment that data message with forwarding label is sent to corresponding port connection.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the computer program can be stored in a non-volatile computer
In read/write memory medium, the computer program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein,
To any reference of memory, storage, database or other media used in each embodiment provided herein,
Including non-volatile and/or volatile memory.Nonvolatile memory may include read-only memory (ROM), programming ROM
(PROM), electrically programmable ROM (EPROM), electrically erasable ROM (EEPROM) or flash memory.Volatile memory may include
Random access memory (RAM) or external cache.By way of illustration and not limitation, RAM is available in many forms,
Such as static state RAM (SRAM), dynamic ram (DRAM), synchronous dram (SDRAM), double data rate sdram (DDRSDRAM), enhancing
Type SDRAM (ESDRAM), synchronization link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM
(RDRAM), direct memory bus dynamic ram (DRDRAM) and memory bus dynamic ram (RDRAM) etc..
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
The limitation to the application range therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art,
Without departing from the concept of this application, various modifications and improvements can be made, these belong to the protection model of the application
It encloses.Therefore, the scope of protection shall be subject to the appended claims by the application.
Claims (10)
1. a kind of ETBN backbone switches core board, which is characterized in that including three-tier switch chip, and for connecting column
The interface circuit in each compartment of vehicle；The three-tier switch chip connects the interface circuit；
The three-tier switch chip obtains the status information and equipment in each compartment based on TTDP, by the interface circuit
Information, and system data list item is generated based on the status information and the facility information；
The three-tier switch chip is based on the system data list item, generates NAT table item and hardware table item, and according to described
NAT table item and the hardware table item carry out Ethernet data transmission.
2. ETBN backbone switches core board according to claim 1, which is characterized in that
The three-tier switch chip records the IP address information of equipment in each compartment according to the system data list item,
And it is based on each IP address information, generate the NAT table item；
The three-tier switch chip generates route table items also according to the NAT table item, and the route table items are added to firmly
In part route table items, the hardware table item is generated.
3. ETBN backbone switches core board according to claim 1, which is characterized in that
The three-tier switch chip obtains the status information by TTDP HELLO data frame, and updates the system data
List item.
4. according to claim 1 to ETBN backbone switches core board described in 3 any one, which is characterized in that further include
Memory chip and switching power supply；
The three-tier switch chip is separately connected the memory chip and the switching power supply；The switching power supply
Connect the memory chip.
5. ETBN backbone switches core board according to claim 4, which is characterized in that the switching power supply packet
The first power conversion chip for connecting the three-tier switch chip is included, second source conversion chip and third power supply convert core
Piece；
The third power conversion chip connects the memory chip.
6. a kind of control method based on ETBN backbone switches core board described in claim 1 to 5 any one, special
Sign is, comprising:
Obtain the status information and facility information in each compartment based on TTDP, by interface circuit, and based on the status information and
The facility information generates system data list item；
Based on the system data list item, NAT table item and hardware table item are generated, and according to the NAT table item and the hardware list
Item carries out Ethernet data transmission.
7. control method according to claim 6, which is characterized in that be based on the system data list item, generate NAT table item
And the step of hardware table item, includes:
According to the system data list item, the IP address information of the equipment in each compartment is recorded, and is based on each IP address
Information generates the NAT table item；
Route table items are generated according to the NAT table item, and the route table items are added in hardware route list item, described in generation
Hardware table item.
8. control method according to claim 6 or 7, which is characterized in that obtain each vehicle based on TTDP, by interface circuit
The status information and facility information in compartment, and the step of system data list item is generated based on the status information and the facility information
Later, further includes:
The status information is obtained by TTDP HELLO data frame, and updates the system data list item；
Include: according to the step of NAT table item and hardware table item progress Ethernet data transmission
It extracts the header of the data message received and the data message is pre-processed, obtain the data message
Address information；
Based on the address information, the data message is matched using the NAT table item and the hardware table item, is obtained
Corresponding port；
Carry out the queue scheduling of the data message according to scheduling mechanism, and according to the result of the queue scheduling by the data
The equipment that message is sent to the port connection.
9. control method according to claim 8, which is characterized in that extract the header of the data message received and right
After the step of data message is pre-processed, and the address information of the data message is obtained, further includes:
Safety detection is carried out to the pretreated data message；The safety detection include mirror image processing based on stream and/
Or the rate detection based on stream；
Based on the address information, the data message is matched using the NAT table item and the hardware table item, is obtained
After the step of corresponding port, further includes:
It is added according to accesses control list and the preset field of the data message, in the data message after matching corresponding
Label；The preset field includes any one or any combination in following information: source MAC, target MAC (Media Access Control) address, source
The port numbers of IP address, purpose IP address and TCP/UDP；The label includes forwarding label, abandons label, speed limit label
And at least one of field modification label；
Carry out the queue scheduling of the data message according to scheduling mechanism, and according to the result of the queue scheduling by the data
Message is sent to the step of equipment of port connection and includes:
The equipment that data message with the forwarding label is sent to corresponding port connection.
10. a kind of control device characterized by comprising
System data list item generation module, for obtaining the status information and equipment in each compartment based on TTDP, by interface circuit
Information, and system data list item is generated based on the status information and the facility information；
Ethernet data transmission module is used for based on the system data list item, generation NAT table item and hardware table item, and according to
The NAT table item and the hardware table item carry out Ethernet data transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910015447.9A CN109391566B (en) | 2019-01-08 | 2019-01-08 | Core board, control method and device of ETBN (Ethernet packet network) backbone network switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910015447.9A CN109391566B (en) | 2019-01-08 | 2019-01-08 | Core board, control method and device of ETBN (Ethernet packet network) backbone network switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109391566A true CN109391566A (en) | 2019-02-26 |
| CN109391566B CN109391566B (en) | 2022-02-22 |
Family
ID=65430988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910015447.9A Active CN109391566B (en) | 2019-01-08 | 2019-01-08 | Core board, control method and device of ETBN (Ethernet packet network) backbone network switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109391566B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111800475A (en) * | 2020-06-13 | 2020-10-20 | 深圳市三旺通信股份有限公司 | System and method for controlling train topology equipment based on LTE |
| CN112134759A (en) * | 2020-09-22 | 2020-12-25 | 中车唐山机车车辆有限公司 | Train Ethernet test system |
| CN112862060A (en) * | 2019-11-28 | 2021-05-28 | 南京大学 | Content caching method based on deep learning |
| CN114124786A (en) * | 2020-08-26 | 2022-03-01 | 中车株洲电力机车研究所有限公司 | R-NAT device for rail transit train and ETBN exchanger |
| CN116366579A (en) * | 2023-06-01 | 2023-06-30 | 惠州迈腾伟业科技发展有限公司 | Network switch interaction method and network switch |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104243536A (en) * | 2013-06-24 | 2014-12-24 | 中国科学院软件研究所 | Semi-physical simulation system of high-speed train control network |
| US20170187545A1 (en) * | 2014-04-21 | 2017-06-29 | Mitsubishi Electric Corporation | Communication apparatus, car integrated management system, and routing table update method |
| CN108881511A (en) * | 2018-06-11 | 2018-11-23 | 天津卓越信通科技有限公司 | A kind of homogeneous network communication means |
-
2019
- 2019-01-08 CN CN201910015447.9A patent/CN109391566B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104243536A (en) * | 2013-06-24 | 2014-12-24 | 中国科学院软件研究所 | Semi-physical simulation system of high-speed train control network |
| US20170187545A1 (en) * | 2014-04-21 | 2017-06-29 | Mitsubishi Electric Corporation | Communication apparatus, car integrated management system, and routing table update method |
| CN108881511A (en) * | 2018-06-11 | 2018-11-23 | 天津卓越信通科技有限公司 | A kind of homogeneous network communication means |
Non-Patent Citations (2)
| Title |
|---|
| 李元轩: ""列车级以太网拓扑发现协议的实现研究"", 《铁道机车车辆》 * |
| 汪顺德等: ""基于ETB列车网络地址转换方法研究"", 《铁道机车车辆》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112862060A (en) * | 2019-11-28 | 2021-05-28 | 南京大学 | Content caching method based on deep learning |
| CN112862060B (en) * | 2019-11-28 | 2024-02-13 | 南京大学 | Content caching method based on deep learning |
| CN111800475A (en) * | 2020-06-13 | 2020-10-20 | 深圳市三旺通信股份有限公司 | System and method for controlling train topology equipment based on LTE |
| CN114124786A (en) * | 2020-08-26 | 2022-03-01 | 中车株洲电力机车研究所有限公司 | R-NAT device for rail transit train and ETBN exchanger |
| CN114124786B (en) * | 2020-08-26 | 2023-05-23 | 中车株洲电力机车研究所有限公司 | R-NAT device and ETBN switch for rail transit train |
| CN112134759A (en) * | 2020-09-22 | 2020-12-25 | 中车唐山机车车辆有限公司 | Train Ethernet test system |
| CN112134759B (en) * | 2020-09-22 | 2022-02-11 | 中车唐山机车车辆有限公司 | Train Ethernet test system |
| CN116366579A (en) * | 2023-06-01 | 2023-06-30 | 惠州迈腾伟业科技发展有限公司 | Network switch interaction method and network switch |
| CN116366579B (en) * | 2023-06-01 | 2023-08-11 | 惠州迈腾伟业科技发展有限公司 | Network switch interaction method and network switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109391566B (en) | 2022-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109391566A (en) | ETBN backbone switches core board, control method and device | |
| JP3645734B2 (en) | Network relay device and network relay method | |
| US9755947B2 (en) | Hierarchical self-organizing classification processing in a network switch | |
| CN102970227B (en) | The method and apparatus of VXLAN message repeating is realized in ASIC | |
| US9727508B2 (en) | Address learning and aging for network bridging in a network processor | |
| CN1874313B (en) | Method of processing packet and metwork device | |
| CN107689931A (en) | It is a kind of that Ethernet exchanging function system and method are realized based on domestic FPGA | |
| CN1875585B (en) | Dynamic unknown L2 flooding control with MAC limits | |
| CN102821032B (en) | A kind of method of fast-forwarding packet and three-layer equipment | |
| CN105791128B (en) | A kind of IP packet receiving handling method and device | |
| CN104065582B (en) | A kind of message transmitting method and gateway device | |
| CN101242362B (en) | Find key value generation device and method | |
| CN101325554B (en) | Method for establishing route, forwarding chip and three-layer switchboard | |
| CN105306368B (en) | A kind of transmission method and device of data message | |
| CN107231307A (en) | Mthods, systems and devices for preventing flow switching between subnet in data center architecture | |
| JP2006025121A (en) | Frame transfer method and device therefor | |
| CN103188042A (en) | Matching method and matching accelerator of Internet protocol (IP) data package | |
| CN108933756A (en) | A kind of processing method of data packet, access network equipment and computer readable storage medium | |
| CN106713144A (en) | Read-write method of message exit information and forwarding engine | |
| CN102970239B (en) | Flow processing method, flow processing device, router and flow processing system | |
| CN104158743B (en) | Across the card retransmission method of message and device of distribution router | |
| CN107528794A (en) | A kind of data processing method and device | |
| CN101156354A (en) | Data processing method, network bridge and bridge network | |
| CN100452763C (en) | Network unit for forwarding an Ethernet packet | |
| CN114124786B (en) | R-NAT device and ETBN switch for rail transit train |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |