CN115633279B - OSU (open service Unit) cross equipment and data transmission method based on OSU cross equipment - Google Patents
OSU (open service Unit) cross equipment and data transmission method based on OSU cross equipment Download PDFInfo
- Publication number
- CN115633279B CN115633279B CN202211629741.7A CN202211629741A CN115633279B CN 115633279 B CN115633279 B CN 115633279B CN 202211629741 A CN202211629741 A CN 202211629741A CN 115633279 B CN115633279 B CN 115633279B
- Authority
- CN
- China
- Prior art keywords
- osu
- data packet
- unit
- service
- tributary
- 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.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
- H04J3/1605—Fixed allocated frame structures
- H04J3/1652—Optical Transport Network [OTN]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0066—Provisions for optical burst or packet networks
Abstract
The invention provides OSU cross equipment and a data transmission method based on the OSU cross equipment, which relate to the technical field of optical communication, and comprise the following steps: the system comprises a first OSU branch unit, N second OSU branch units and a main system, wherein N is an integer larger than 1, the first OSU branch unit is connected to a first end of the main system, and the N second OSU branch units are connected to a second end of the main system; the first OSU branch unit is used for generating a first data packet corresponding to the first service and sending the first data packet to the main system under the condition of receiving the first service; the main system is used for sending the first data packet to at least one first target unit in the N second OSU branch units under the condition of receiving the first data packet; and the second OSU branch unit is used for analyzing the first data packet under the condition of receiving the first data packet to obtain a first service corresponding to the first data packet. The invention reduces the cost, time delay and power consumption of OTN service bearing.
Description
Technical Field
The invention relates to the technical field of optical communication, in particular to OSU (optical fiber unit) cross equipment and a data transmission method based on the OSU cross equipment.
Background
An Optical Transport Network (OTN) has technical advantages of large bandwidth, hard pipe, multi-service carrying capability, and an Operation and Maintenance management (OAM) mechanism at a telecommunication level, and is a carrying technology widely used in the industry, and is now deployed in a large scale in a backbone Network and a metropolitan area Network, so as to provide a high-quality pipe for customer services at a rate of 1Gbps or more.
Currently, for OTN traffic bearers, there are also problems of high cost, high latency and high power consumption.
Disclosure of Invention
The invention provides OSU (open service Unit) cross equipment and a data transmission method based on the OSU cross equipment, which are used for solving the problems of high cost, high time delay and high power consumption of OTN (optical transport network) service bearing in the prior art.
The present invention provides an OSU crossing device, comprising: the system comprises a first OSU branch unit, N second OSU branch units and a main system, wherein N is an integer larger than 1, the first OSU branch unit is connected to a first end of the main system, and the N second OSU branch units are connected to a second end of the main system;
the first OSU branch unit is used for generating a first data packet corresponding to a first service and sending the first data packet to the main system under the condition of receiving the first service;
the main system is configured to send the first data packet to at least one first target unit of the N second OSU tributary units when receiving the first data packet;
and the second OSU branch unit is used for analyzing the first data packet under the condition of receiving the first data packet to obtain a first service corresponding to the first data packet.
According to an OSU crossing device provided by the present invention, the first OSU tributary unit comprises: OSU framer, packer and Ethernet MAC layer;
the OSU framer is used for generating a first OSU frame corresponding to the first service based on the first service;
the packetizer is for converting the first OSU frame into a first data packet comprising a first Ethernet frame;
the ethernet MAC layer is configured to send the first data packet to the host system.
According to the OSU crossing device provided by the present invention, the second OSU branch unit is further configured to generate a second data packet corresponding to a second service when the second service is received, and send the second data packet to the main system;
the main system is further configured to send the second data packet to the first OSU tributary unit when receiving the second data packet;
the first OSU tributary unit is further configured to, in a case that the second data packet is received, parse the second data packet to obtain a second service corresponding to the second data packet.
According to the OSU crossing device provided by the invention, the first OSU tributary unit further comprises a depacketizer and an OSU deframer;
the de-packetizer is configured to convert a second ethernet frame included in the second data packet into a second OSU frame when receiving the second data packet transmitted through the ethernet MAC layer;
and the OSU de-framing device is used for analyzing the second OSU frame to obtain a second service corresponding to the second OSU frame.
According to the OSU crossing device provided by the present invention, the unpacker is further configured to, when the number of OSU deframers is greater than 1, parse an OSU identifier OSUid field included in the second OSU frame, and send the second OSU frame to an OSU deframer corresponding to the OSUid field.
According to the OSU crossing device provided by the invention, the main system comprises an ethernet switch and a processing unit, wherein the processing unit is respectively connected to the ethernet switch, the first OSU tributary unit and the N second OSU tributary units;
the processing unit is configured to configure the first OSU tributary unit to modify a target media access control layer DMAC in the first data packet into a source media access control layer SMAC of the first target unit;
the ethernet switch is configured to receive the first packet, and send the first packet to the first target unit based on the DMAC in the first packet and/or the first control information from the processing unit.
According to an OSU intersection device provided by the present invention, the processing module is further configured to modify the DMAC in the first data packet into a multicast SMAC when there are at least two first target units, where a multicast group corresponding to the multicast SMAC includes the first OSU tributary unit and the at least two first target units;
the ethernet switch is further configured to receive the first data packet, and send the first data packet to the at least two first target units based on the DMAC in the first data packet and/or the second control information from the processing unit.
According to an OSU crossbar device provided by the present invention, the first OSU tributary unit is further configured to notify the processing module to select a unit in a normal state from the N second OSU tributary units as the second target unit, and configure the second target unit to modify the DMAC in the second packet into the SMAC of the first OSU tributary unit, when it is determined that a second target unit in the N second OSU tributary units is in an abnormal state;
the ethernet switch is further configured to receive the second data packet, and send the second data packet to the first OSU tributary unit based on the DMAC in the second data packet and/or the third control information from the processing unit.
The invention also provides a data transmission method based on the OSU crossing equipment, and the OSU crossing equipment comprises the following steps: the system comprises a first OSU branch unit, N second OSU branch units and a main system, wherein N is an integer larger than 1, the first OSU branch unit is connected to a first end of the main system, and the N second OSU branch units are connected to a second end of the main system;
the method comprises the following steps:
the first OSU branch unit generates a first data packet corresponding to a first service under the condition of receiving the first service;
and the first OSU branch unit sends the first data packet to at least one first target unit in the N second OSU branch units through the main system.
According to the method provided by the present invention, the generating, by the first OSU tributary unit, a first data packet corresponding to a first service when the first service is received includes:
the first OSU branch unit generates a first OSU frame corresponding to the first service based on the first service under the condition that the first service is received;
the first OSU tributary unit converts the first OSU frame into a first data packet comprising a first ethernet frame.
The invention also provides an electronic device, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the program to realize the data transmission method based on the OSU crossing device.
The present invention also provides a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the OSU intersection device-based data transmission method as described in any of the above.
The present invention also provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the computer program implements the data transmission method based on the OSU crossing device as described in any one of the above.
The OSU cross device of the embodiment of the invention is used for optimizing and expanding the traditional OTN device, and the OSU can provide a finer time slot granularity and a simpler bandwidth lossless adjustment mechanism on the premise of retaining the advantages of the traditional OTN hard pipeline, rich OAM and the like, support the efficient bearing of customer services with the speed of 2M to 100Gbps, ensure that the OTN has the capability of sinking from a backbone core to an access terminal, and effectively reduce the cost, time delay and power consumption of the OTN service bearing.
Drawings
In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is one of the schematic structural diagrams of an OSU crossing device provided by the present invention;
FIG. 2 is a second schematic structural diagram of an OSU crossing device provided in the present invention;
fig. 3 is a schematic structural diagram of a first OSU tributary unit in the OSU crossover device provided by the present invention;
fig. 4 is a schematic structural diagram of an OSU frame in the OSU crossing device provided by the present invention;
fig. 5 is a schematic structural diagram of a first data packet into which an OSU frame is converted in the OSU crossing device provided by the present invention;
FIG. 6 is a third schematic structural diagram of an OSU crossing apparatus provided in the present invention;
fig. 7 is a schematic flow chart of a data transmission method based on OSU crossing equipment provided by the present invention;
fig. 8 is a schematic structural diagram of an electronic device provided in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The OSU crossing device and the data transmission method based on the OSU crossing device of the present invention are described below with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of an OSU crossing device provided in the present invention, and as shown in fig. 1, an Optical Service Unit (OSU) crossing device 100 includes: a first OSU branch unit 101, N second OSU branch units 102, and a main system 103, where N is an integer greater than 1, the first OSU branch unit 101 is connected to a first end of the main system 103, and the N second OSU branch units 102 are connected to a second end of the main system 103;
the first OSU branch unit 101 is configured to, in a case that a first service is received, generate a first data packet corresponding to the first service, and send the first data packet to the host system 103;
the main system 103 is configured to send the first data packet to at least one first target unit of the N second OSU branch units 102 when receiving the first data packet;
the second OSU tributary unit 102 is configured to, in a case that the first data packet is received, parse the first data packet to obtain a first service corresponding to the first data packet.
Specifically, in the related art, the OTN service bearer has the problems of high cost, high latency and high power consumption, and is difficult to be applied to a low-cost, low-latency, low-power consumption integrated service bearer scheme mainly based on metro application.
In the embodiment of the present invention, the first OSU tributary unit is connected to the N second OSU tributary units through the main system, and is configured to perform service bearer with at least one of the N second OSU tributary units. Specifically, the first OSU tributary unit may send the first service to at least one first target unit of the N second OSU tributary units through the main system in the form of a first data packet under the condition that the first service is received, and then the first target unit analyzes the first data packet to obtain a corresponding first service, thereby implementing OSU service bearer.
Optionally, the first service is, for example, a customer service.
Alternatively, the host system may include an ethernet switch with the core of the data switch being an ethernet switch.
Taking a first OSU tributary unit as an OSU tributary unit a, N second OSU tributary units including an OSU tributary unit B and an OSU tributary unit C, and a main system including an ethernet switch as an example, fig. 2 is a second schematic structural diagram of the OSU crossing device provided by the present invention, as shown in fig. 2.
OSU tributary unit A is connected to the first end of ethernet switch, and OSU tributary unit B and OSU tributary unit C all are connected to the second end of ethernet switch, and OSU tributary unit A can send first data packet to OSU tributary unit B and/or OSU tributary unit C through ethernet switch, and OSU tributary unit A also can receive the second data packet that comes from OSU tributary unit B and/or OSU tributary unit C through ethernet switch.
In the OSU crossing device provided in the embodiment of the present invention, the first OSU tributary unit may send the first service to at least one first target unit of the N second OSU tributary units through the main system in the form of a first data packet, thereby implementing the OSU service bearer, the OSU crossing device in the embodiment of the present invention is an optimization and extension of the conventional OTN device, and the OSU may provide a finer time slot granularity and a simpler bandwidth lossless adjustment mechanism on the premise of maintaining the advantages of the conventional OTN hard pipe, OAM, and the like, and support the high-efficiency bearer of the client service at a rate of 2m to 100gbps, so that the OTN has the capability of sinking from the backbone core to the access end, and may effectively reduce the cost, delay, and power consumption of the OTN service bearer, and further may provide a comprehensive service bearer scheme with low cost, low delay, and low power consumption for the small bandwidth client services such as the private line service and the video service, and the like.
Optionally, fig. 3 is a schematic structural diagram of a first OSU branch unit in the OSU crossing device provided by the present invention, and as shown in fig. 3, the first OSU branch unit 101 may include: OSU framer 1011, packetizer 1012, and ethernet MAC layer 1013;
the OSU framer 1011 is configured to generate a first OSU frame corresponding to the first service based on the first service;
the packetizer 1012 is configured to convert the first OSU frame into a first packet comprising a first ethernet frame;
the ethernet MAC layer 1013 is configured to send the first data packet to the host system 103.
Specifically, the first OSU tributary unit 101 may, when receiving the first service, convert the first service into a first OSU frame corresponding to the first service by using the OSU framer 1011, further convert the first OSU frame into a first data packet including a first ethernet frame by using the packetizer 1012, where the first data packet may be understood as an ethernet packet, and then send the first data packet to the host system 103 through the ethernet MAC layer 1013.
Fig. 4 is a schematic structural diagram of an OSU frame in the OSU crossing device provided by the present invention, as shown in fig. 4, the OSU frame includes a general overhead, a mapping overhead, a CRC8, and a payload area, which account for 191 frames;
fig. 5 is a schematic structural diagram of a first data packet converted from an OSU frame in the OSU crossing device provided by the present invention, and as shown in fig. 5, the first data packet includes: the Destination media access control layer (Destination MAC, DMAC), the Source media access control layer (Source MAC, SMAC), the type, the OSU identifier (OSUid), the OSU frame, and the CRC32, which together occupy 211 frames, and it can be seen that the packetizer 1012 may set the first OSU frame at the position of the OSU frame of frames 17 to 208 in the first packet.
Alternatively, the second OSU branch unit 102 may have the same structure as the first OSU branch unit 101.
Optionally, the second OSU branch unit 102 may be further configured to, in a case that a second service is received, generate a second data packet corresponding to the second service, and send the second data packet to the host system 103;
the main system 103 is further configured to send the second data packet to the first OSU tributary unit 101 when receiving the second data packet;
the first OSU tributary unit 101 is further configured to, in a case that the second data packet is received, parse the second data packet to obtain a second service corresponding to the second data packet.
Specifically, the second OSU tributary unit 102 may generate a second data packet corresponding to the second service when receiving the second service, send the second data packet to the main system 103, so that the main system 103 forwards the second data packet to the first OSU tributary unit 101, and then the first OSU tributary unit 101 analyzes the second data packet when receiving the second data packet, so as to obtain the second service corresponding to the second data packet;
alternatively, the second OSU tributary unit 102 may generate a second data packet corresponding to the second service by using the OSU framer and the packetizer included in the second OSU tributary unit 102, and send the second data packet to the host system 103.
Optionally, as shown in fig. 3, the first OSU tributary unit 101 may further include a unpacker 1014 and an OSU deframer 1015;
the decapsulator 1014 is configured to, upon receiving the second packet transmitted through the ethernet MAC layer 1013, convert a second ethernet frame included in the second packet into a second OSU frame;
the OSU deframer 1015 is configured to parse the second OSU frame to obtain a second service corresponding to the second OSU frame.
Specifically, the first OSU tributary unit 101 may first receive the second data packet from the host system 103 through the ethernet MAC layer 1013, convert the second ethernet frame included in the second data packet into the second OSU frame through the de-packetizer 1014, and then analyze the second OSU frame through the OSU de-framer 1015 to obtain the second service corresponding to the second OSU frame.
Optionally, the unpacker 1014 may be further configured to, when the number of the OSU deframers 1015 is greater than 1, parse OSUid fields included in the second OSU frame, and send the second OSU frame to the OSU deframer corresponding to the OSUid fields.
Specifically, there is a case that the first OSU tributary unit 101 may include at least two OSU deframers 1015, which are respectively applicable to different OSU frames, and in the embodiment of the present invention, a corresponding OSU deframer may be determined by an OSUid field in an OSU frame, so that the determined OSU deframer parses the second OSU frame to obtain a second service corresponding to the second OSU frame.
Optionally, fig. 6 is a third schematic structural diagram of the OSU crossing device provided by the present invention, as shown in fig. 6, on the basis of the structure of the first OSU tributary unit 101 provided in fig. 3, the host system 103 includes an ethernet switch 1031 and a processing unit 1032, the processing unit 1032 is respectively connected to the ethernet switch 1031, the first OSU tributary unit 101, and the N second OSU tributary units 102, it should be noted that the N second OSU tributary units 102 and their related structures are not shown in the figure, and a connection manner between the second OSU tributary units 102 and the host system 103 may be the same as a connection manner between the first OSU tributary unit 101 and the host system 103;
optionally, the processing unit 1032 is connected to the packetizer and the depacketizer included in each of the first OSU tributary unit 101 and the N second OSU tributary units 102;
the processing unit 1032 is configured to configure the first OSU tributary unit 101 to modify the DMAC in the first data packet to the SMAC of the first target unit;
the ethernet switch 1031 is configured to receive the first data packet, and send the first data packet to the first target unit based on the DMAC in the first data packet and/or the first control information from the processing unit 1032.
Specifically, the host system 103 includes an ethernet switch 1031 and a processing unit 1032, and the processing unit 1032 may be connected to the ethernet switch 1031 through a management bus for controlling the ethernet switch 1031 to transmit the first data packet to the first target unit.
The processing unit 1032 may be connected to the packetizers and depacketizers of the first OSU tributary unit 101 and the N second OSU tributary units 102 via a management bus.
The processing unit 1032 may select a first target unit from the N second OSU tributary units 102 as a unit for data interaction with the first OSU tributary unit 101, configure the packetizer 1012 of the first OSU tributary unit 101 to modify DMAC in the first packet into SMAC of the first target unit, and the ethernet switch 1031 may receive the first packet and transmit the first packet to the first target unit based on the DMAC in the first packet and/or the first control information from the processing unit 1032.
It should be noted that the DMAC and the SMAC are filled by the first OSU tributary unit 101 according to the configuration of the processing unit 1032 and are modified in real time according to the traffic situation, and the processing unit 1032 controls the static MAC table of the ethernet switch at the same time, so as to implement configurable OSU traffic switching and forwarding.
Alternatively, the first control information may be configuration information that configures the static MAC table of the ethernet switch 1031 as the first OSU branching unit 101 to the first target unit, for example, configuration information that configures the static MAC table of the ethernet switch 1031 as the OSU branching unit a to the OSU branching unit B.
Optionally, the processing module 1032 may be further configured to modify the DMAC in the first data packet into a multicast SMAC if there are at least two first target units, where a multicast group corresponding to the multicast SMAC includes the first OSU tributary unit 1032 and the at least two first target units;
the ethernet switch 1031 is further configured to receive the first data packet, and send the first data packet to the at least two first target units based on the DMAC in the first data packet and/or the second control information from the processing unit 1032.
Specifically, in the case that the processing module 1032 selects at least two first target units, the processing module 1032 may control the packetizer 1012 of the first OSU tributary unit 101, modify the DMAC in the first packet to be multicast SMACs, and set a multicast group corresponding to the multicast SMACs to include the first OSU tributary unit 1032 and the at least two first target units, and the ethernet switch 1031 may receive the first packet and transmit the first packet to the at least two first target units based on the DMAC in the first packet and/or the second control information from the processing unit 1032.
Alternatively, the second control information may be configuration information for configuring the static MAC table of the ethernet switch 1031 as the first OSU tributary unit 101 to the at least two first target units, for example, configuration information for configuring the static MAC table of the ethernet switch 1031 as the OSU tributary units a to OSU tributary units B and OSU tributary units C.
Optionally, the first OSU tributary unit 101 may be further configured to, when determining that a second target unit of the N second OSU tributary units 102 is in an abnormal state, notify the processing module 1032 to select a unit in a normal state from the N second OSU tributary units 102 as the second target unit, configure the second target unit to modify the DMAC in the second data packet into the SMAC of the first OSU tributary unit 101;
the ethernet switch 1031 is further configured to receive the second data packet, and send the second data packet to the first OSU tributary unit 101 based on the DMAC in the second data packet and/or the third control information from the processing unit 1032.
Specifically, in the case where at least two of the N second OSU branch units 102 are to send second data packets to the first OSU branch unit 101, the first OSU branch unit 101 may select one of the units as a second target unit to receive the second data packets from the second target unit;
if the first OSU tributary unit 101 determines that the second target unit is in the abnormal state, the processing module 1032 may be notified to select a unit in the normal state from the N second OSU tributary units 102 as the second target unit, and the second target unit may be configured to modify DMAC in the second data packet into SMAC of the first OSU tributary unit 101, so as to send the second data packet to the first OSU tributary unit 101.
For example, when receiving the second data packet, if the OSU tributary unit B and the OSU tributary unit C both contain the ethernet packet of the OSU frame (the second data packet) and forward to the OSU tributary unit a, the OSU tributary unit a may select one of the packets to receive, if the packet of the OSU tributary unit B is currently selected, if the OSU tributary unit B is abnormal at a certain time, the tributary unit a may switch to select to receive the packet of the OSU tributary unit C, so as to ensure that the service bearer can be performed normally, and implement 1+1 protection of the service.
The following illustrates an OSU crossing device provided by an embodiment of the present invention.
1. The OSU crossing device consists of:
1) A host system including an Ethernet switch and a processing unit;
2) The system comprises an OSU framing and deframer, and a branch unit from the OSU to the Ethernet packet and the deframer.
2. The implementation principle of the OSU crossing equipment is as follows:
1) With the switching core of the OSU cross device, the switching core of the OSU cross device is essentially ethernet switching.
2) As shown in fig. 1, if the OSU tributary unit a is to cross the OSU tributary unit B, the OSU frame needs to be encapsulated into an ethernet packet (first data packet) by a packetizer and then sent to the ethernet switch of the main system through the ethernet MAC layer.
3) The processing unit may set the DMAC when the OSU tributary unit a is packaged as the SMAC of the OSU tributary unit B, and configure the static MAC table of the ethernet switch as the OSU tributary unit a to OSU tributary unit B. At this time, the ethernet packet of the OSU tributary unit a containing the first OSU is forwarded by the ethernet switch to the OSU tributary unit B.
4) After receiving the ethernet packet from the OSU tributary unit a, the OSU tributary unit B may obtain an OSU frame (a second OSU frame) through the decapsulator, and send the second OSU frame to the corresponding OSU decapsulator according to the OSUid field indication.
3. 1+1 Protection subnet Connection Protection (SNCP) cross service implementation:
1) To implement SNCP protection services of services from OSU tributary unit a to OSU tributary unit B and from OSU tributary unit a to OSU tributary unit C, the DMAC when OSU tributary unit a is packaged needs to be set as multicast MAC by the processing unit. The OSU branch unit A, the OSU branch unit B and the OSU branch unit C are set into a multicast group through the processing unit, and double transmission from the OSU branch unit A to the OSU branch unit B and the OSU branch unit C is achieved.
2) During receiving, if the ethernet packets containing the OSU frame are both forwarded to the OSU tributary unit a by the OSU tributary unit B and the OSU tributary unit C, the OSU tributary unit a may select one of the paths to receive, if the packet of the OSU tributary unit B is currently selected to be received, and if the OSU tributary unit B is abnormal at a certain time, the OSU tributary unit a may switch to select to receive the packet of the OSU tributary unit C, which may realize 1+1 protection of the service, and improve reliability of the service bearing.
The data transmission method based on the OSU crossing device provided by the present invention is described below, and the data transmission method based on the OSU crossing device described below and the content of the OSU crossing device described above may be referred to correspondingly.
The OSU crossing apparatus includes: the device comprises a first OSU branch unit, N second OSU branch units and a main system, wherein N is an integer larger than 1, the first OSU branch unit is connected to a first end of the main system, and the N second OSU branch units are connected to a second end of the main system;
fig. 7 is a schematic flowchart of a data transmission method based on OSU crossing equipment provided in the present invention, and as shown in fig. 7, the method includes steps 701 to 702; wherein:
In the data transmission method based on the OSU cross device provided in the embodiment of the present invention, the first OSU tributary unit may send the first service to at least one first target unit of the N second OSU tributary units through the main system in the form of the first data packet, thereby implementing the OSU service bearer, and the OSU may provide a finer time slot granularity and a simpler bandwidth lossless adjustment mechanism on the premise of retaining the advantages of the conventional OTN hard pipeline, rich OAM, and the like, and support the efficient bearer of the customer service at the rate of 2m to 100gbps, so that the OTN has the capability of sinking from the backbone core to the access terminal, and the cost, the time delay, and the power consumption of the OTN service bearer may be effectively reduced.
Optionally, when the first OSU tributary unit receives the first service, an implementation manner of generating the first data packet corresponding to the first service may include:
the first OSU branch unit generates a first OSU frame corresponding to the first service based on the first service under the condition that the first service is received;
the first OSU tributary unit converts the first OSU frame into a first data packet comprising a first ethernet frame.
Optionally, the first OSU tributary unit may receive, through the host system, a second data packet sent from at least one first target unit of the N second OSU tributary units;
and the first OSU branch unit analyzes the second data packet under the condition of receiving the second data packet to obtain a second service corresponding to the second data packet.
Optionally, when the first OSU tributary unit receives the second data packet, the analyzing the second data packet to obtain the second service corresponding to the second data packet may include:
the first OSU tributary unit converts a second Ethernet frame included in the second data packet into a second OSU frame under the condition that the second data packet is received;
and the first OSU branch unit analyzes the second OSU frame to obtain a second service corresponding to the second OSU frame.
Optionally, the first OSU tributary unit may, after converting the second ethernet frame included in the second data packet into the second OSU frame, analyze an OSU identifier OSUid field included in the second OSU frame, and an OSU deframer corresponding to the OSUid field in the first OSU tributary unit analyzes the second OSU frame to obtain the second service corresponding to the second OSU frame.
Fig. 8 is a schematic structural diagram of an electronic device provided in the present invention, and as shown in fig. 8, the electronic device may include: a processor (processor) 810, a communication Interface 820, a memory 830 and a communication bus 840, wherein the processor 810, the communication Interface 820 and the memory 830 communicate with each other via the communication bus 840. Processor 810 may invoke logic instructions in memory 830 to perform a method of data transmission based on an OSU crossing device comprising: the device comprises a first OSU branch unit, N second OSU branch units and a main system, wherein N is an integer larger than 1, the first OSU branch unit is connected to a first end of the main system, and the N second OSU branch units are connected to a second end of the main system;
the method comprises the following steps:
the first OSU branch unit generates a first data packet corresponding to a first service under the condition of receiving the first service;
and the first OSU branch unit sends the first data packet to at least one first target unit in the N second OSU branch units through the main system.
In addition, the logic instructions in the memory 830 can be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product, the computer program product including a computer program, the computer program being stored on a non-transitory computer readable storage medium, and when the computer program is executed by a processor, the computer being capable of executing the data transmission method based on the OSU crossing device provided by the above methods, the OSU crossing device including: the system comprises a first OSU branch unit, N second OSU branch units and a main system, wherein N is an integer larger than 1, the first OSU branch unit is connected to a first end of the main system, and the N second OSU branch units are connected to a second end of the main system;
the method comprises the following steps:
the first OSU branch unit generates a first data packet corresponding to a first service under the condition of receiving the first service;
and the first OSU branch unit sends the first data packet to at least one first target unit in the N second OSU branch units through the main system.
In still another aspect, the present invention also provides a non-transitory computer readable storage medium, on which a computer program is stored, the computer program being implemented by a processor to execute the data transmission method based on an OSU crossing device provided by the above methods, the OSU crossing device including: the system comprises a first OSU branch unit, N second OSU branch units and a main system, wherein N is an integer larger than 1, the first OSU branch unit is connected to a first end of the main system, and the N second OSU branch units are connected to a second end of the main system;
the method comprises the following steps:
the first OSU branch unit generates a first data packet corresponding to a first service under the condition of receiving the first service;
and the first OSU branch unit sends the first data packet to at least one first target unit in the N second OSU branch units through the main system.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. Based on the understanding, the above technical solutions substantially or otherwise contributing to the prior art may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the various embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. An optical service unit, OSU, crossover device, comprising: the system comprises a first OSU branch unit, N second OSU branch units and a main system, wherein N is an integer larger than 1, the first OSU branch unit is connected to a first end of the main system, and the N second OSU branch units are connected to a second end of the main system;
the first OSU branch unit is used for generating a first data packet corresponding to a first service and sending the first data packet to the main system under the condition of receiving the first service;
the main system is configured to send the first data packet to at least one first target unit of the N second OSU tributary units when receiving the first data packet;
the second OSU branch unit is used for analyzing the first data packet under the condition of receiving the first data packet to obtain a first service corresponding to the first data packet;
the main system comprises an Ethernet switch and a processing unit, wherein the processing unit is respectively connected to the Ethernet switch, the first OSU branch unit and the N second OSU branch units;
the processing unit is configured to configure the first OSU tributary unit to modify a target media access control layer DMAC in the first data packet into a source media access control layer SMAC of the first target unit;
the Ethernet switch is used for receiving the first data packet, and sending the first data packet to the first target unit based on the DMAC in the first data packet and/or the first control information from the processing unit;
the processing unit is further configured to modify the DMAC in the first packet to a multicast SMAC if there are at least two first target units, where a multicast group corresponding to the multicast SMAC includes the first OSU tributary unit and the at least two first target units;
the ethernet switch is further configured to receive the first data packet, and send the first data packet to the at least two first target units based on the DMAC in the first data packet and/or the second control information from the processing unit.
2. The OSU crossbar device of claim 1 wherein the first OSU tributary unit comprises: OSU framer, packer and Ethernet MAC layer;
the OSU framer is used for generating a first OSU frame corresponding to the first service based on the first service;
the packetizer is for converting the first OSU frame into a first data packet comprising a first Ethernet frame;
the ethernet MAC layer is configured to send the first data packet to the host system.
3. The OSU crossing device of claim 2 wherein,
the second OSU tributary unit is further configured to generate a second data packet corresponding to a second service and send the second data packet to the host system when the second service is received;
the main system is further configured to send the second data packet to the first OSU tributary unit when receiving the second data packet;
the first OSU tributary unit is further configured to, in a case that the second data packet is received, parse the second data packet to obtain a second service corresponding to the second data packet.
4. The OSU crossbar device of claim 3 wherein the first OSU tributary unit further comprises a unpacker and an OSU deframer;
the de-packetizer is configured to convert a second ethernet frame included in the second data packet into a second OSU frame, in a case where the second data packet transmitted through the ethernet MAC layer is received;
and the OSU de-framing device is used for analyzing the second OSU frame to obtain a second service corresponding to the second OSU frame.
5. The OSU crossing apparatus of claim 4,
and the unpacker is also used for analyzing an OSU identification OSUid field included in the second OSU frame and sending the second OSU frame to an OSU deframer corresponding to the OSUid field under the condition that the number of the OSU deframers is larger than 1.
6. The OSU crossing device of claim 1 wherein,
the first OSU tributary unit is further configured to, in a case that it is determined that a second target unit of the N second OSU tributary units is in an abnormal state, notify the processing unit to select a unit in a normal state from the N second OSU tributary units as the second target unit, configure the second target unit to modify a DMAC in a second data packet into an SMAC of the first OSU tributary unit; the second data packet is a data packet corresponding to a second service, which is generated by the second OSU tributary unit under the condition that the second service is received;
the ethernet switch is further configured to receive the second data packet, and send the second data packet to the first OSU tributary unit based on the DMAC in the second data packet and/or third control information from the processing unit.
7. A data transmission method based on OSU cross device is characterized in that the OSU cross device comprises: the system comprises a first OSU branch unit, N second OSU branch units and a main system, wherein N is an integer larger than 1, the first OSU branch unit is connected to a first end of the main system, and the N second OSU branch units are connected to a second end of the main system;
the method comprises the following steps:
the first OSU branch unit generates a first data packet corresponding to a first service under the condition of receiving the first service;
the first OSU tributary unit sends the first data packet to at least one first target unit in the N second OSU tributary units through the main system;
the main system comprises an Ethernet switch and a processing unit, wherein the processing unit is respectively connected to the Ethernet switch, the first OSU branch unit and the N second OSU branch units;
the processing unit is configured to configure the first OSU tributary unit to modify a target media access control layer DMAC in the first data packet into a source media access control layer SMAC of the first target unit;
the Ethernet switch is used for receiving the first data packet, and sending the first data packet to the first target unit based on the DMAC in the first data packet and/or the first control information from the processing unit;
the processing unit is further configured to modify the DMAC in the first data packet into a multicast SMAC if there are at least two first target units, where a multicast group corresponding to the multicast SMAC includes the first OSU tributary unit and the at least two first target units;
the ethernet switch is further configured to receive the first data packet, and send the first data packet to the at least two first target units based on the DMAC in the first data packet and/or the second control information from the processing unit.
8. The method of claim 7, wherein the generating, by the first OSU tributary unit, a first data packet corresponding to a first service when the first service is received comprises:
the first OSU branch unit generates a first OSU frame corresponding to the first service based on the first service under the condition that the first service is received;
the first OSU tributary unit converts the first OSU frame into a first data packet comprising a first ethernet frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211629741.7A CN115633279B (en) | 2022-12-19 | 2022-12-19 | OSU (open service Unit) cross equipment and data transmission method based on OSU cross equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211629741.7A CN115633279B (en) | 2022-12-19 | 2022-12-19 | OSU (open service Unit) cross equipment and data transmission method based on OSU cross equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115633279A CN115633279A (en) | 2023-01-20 |
| CN115633279B true CN115633279B (en) | 2023-04-07 |
Family
ID=84909726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211629741.7A Active CN115633279B (en) | 2022-12-19 | 2022-12-19 | OSU (open service Unit) cross equipment and data transmission method based on OSU cross equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115633279B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114286205A (en) * | 2020-09-27 | 2022-04-05 | 华为技术有限公司 | Data frame sending method and network equipment |
| CN114339488A (en) * | 2021-12-28 | 2022-04-12 | 北京格林威尔科技发展有限公司 | Ethernet service protection method and device in optical transmission network |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014139178A1 (en) * | 2013-03-15 | 2014-09-18 | 华为技术有限公司 | Service transfer device and method for optical channel data unit |
| US10454610B2 (en) * | 2017-11-13 | 2019-10-22 | Fujitsu Limited | 1+1 Ethernet fabric protection in a disaggregated optical transport network switching system |
| CN114727168A (en) * | 2021-01-04 | 2022-07-08 | 中国移动通信有限公司研究院 | Service processing device, method, optical line terminal and computer readable storage medium |
-
2022
- 2022-12-19 CN CN202211629741.7A patent/CN115633279B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114286205A (en) * | 2020-09-27 | 2022-04-05 | 华为技术有限公司 | Data frame sending method and network equipment |
| CN114339488A (en) * | 2021-12-28 | 2022-04-12 | 北京格林威尔科技发展有限公司 | Ethernet service protection method and device in optical transmission network |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115633279A (en) | 2023-01-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102342286B1 (en) | DCN message processing method, network device, and network system | |
| US8681805B2 (en) | Method, device and system for interconnecting a multi-protocol label switching network and an ethernet | |
| CA2459286C (en) | Method for supporting sdh/sonet aps on ethernet | |
| EP1816803B1 (en) | Transmission processing method for data frame and system thereof | |
| EP3255840A1 (en) | Label distribution method and device | |
| EP2667552B1 (en) | Method for service transmission over optical transport network, device and system for realizing same | |
| EP3208971B1 (en) | Method, device and system for reducing centralized protection switching time in potn system | |
| KR20150007623A (en) | Method and appratus for protection switching in packet transport system | |
| CN108737912B (en) | Message intercommunication method, POTN intercommunication module and POTN system | |
| US20150016473A1 (en) | Transmission apparatus, transmission system, and transmission method | |
| US9479439B1 (en) | Methods and apparatus for load balancing VLAN traffic | |
| EP2852115B1 (en) | Information processing method, apparatus and system in trill networks | |
| US9426058B2 (en) | Transmission equipment and transmission method | |
| JP5672836B2 (en) | COMMUNICATION DEVICE, COMMUNICATION METHOD, AND COMMUNICATION PROGRAM | |
| CN102255790A (en) | Method and system for informing congestion control information | |
| CN111385156B (en) | sFlow flow sampling method, device and system | |
| CN115633279B (en) | OSU (open service Unit) cross equipment and data transmission method based on OSU cross equipment | |
| WO2020207429A1 (en) | Message processing method and apparatus, and computer-readable storage medium | |
| JP2009218940A (en) | Transmission apparatus | |
| KR101442567B1 (en) | Seamless network communication method using frame based routing on the ring topology | |
| KR102015111B1 (en) | Apparatus and method of protection switching of packet in transport networks | |
| WO2023186141A1 (en) | Data packet forwarding method and apparatus, storage medium, and electronic device | |
| Janson | Metro and Carrier Class Networks: Carrier Ethernet and OTN | |
| JP2011142571A (en) | Frame transfer device, frame transfer system, and frame transfer method | |
| JP2006174287A (en) | Link control apparatus, high-order link control device, low-order link control device and communication system using the link control apparatus |
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 |