CN112532532B - Service returning method, device, equipment and readable storage medium - Google Patents
Service returning method, device, equipment and readable storage medium Download PDFInfo
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- CN112532532B CN112532532B CN202011278247.1A CN202011278247A CN112532532B CN 112532532 B CN112532532 B CN 112532532B CN 202011278247 A CN202011278247 A CN 202011278247A CN 112532532 B CN112532532 B CN 112532532B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/12—Avoiding congestion; Recovering from congestion
- H04L47/125—Avoiding congestion; Recovering from congestion by balancing the load, e.g. traffic engineering
Abstract
The invention provides a service returning method, a service returning device, service returning equipment and a readable storage medium. The method comprises the following steps: when the original line is restored, an ODUk channel of the original line is created, and the intersection from a branch disc single plate to the original line disc single plate is established; detecting whether an alarm exists in an original line ODUk channel and a working line ODUk channel or not; when detecting that the original line ODUk channel and the working line ODUk channel do not have alarms, deleting the intersection from the working line disk veneer to the branch line disk veneer, and simultaneously establishing the intersection from the original line disk veneer to the branch line disk veneer. By the invention, when the switching condition is met, the working circuit board single board and the original circuit board single board are synchronously switched and crossed, thereby ensuring that the service interruption time can meet the switching requirement of the carrier level in the service return scene.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a service return method, apparatus, device, and readable storage medium.
Background
The POTN equipment is a distributed cross management equipment, the network management and control plane ASON implement business add-delete and route switching control management by issuing business mapping configuration, cross configuration and other configurations to each single board of the equipment. The control plane ASON has an application scenario of rerouting return, and since it is service return, the service interruption time needs to meet the switching requirement of the carrier class, that is, the service interruption time is less than 50 MS.
In a site, rerouting return can be completed only when a single board where the current route is located and a single board where the return route is located complete cross switching, a single service return is issued from ASON to the two single boards simultaneously to be configured to single board receiving configuration and complete processing without blocking basically, the time difference of the two single boards in cross switching is not large, the route return time is short, and the equipment environment has certain probability to meet the time requirement under the condition of no other interference; when one port contains a plurality of services, the interruption of the optical fiber can cause the simultaneous switching of the plurality of services, the restoration of the optical fiber can simultaneously restore the plurality of services, the configuration quantity is large, the fluctuation range of the time difference between the receiving configuration of the current path single board and the receiving configuration of the original path single board to the switching cross is large, the rerouting restoration time is between dozens of milliseconds and several seconds, and the switching requirement of the telecommunication level can not be met.
Disclosure of Invention
The invention mainly aims to provide a service returning method, a service returning device, service returning equipment and a readable storage medium, and aims to solve the technical problem that in the prior art, service interruption duration cannot meet the switching requirement of a carrier level in a service returning scene.
In a first aspect, the present invention provides a service return method, where the service return method includes:
when the original line is restored, an ODUk channel of the original line is created, and the intersection from a branch disc single plate to the original line disc single plate is established;
detecting whether an alarm exists in an original line ODUk channel and a working line ODUk channel or not;
when it is detected that there is no alarm in both the original line ODUk channel and the working line ODUk channel, the intersection from the working line disc veneer to the branch disc veneer is deleted, and at the same time, the intersection from the original line disc veneer to the branch disc veneer is established.
Optionally, the step of detecting whether an alarm exists in the original line ODUk channel and the working line ODUk channel includes:
detecting whether an alarm exists in an ODUk channel of a working line based on first interaction information sent by a single plate of the working line disk, wherein the first interaction information comprises a channel index, a slot position address and a channel state of the ODUk channel of the working line;
whether an alarm exists in the original line ODUk channel is detected based on second interaction information sent by the original line disk single board, wherein the second interaction information comprises a channel index, a slot position address and a channel state of the original line ODUk channel.
Optionally, when the channel state is a normal state, it is determined that no alarm exists in the corresponding ODUk channel.
Optionally, the step of deleting the intersection from the working circuit board single board to the branch circuit board single board, and simultaneously, establishing the intersection from the original circuit board single board to the branch circuit board single board includes:
sending an establishing instruction to an original circuit board single board and sending a deleting instruction to a working circuit board single board;
the original circuit board veneer establishes the intersection from the original circuit board veneer to the branch circuit board veneer based on the establishing instruction, and meanwhile, the working circuit board veneer deletes the intersection from the working circuit board veneer to the branch circuit board veneer based on the deleting instruction.
Optionally, when it is detected that there is no alarm in the original line ODUk channel and the working line ODUk channel, deleting the intersection from the working line disk veneer to the tributary disk veneer, and after the step of establishing the intersection from the original line disk veneer to the tributary disk veneer, further includes:
and deleting the ODUk mapping and the cross configuration of the working line.
In a second aspect, the present invention further provides a service returning apparatus, where the service returning apparatus includes:
a creating module, configured to create an original line ODUk channel when an original line is restored, and establish a cross from a tributary disk single board to an original line disk single board;
the detection module is used for detecting whether an alarm exists in an original line ODUk channel and a working line ODUk channel;
and the synchronous processing module is configured to delete the intersection from the working line disk single plate to the branch disk single plate when detecting that there is no alarm in the original line ODUk channel or the working line ODUk channel, and establish the intersection from the original line disk single plate to the branch disk single plate.
In a third aspect, the present invention further provides a service return device, where the service return device includes a processor, a memory, and a service return program stored on the memory and executable by the processor, where the service return program, when executed by the processor, implements the steps of the service return method described above.
In a fourth aspect, the present invention further provides a readable storage medium, on which a service return program is stored, where the service return program, when executed by a processor, implements the steps of the service return method as described above.
In the invention, when an original line is restored, an ODUk channel of the original line is created, and the intersection from a branch disc single plate to the original line disc single plate is established; detecting whether an alarm exists in an original line ODUk channel and a working line ODUk channel or not; when it is detected that there is no alarm in both the original line ODUk channel and the working line ODUk channel, the intersection from the working line disc veneer to the branch disc veneer is deleted, and at the same time, the intersection from the original line disc veneer to the branch disc veneer is established. By the invention, when the switching condition is met, the working circuit board single board and the original circuit board single board are synchronously switched and crossed, thereby ensuring that the service interruption time can meet the switching requirement of the carrier level in the service return scene.
Drawings
Fig. 1 is a schematic hardware structure diagram of a service return device according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of an embodiment of a service returning method according to the present invention;
FIG. 3 is a schematic diagram of a service path of an original line interrupt in an embodiment;
fig. 4 is a schematic diagram illustrating a one-way intersection between a branch board veneer and an original path board veneer in one embodiment;
FIG. 5 is a diagram illustrating a scenario of synchronous handover interleaving in an embodiment;
FIG. 6 is a diagram illustrating the creation of a synchronization control unit in one embodiment;
FIG. 7 is a diagram illustrating an embodiment of a synchronous handoff crossover;
FIG. 8 is a diagram illustrating an embodiment of a delete synchronization control unit;
fig. 9 is a functional module diagram of an embodiment of a service returning apparatus according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In a first aspect, an embodiment of the present invention provides a service return device.
Referring to fig. 1, fig. 1 is a schematic diagram of a hardware structure of a service return device according to an embodiment of the present invention. In this embodiment of the present invention, the service return device may include a processor 1001 (e.g., a central processing unit, CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used for realizing connection communication among the components; the user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard); the network interface 1004 may optionally include a standard wired interface, a WIreless interface (e.g., a WI-FI interface, WI-FI interface); the memory 1005 may be a Random Access Memory (RAM) or a non-volatile memory (non-volatile memory), such as a magnetic disk memory, and optionally, the memory 1005 may also be a storage device independent of the processor 1001. Those skilled in the art will appreciate that the hardware configuration depicted in FIG. 1 is not intended to be limiting of the present invention, and may include more or less components than those shown, or some components in combination, or a different arrangement of components.
With continued reference to FIG. 1, the memory 1005 of FIG. 1, which is one type of computer storage medium, may include an operating system, a network communication module, a user interface module, and a service return program. The processor 1001 may call the service returning program stored in the memory 1005, and execute the service returning method provided in the embodiment of the present invention.
In a second aspect, an embodiment of the present invention provides a service return method.
Referring to fig. 2, fig. 2 is a flowchart illustrating a service returning method according to an embodiment of the present invention. As shown in fig. 2, in an embodiment, the service returning method includes:
step S10, when the original line is restored, creating an original line ODUk channel, and establishing intersection of a tributary disk single board to the original line disk single board;
in this embodiment, referring to fig. 3, fig. 3 is a schematic diagram of a service path of an original line interrupt in an embodiment. As shown in fig. 3, when the original line is interrupted, the line disk of the current line establishes a bidirectional intersection with the tributary disk to perform traffic transmission through the current line. When the original path is recovered, the control plane ASON detects that the original path is recovered, and at this time, service return is required. Firstly, an original line ODUk channel is created through configuration, and a branch disc single plate is established to be crossed to an original path line disc single plate in a one-way mode. Referring to fig. 4, fig. 4 is a schematic diagram illustrating a unidirectional cross from a branch disk board to an original path disk board in an embodiment.
Step S20, detecting whether an alarm exists in the original line ODUk channel and the working line ODUk channel;
in this embodiment, both the original line ODUk channel and the working line ODUk channel are used to carry a client service signal accessed by a transmission branch disk. The absence of an alarm in the original line ODUk channel and the working line ODUk channel is a precondition for performing synchronous switching cross processing, and therefore, it is necessary to detect whether an alarm exists in the original line ODUk channel and the working line ODUk channel.
Specifically, in an embodiment, the step S20 includes:
step S201, detecting whether an alarm exists in the working line ODUk channel based on first interaction information sent by the working line disc single board, where the first interaction information includes a channel index, a slot address, and a channel state of the working line ODUk channel;
in this embodiment, first interaction information sent by a single board of a working line disk is received, where the first interaction information includes a channel index, a slot address, and a channel state of an ODUk channel of the working line disk. After receiving the first interaction information, determining that a channel corresponding to the first interaction information is a working line ODUk channel according to a channel index and a slot address of the working line ODUk channel included in the first interaction information, and then determining whether an alarm exists in the working line ODUk channel according to a channel state.
Step S202, detecting whether an alarm exists in the original line ODUk channel based on second interaction information sent by the original line disk single board, where the second interaction information includes a channel index, a slot address, and a channel state of the original line ODUk channel.
In this embodiment, second interaction information sent by a single board of an operating line disk is received, where the second interaction information includes a channel index, a slot address, and a channel state of an original line ODUk channel. After receiving the second interaction information, first, according to a channel index and a slot address of the original line ODUk channel included in the second interaction information, determining that a channel corresponding to the second interaction information is the original line ODUk channel, and then, according to a channel state, determining whether an alarm exists in the original line ODUk channel.
Further, in an embodiment, when the channel state is a normal state, it is determined that no alarm exists in the corresponding ODUk channel.
In this embodiment, different channel states may be identified by different identifiers, for example, identifier 1 indicates that the channel is in a normal state, identifier 2 indicates that the channel is in a disconnected state, identifier 3 indicates that the channel is in a congested state, and so on. And when the channel state is the identifier 1, determining that no alarm exists in the corresponding ODUk channel, otherwise, determining that no alarm exists in the corresponding ODUk channel. For example, when the channel state in the first interaction information is identifier 1, it is determined that no alarm exists in the working line ODUk channel; similarly, when the channel state in the second interaction information is identifier 1, it is determined that no alarm exists on the original line ODUk channel.
Step S30, when it is detected that there is no alarm in both the original line ODUk channel and the working line ODUk channel, delete the intersection from the working line disc veneer to the branch disc veneer, and at the same time, establish the intersection from the original line disc veneer to the branch disc veneer.
In this embodiment, when it is detected that there is no alarm in both the original line ODUk channel and the working line ODUk channel, it is determined that the cross-over condition is currently satisfied, the cross from the working line disc veneer to the branch disc veneer is deleted, and meanwhile, the cross from the original line disc veneer to the branch disc veneer is established, that is, the working line disc veneer and the original line disc veneer are synchronously switched and crossed.
Further, in an embodiment, the step of deleting the intersection from the working circuit board single board to the branch circuit board single board, and meanwhile, establishing the intersection from the original circuit board single board to the branch circuit board single board includes:
sending an establishing instruction to an original circuit board single board and sending a deleting instruction to a working circuit board single board; the original circuit board veneer establishes the intersection from the original circuit board veneer to the branch circuit board veneer based on the establishing instruction, and meanwhile, the working circuit board veneer deletes the intersection from the working circuit board veneer to the branch circuit board veneer based on the deleting instruction.
In this embodiment, in order to ensure that the working circuit board veneer and the original circuit board veneer can be switched and crossed synchronously, a delete instruction is sent to the working circuit board veneer while an establishment instruction is sent to the original circuit board veneer, so that the original circuit board veneer establishes the crossing from the original circuit board veneer to the branch circuit board veneer based on the establishment instruction, and meanwhile, the working circuit board veneer deletes the crossing from the working circuit board veneer to the branch circuit board veneer based on the delete instruction.
It is easy to understand that when there are multiple services that need to be returned, each service is processed identically according to the above method, and multiple services can be returned at the same time within a certain time period, so that the time length required for multiple services to be returned at the same time can meet the carrier level switching requirement.
Further, in an embodiment, after step S30, the method further includes:
and deleting the ODUk mapping and the cross configuration of the working line.
In this embodiment, after the working line disk single board and the original line disk single board are switched and crossed synchronously, the ODUk mapping and the cross configuration of the working line are deleted, and the service return flow is ended.
In this embodiment, when an original line is restored, an original line ODUk channel is created, and a cross from a tributary disk single board to an original line disk single board is established; detecting whether an alarm exists in an original line ODUk channel and a working line ODUk channel or not; when detecting that the original line ODUk channel and the working line ODUk channel do not have alarms, deleting the intersection from the working line disk veneer to the branch line disk veneer, and simultaneously establishing the intersection from the original line disk veneer to the branch line disk veneer. By the embodiment, when the switching condition is met, the working circuit board veneer and the original circuit board veneer are synchronously switched and crossed, so that the service interruption time can meet the carrier switching requirement in the service return scene.
Referring to fig. 5, fig. 5 is a schematic diagram illustrating a synchronous switching crossover in an embodiment. As shown in fig. 5, the original line board and the working line board include CPUs and FPGAs, and are connected to the synchronous control unit on the main control board CCU through a backplane ethernet. CPUs on an original circuit board and a working circuit board access the FPGA through localbus or PCIE, one interrupt pin accesses the FPGA, the FPGA is connected to a back board through Ethernet, and a CCU synchronous control unit of a master control board accesses the back board through the Ethernet. And finally realizing the simultaneous switching of service intersection between the original line disk and the working line disk to the branch disk through a synchronization mechanism, and realizing that the service return interruption time is less than 50 ms. The method comprises the following specific steps:
and the original line is recovered to be normal, and the control plane ASON detects that the original line is recovered and needs to return. Firstly, an original line ODUk channel is created through configuration, and a branch disc is established to be crossed to the original line disc in a unidirectional manner, as shown in fig. 4, at this time, the original line ODUk channel has no channel alarm.
After the ASON completes the configuration issue, a synchronous cross control system object starts to be deployed, a station a (the station a is a transmission device including single boards such as a master control disk, an original working line disk and a tributary disk, the tributary disk and the line disk are service single boards accessing a transmission service, the master control disk is a control single board managing the control single board to realize service access transmission, and a control plane ASON control unit on the master control disk generates and issues configuration to each single board) deploys an ODUk channel of the original line disk as a return channel R, the return channel R is indexed as ODUk-M, the working line ODUk channel is a working channel W, the channel index is ODUk-N, the synchronous control unit includes ODUk-N, ODUk-M and a slot address thereof, and issues to the original working line disk and the master control disk by configuration, and the station B is configured in the same way; the original and working circuit disks receive the configuration, then synchronous cross nodes are respectively established on a CPU by ODUk-M, ODUk-N, an FPGA is configured, the alarm information of an ODUk channel is written into the FPGA in a polling mode, and the FPGA sends the alarm information corresponding to the ODUk-M, ODUk-N to a master control disk through a backboard Ethernet; as shown in fig. 6, the master control disk receives the configuration of the synchronization control unit, and continuously monitors the ODUk-M, ODUk-N channel alarm information, where fig. 6 is a schematic diagram of creating the synchronization control unit in an embodiment.
If the synchronous control unit detects that none of the ODUk-M, ODUk-N channels is alarmed, it initiates a cross-over switching instruction to the original and working circuit boards through the backplane ethernet packet, the FPGAs of the original circuit board and the working circuit board receive the instruction, store the instruction through the register, trigger the CPU soft interrupt, the CPU reads out the switching instruction, delete the circuit-to-branch cross or establish the circuit-to-branch cross, and complete the cross-over synchronous switching, as shown in fig. 7, fig. 7 is a schematic diagram of synchronous switching cross in an embodiment.
As shown in fig. 8, fig. 8 is a schematic diagram of deleting a synchronization control unit in an embodiment, where the synchronization control unit initiates a switching instruction and then feeds back ASON to complete switching, and the ASON monitors an a/B station to complete cross switching, deletes a synchronization cross control system object, deletes mapping and cross configuration of an ODUk of a current line, and ends a service return flow.
The line ODUk index coding disc is unique, the coding value is in the range of ODUk entries supported by the line disc, and the FPGA stores ODUk index switching instructions respectively and supports multiple entries of ODUk to be returned simultaneously. The FPGA has a plurality of register groups, software on the circuit board and synchronous control unit software on the main control board can simultaneously process information interaction of a plurality of services, the processing is independent and not interfered, the software processing layer has a certain sequence, and a plurality of services can be simultaneously returned within a certain time period.
In a third aspect, an embodiment of the present invention further provides a service returning apparatus.
Referring to fig. 9, fig. 9 is a functional module schematic diagram of an embodiment of a service returning apparatus according to the present invention.
In one embodiment, the service returning device includes:
a creating module 10, configured to create an original line ODUk channel when an original line is restored, and establish a cross from a tributary disk single board to an original line disk single board;
a detection module 20, configured to detect whether an alarm exists in an original line ODUk channel and a working line ODUk channel;
the synchronous processing module 30 is configured to, when it is detected that neither the original line ODUk channel nor the working line ODUk channel has an alarm, delete the intersection from the working line disk veneer to the branch line disk veneer, and establish the intersection from the original line disk veneer to the branch line disk veneer.
Further, in an embodiment, the detecting module 20 is specifically configured to:
detecting whether an alarm exists in an ODUk channel of a working line based on first interaction information sent by a single plate of the working line disk, wherein the first interaction information comprises a channel index, a slot position address and a channel state of the ODUk channel of the working line;
detecting whether an alarm exists in an original line ODUk channel based on second interaction information sent by an original line disk single board, wherein the second interaction information comprises a channel index, a slot address and a channel state of the original line ODUk channel
Further, in an embodiment, when the channel state is a normal state, it is determined that no alarm exists in the corresponding ODUk channel.
Further, in an embodiment, the synchronization processing module 30 is specifically configured to:
sending an establishing instruction to an original circuit board single board and sending a deleting instruction to a working circuit board single board;
the original circuit board veneer establishes the intersection from the original circuit board veneer to the branch circuit board veneer based on the establishing instruction, and meanwhile, the working circuit board veneer deletes the intersection from the working circuit board veneer to the branch circuit board veneer based on the deleting instruction.
Further, in an embodiment, the service returning apparatus further includes a deleting module, configured to:
and deleting the ODUk mapping and the cross configuration of the working line.
The function implementation of each module in the service returning device corresponds to each step in the service returning method embodiment, and the function and implementation process are not described in detail here.
In a fourth aspect, the embodiment of the present invention further provides a readable storage medium.
The readable storage medium of the present invention stores a service return program, wherein the service return program, when executed by a processor, implements the steps of the service return method as described above.
The method implemented when the service returning program is executed may refer to each embodiment of the service returning method of the present invention, and details are not described here.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention or the portions contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) as described above and includes several instructions for causing a terminal device to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A service return method is characterized in that the service return method comprises the following steps:
when the original line is restored, an ODUk channel of the original line is created, and the intersection from a branch disc single plate to the original line disc single plate is established;
detecting whether an alarm exists in an original line ODUk channel and a working line ODUk channel or not;
the step of detecting whether an alarm exists in the original line ODUk channel and the working line ODUk channel includes:
detecting whether an alarm exists in an ODUk channel of a working line based on first interaction information sent by a single plate of the working line disk, wherein the first interaction information comprises a channel index, a slot position address and a channel state of the ODUk channel of the working line;
detecting whether an alarm exists in an original line ODUk channel or not based on second interaction information sent by an original line disk single board, wherein the second interaction information comprises a channel index, a slot position address and a channel state of the original line ODUk channel;
when it is detected that there is no alarm in both the original line ODUk channel and the working line ODUk channel, the intersection from the working line disc veneer to the branch disc veneer is deleted, and at the same time, the intersection from the original line disc veneer to the branch disc veneer is established.
2. The service return method according to claim 1, wherein when the channel state is a normal state, it is determined that no alarm exists in the corresponding ODUk channel.
3. The service returning method according to claim 2, wherein the step of deleting the intersection from the working line disk single board to the tributary disk single board and establishing the intersection from the original line disk single board to the tributary disk single board includes:
sending an establishing instruction to an original circuit board single board and sending a deleting instruction to a working circuit board single board;
the original circuit board veneer establishes the intersection from the original circuit board veneer to the branch circuit board veneer based on the establishing instruction, and meanwhile, the working circuit board veneer deletes the intersection from the working circuit board veneer to the branch circuit board veneer based on the deleting instruction.
4. The service return method according to claim 1, wherein when it is detected that neither the original line ODUk channel nor the working line ODUk channel has an alarm, the method further includes, after the step of deleting a cross from the working line disk single board to the tributary disk single board and establishing a cross from the original line disk single board to the tributary disk single board:
and deleting the ODUk mapping and the cross configuration of the working line.
5. A service return apparatus, characterized in that the service return apparatus comprises:
a creating module, configured to create an original line ODUk channel when an original line is restored, and establish a cross from a tributary disk single board to an original line disk single board;
the detection module is used for detecting whether an alarm exists in an original line ODUk channel and a working line ODUk channel;
the detection module is specifically configured to:
detecting whether an alarm exists in an ODUk channel of a working line based on first interaction information sent by a single plate of the working line disk, wherein the first interaction information comprises a channel index, a slot position address and a channel state of the ODUk channel of the working line;
detecting whether an alarm exists in an original line ODUk channel or not based on second interaction information sent by an original line disk single board, wherein the second interaction information comprises a channel index, a slot position address and a channel state of the original line ODUk channel;
and the synchronous processing module is configured to delete the intersection from the working line disk single plate to the branch disk single plate when detecting that there is no alarm in the original line ODUk channel or the working line ODUk channel, and establish the intersection from the original line disk single plate to the branch disk single plate.
6. The service return apparatus according to claim 5, wherein when the channel state is a normal state, it is determined that there is no alarm in the corresponding ODUk channel.
7. A service return apparatus comprising a processor, a memory, and a service return program stored on the memory and executable by the processor, wherein the service return program, when executed by the processor, implements the steps of the service return method of any of claims 1 to 4.
8. A readable storage medium, characterized in that the readable storage medium has a service return program stored thereon, wherein the service return program, when executed by a processor, implements the steps of the service return method according to any one of claims 1 to 4.
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