CN112448755A - Method, device and equipment for realizing optical channel 1+1 protection - Google Patents
Method, device and equipment for realizing optical channel 1+1 protection Download PDFInfo
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Abstract
An implementation method, an apparatus, a device and a computer-readable storage medium for optical channel 1+1 protection, wherein the method comprises: acquiring path fault information; determining a switching type according to the path fault information; and executing protection switching according to the switching type and the path fault information. In the embodiment of the invention, the switching type is determined according to the path fault information, and the switching type is flexibly switched according to the actual situation, so that the inherent defect that APS signaling cannot be transmitted in the optical channel 1+1 bidirectional switching can be avoided, and the probability of recovering services through protection switching is increased under a plurality of failure conditions.
Description
Technical Field
This document relates to, but is not limited to, a method, apparatus, device, and computer-readable storage medium for implementing optical channel 1+1 protection.
Background
An OTN (Optical Transport Network) system can select unidirectional or bidirectional switching during bidirectional transmission. When unidirectional switching is performed, the selectors at each end are completely independent. When bidirectional switching is performed, two ends are tried to be coordinated, so that even if a unidirectional failure occurs, the bridging of the two ends and the setting of the selector are the same. Bidirectional switching always requires an APS (Automatic protection Switch) channel to carry APS signaling to coordinate the two endpoints. Unidirectional switching can protect two unidirectional failures in opposite directions in different entities.
As shown in fig. 1, each node in an Optical Channel 1+1 Protection configures an OTU (Optical transport Unit) service board, and APS signaling is transmitted by using APS/PCC (Protection Communication Channel) overhead bytes of the OTU service board when configured as a bidirectional switching type, where an inherent defect exists in the Protection architecture, as shown in fig. 2: when a protection path failure occurs in one end network element a, an APS signaling with a failed local protection resource is transmitted to an opposite end network element B, and both network elements are in a working state. At this time, if the protection path of the network element a is recovered and the transmitted APS signaling cannot be transmitted to the opposite end, the network element a is in the switching state, the network element B fails in the working path, and the protection path is in the working state under the normal scene, and the service is interrupted.
The inherent drawbacks in the above optical channel 1+1 protection are solved by either limiting the configuration of bidirectional switching, allowing only unidirectional switching, or adding an out-of-band channel dedicated to the transfer of APS signaling. Although the above situation can be avoided by configuring unidirectional switching, it is not suitable to restrict the configuration to unidirectional switching in a scenario where the delay requirements for two directions are high, such as when one transport entity in a transoceanic link passes through a satellite and the other passes through an optical cable link. The above-mentioned drawbacks can also be avoided theoretically by adding an out-of-band channel to specially transfer APS signaling, but adding an out-of-band channel will increase the cost on the one hand and also increase the probability of protection switching failure on the other hand.
Disclosure of Invention
The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.
The embodiment of the invention provides a method, a device, equipment and a computer readable storage medium for realizing optical channel 1+1 protection, which are used for avoiding the inherent defects in the optical channel 1+1 protection.
The embodiment of the invention provides a method for realizing optical channel 1+1 protection, which comprises the following steps:
acquiring path fault information;
determining a switching type according to the path fault information;
and executing protection switching according to the switching type and the path fault information.
The embodiment of the present invention further provides an apparatus for implementing optical channel 1+1 protection, including:
an acquisition unit configured to acquire path failure information;
a switching type automatic change decision control unit, configured to determine a switching type according to the path fault information;
and the protection switching control unit is used for executing protection switching according to the switching type and the path fault information.
An embodiment of the present invention further provides an apparatus for implementing optical channel 1+1 protection, including: the optical channel 1+1 protection device comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the processor executes the program to realize the realization method of the optical channel 1+1 protection.
The embodiment of the invention also provides a computer-readable storage medium, which stores computer-executable instructions, wherein the computer-executable instructions are used for executing the implementation method of the optical channel 1+1 protection.
The embodiment of the invention comprises the following steps: acquiring path fault information; determining a switching type according to the path fault information; and executing protection switching according to the switching type and the path fault information. In the embodiment of the invention, the switching type is determined according to the path fault information, and the switching type is flexibly switched according to the actual situation, so that the inherent defect that APS signaling cannot be transmitted in the optical channel 1+1 bidirectional switching can be avoided, and the probability of recovering services through protection switching is increased under a plurality of failure conditions.
Other aspects will be apparent upon reading and understanding the attached drawings and detailed description.
Drawings
FIG. 1 is a schematic diagram of a protection structure of an optical channel 1+ 1;
fig. 2 is a schematic diagram of a scene of an inherent defect of bidirectional switching in optical channel 1+1 protection;
FIG. 3 is a flow chart of a method for implementing optical channel 1+1 protection according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an apparatus for implementing optical channel 1+1 protection according to an embodiment of the present invention;
fig. 5 is a schematic processing flow diagram of an apparatus for implementing optical channel 1+1 protection according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of one-end working path failure in application example 1;
FIG. 7 is a schematic diagram of a two-end working path failure in application example 2;
FIG. 8 is a schematic diagram of a one-end protection path failure in application example 3;
FIG. 9 is a schematic diagram of a two-terminal protection path failure in application example 4;
FIG. 10 is a schematic diagram of application example 5 before one end of a working fault and the other end of a protection fault are modified;
FIG. 11 is a schematic diagram of application example 5 after one end of working fault and the other end of protection fault are modified;
FIG. 12 is a schematic diagram of application example 6 after a bidirectional working fault at one end and a protection fault at the other end;
fig. 13 is a schematic diagram after one end of working fault and the other end of bidirectional protection fault in application example 7.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.
As shown in fig. 3, the method for implementing optical channel 1+1 protection according to the embodiment of the present invention includes the following steps:
The path failure information includes at least one of local path failure information and far-end path failure information.
In this step, the path fault information may be obtained by detecting a local fault request and an APS signaling sent by a remote network element.
The local fault request may include a fault request automatically reported due to a local path fault, and may also include an external command issued locally and manually.
And step 102, determining a switching type according to the path fault information.
The switching type may be bidirectional switching or unidirectional switching.
In an embodiment, when the path failure information is single-ended, that is, only local path failure information exists or only far-end path failure information exists, it is determined that the switching type is bidirectional switching.
In an embodiment, when the path failure information is double-ended and there exists local path failure information and far-end path failure information at the same time, the switching type is determined according to the priority of the failure information.
And when the priority of the local path fault information is greater than or equal to the priority of the far-end path fault information, determining that the switching type is bidirectional switching.
And when the priority of the local path fault information is smaller than that of the far-end path fault information, determining that the switching type is unidirectional switching.
The following describes a decision case of bidirectional switching or unidirectional switching.
1. Bidirectional switching:
in this step, the situation of determining that the bidirectional switching is performed may have three types:
(1) only local path failure information exists;
(2) only far-end path failure information exists;
(3) and simultaneously, local path fault information and far-end path fault information exist, and the priority of the local path fault information is greater than or equal to that of the far-end path fault information.
The determination of the priority level may be according to the rules in ITU-T873.1, for example, the priority level of the protection resource failure is higher than the priority level of the working resource failure, and when the local path failure information is the protection resource failure and the remote path failure information is the working resource failure, the priority level of the local path failure information is higher than the priority level of the remote path failure information.
2. Unidirectional switching
The case of determining unidirectional switching may be one, that is:
the local path fault information and the far-end path fault information exist at the same time, and the priority of the local path fault information is smaller than that of the far-end path fault information.
When the path failure information changes, the switching type also changes correspondingly.
After the switching type and the path failure information are determined, the protection switching can be executed accordingly according to the existing rules, for example, when a working path failure occurs at one end network element. Both sides execute bidirectional switching, and the network elements at both ends are switched to the protection path at the same time.
In the embodiment of the invention, the switching type is determined according to the path fault information, and the switching type is flexibly switched according to the actual situation, so that the inherent defect that APS signaling cannot be transmitted in the optical channel 1+1 bidirectional switching can be avoided, and the probability of recovering services through protection switching is increased under a plurality of failure conditions. Moreover, the bidirectional switching can be realized in all scenes with uninterrupted service during the bidirectional switching.
As shown in fig. 4, the apparatus for implementing optical channel 1+1 protection according to the embodiment of the present invention includes:
an acquisition unit 21 configured to acquire path failure information;
a switching type automatic change decision control unit 22, configured to determine a switching type according to the path fault information;
and a protection switching control unit 23, configured to execute protection switching according to the switching type and the path failure information.
In an embodiment, the path failure information includes at least one of local path failure information and far-end path failure information.
In an embodiment, the obtaining unit 21 includes a local request detecting unit 211 and a remote signaling detecting unit 212, where the local request detecting unit 211 is configured to detect a local failure request, and the remote signaling detecting unit 212 is configured to detect an APS signaling sent by a remote network element.
And acquiring the path fault information by detecting a local fault request and an Automatic Protection Switching (APS) signaling sent by a remote network element.
In an embodiment, the switching type automatic change decision control unit 22 is configured to:
and when only the local path fault information exists, determining that the switching type is bidirectional switching.
In an embodiment, the switching type automatic change decision control unit 22 is configured to:
and when only the far-end path fault information exists, determining that the switching type is bidirectional switching.
In an embodiment, the switching type automatic change decision control unit 22 is configured to:
and when the local path fault information and the far-end path fault information exist at the same time, determining the switching type according to the priority of the fault information.
In an embodiment, the switching type automatic change decision control unit 22 is configured to:
and when the priority of the local path fault information is greater than or equal to the priority of the far-end path fault information, determining that the switching type is bidirectional switching.
In an embodiment, the switching type automatic change decision control unit 22 is configured to:
and when the priority of the local path fault information is smaller than that of the far-end path fault information, determining that the switching type is unidirectional switching.
The following description will be made with reference to an embodiment. The switching type automatic change decision control unit 22 is simply referred to as a switching type control unit, and the protection switching control unit 23 is simply referred to as a protection control unit.
The local request detection unit detects a local request (a local path fault request and a local manually issued external command), and reports a message to the switching type control unit when the local request changes. The remote signaling detection unit detects the APS signaling sent by the remote network element and reports the APS signaling to the switching type control unit. After synthesizing the messages sent by the local request detection unit and the remote signaling detection unit, the switching type change automatic control unit makes a decision and outputs the finally judged switching type to the protection control unit, and the protection control unit performs protection switching processing according to the decision result, and the steps are as follows:
1 after receiving the messages reported by the local request unit and the remote signaling detection unit, the switching type control unit of the device outputs a bidirectional switching instruction through comprehensive judgment decision, and informs the protection control unit to execute the bidirectional switching, and the steps are as follows:
1.1 the local request detecting unit detects the local alarm generation, reports the switching type control unit, the switching type control unit receives the local request reported by the local request detecting unit, and then judges the priority of the current local alarm and the far-end signaling, if the priority of the local alarm is higher than or equal to the priority of the far-end signaling, the switching type is decided as 'bidirectional switching', and informs the protection control unit.
1.2 the remote signaling detecting unit detects the APS signaling report switching type control unit sent by the opposite terminal network element, after receiving the APS signaling report switching type control unit, the switching type control unit performs priority judgment on the current local alarm and the remote signaling, if the priority of the local alarm is still higher than that of the remote signaling, the switching type judgment is maintained as "bidirectional switching", and notifies the protection control unit.
1.3 after the protection control unit receives the final decision result of the switching type sent by the switching type control unit, the bidirectional protection switching processing is executed by combining the current local alarm and the far-end signaling.
2 after receiving the messages reported by the local request unit and the far-end signaling detection unit, the switching type control unit of the device outputs a command for degrading into "one-way switching" through comprehensive decision, and informs the protection control unit to execute the protection switching process of "one-way switching", including the following steps:
2.1 the local request detecting unit detects the local alarm generation, reports the switching type control unit, the switching type control unit receives the local request reported by the local request detecting unit, and then judges the priority of the current local alarm and the far-end signaling, if the priority of the local alarm is lower than that of the far-end signaling, then decides to downgrade the switching type to 'one-way switching', and informs the protection control unit.
2.2 the remote signaling detecting unit detects the APS signaling report switching type control unit sent by the opposite terminal network element, after receiving the APS signaling report switching type control unit, the switching type control unit performs priority judgment on the current local alarm and the remote signaling, if the priority of the local alarm is still lower than that of the remote signaling, the switching type judgment is maintained as 'one-way switching', and notifies the protection control unit.
And 2.3, after receiving the switching type final decision result sent by the switching type control unit, the protection control unit executes unidirectional protection switching processing by combining the current local alarm and the far-end signaling.
After receiving the message of local request disappearance or far-end signaling disappearance reported by the local request unit and the far-end signaling detection unit, the switching type control unit of the device finally decides to output a step-up-back bidirectional switching instruction through comprehensive judgment and informs the protection control unit to execute the protection switching processing of bidirectional switching, and the steps are as follows:
3.1 the local request detecting unit detects that the local alarm disappears and reports to the switching type control unit, after the switching type control unit receives the local request reported by the local request detecting unit, the switching type control unit judges the priority of the current local request and the far-end signaling, at this time, only the far-end signaling exists, the switching type is judged to be upgraded to the bidirectional switching, and the protection control unit is informed.
3.2 the remote signaling detecting unit detects the APS signaling report switching type control unit sent by the opposite terminal network element, after receiving the APS signaling report switching type control unit, the switching type control unit judges the priority of the current local request and the remote signaling, if the priority of the local request is higher than the priority of the remote signaling, or if only the remote signaling exists and the local request does not exist, the switching type is judged to be upgraded to the bidirectional switching, and the protection control unit is notified.
3.3 after the protection control unit receives the final decision result of the switching type sent by the switching type control unit, the bidirectional protection switching processing is executed by combining the current local alarm and the far-end signaling.
Referring to fig. 5, the processing procedure of this embodiment can be simplified as follows:
Compared with the previous processing mode, in the bidirectional switching mode, the processing mode of the embodiment of the invention can display the local request only when the priority of the local request is equal to or higher than any request received from a far end through an APS channel. Compared with the related art, the method has the following main improvements:
1. the embodiment of the invention can avoid the inherent defect that APS signaling can not be transmitted in the aforementioned bidirectional switching of the optical channel 1+ 1;
2. under a plurality of failure conditions, according to the processing principle of the embodiment of the invention, the probability of recovering the service through protection switching is increased;
3. the bidirectional switching can be realized in all scenes with uninterrupted service during the bidirectional switching.
This is illustrated below by means of several application examples. The first four application examples (application example 1-application example 4) are used to describe a processing scenario in which, after the technology of the embodiment of the present invention is used, the switching type control unit finally makes a decision according to messages reported by the local request detection unit and the remote signaling detection unit and notifies the protection control unit to maintain "bidirectional switching". The last three application examples (application example 5-application example 7) are used to describe that after the technology of the embodiment of the present invention is adopted, the switching type control unit finally decides and notifies the protection control unit to downgrade to the "unidirectional switching" processing according to the messages reported by the local request detection unit and the remote signaling detection unit, and after the local request or the remote signaling disappears, the switching type control unit finally decides and notifies the protection control unit to upgrade back to the "bidirectional switching" processing scenario.
Application example 1, one-end network element working path failure
As shown in fig. 6, when the working path of the network element a at one end fails, the local request detecting unit on the network element a notifies the switching type controlling unit, after receiving the local request, the switching type controlling unit finally makes a decision and notifies the protection controlling unit to adopt the bidirectional switching process, the protection controlling unit performs protection switching according to the bidirectional switching process and sends an APS signaling to the network element B at the opposite end, the network element B performs processing after receiving the APS signaling, the switching process also occurs, and finally the network elements at both ends complete the bidirectional switching process.
Application example 2, two-end network element working path failure
As shown in fig. 7, when the network elements at both ends simultaneously have a working path failure, if the time of the working alarm received by the network element at one end is earlier than that at the other end, the processing mode is the same as that of application example 1, and both ends are in the switching state, thereby completing the bidirectional switching.
If the alarms at the two ends are generated simultaneously, when the local request detection units of the network elements at the two ends detect the external request of the local work alarm, the switching type control unit of the network element is informed, after the switching type control unit receives the local request, the final decision is made and the protection control unit is informed to adopt the bidirectional switching processing, the protection control unit generates the protection switching according to the bidirectional switching, and finally the network elements at the two ends complete the bidirectional switching processing.
Application example 3, one-end network element protection path failure
As shown in fig. 8, when the protection path of the network element a at one end fails, the local request detection unit detects that the protection path is alarmed to notify the switching type control unit, and after the switching type control unit receives the local request, it finally makes a decision and notifies the protection control unit to adopt the "bidirectional switching" process. The protection control unit carries out protection protocol operation according to 'bidirectional switching', is in a working state, and sends an APS signaling with a failure remote protection path to an opposite terminal network element B, the opposite terminal network element B carries out protection protocol calculation after receiving the APS signaling, and is also in the working state, and the switching states of the two terminals are consistent.
Application example 4, two-terminal network element protection path failure
As shown in fig. 9, when the protection paths of the network elements at both ends fail, if the time when the network element at one end receives the protection path alarm is earlier than that at the other end, the processing mode is the same as that of application example 3, and the network elements at both ends are in a working state.
If the network elements at two ends receive the local protection path fault at the same time, the local request detection units at two ends detect that the protection alarms inform the switching type control unit, after the switching type control unit receives the local request, the switching type control unit finally makes a decision and informs the protection control unit to adopt the bidirectional switching processing, the protection control unit carries out protection protocol operation according to the bidirectional switching, is in a working state and sends an APS signaling that the remote protection path fails to the network element at the opposite end, and the network element at the opposite end carries out protection protocol calculation after receiving the APS signaling and is also in the working state, and the switching states at two ends are consistent.
Application example 5, one end of the network element is in one-way working path failure, and the other end of the network element is in protection path failure
Fig. 10 is a process in the related art: when the working path fault occurs at one end of the network element A, the network elements at the two ends are switched and in a switching state, and the network element B at the other end generates the protection path fault again, so that the network elements at the two ends return to work and are in a working state. At this time, the traffic from A to B is on, and the traffic from B to A is off. And then, if the protection path of the network element at the B end is recovered, the network element at the B end is switched and is in a switching state, the network element at the A end still is in a working state because the network element at the A end cannot receive the APS signaling sent by the network element at the B end, the switching states at the two ends are inconsistent, and the service sent to the A by the B end is still in an interruption state. And the service can not be recovered until the working path of the A-end network element is recovered due to failure.
FIG. 11 is a process flow for using an embodiment of the invention: when a working path failure occurs in the network element a at one end, the local request detection unit on the network element a notifies the switching type control unit, after receiving the local request, the switching type control unit makes a decision and notifies the protection control unit to adopt the bidirectional switching processing, the protection control unit performs protection switching according to the bidirectional switching and sends an APS signaling to the opposite end, and the network element at the other end performs processing after receiving the APS signaling and also performs switching and is in a switching state.
When the network element B at the other end generates a protection path fault again, the local request unit on the network element B informs the switching type control unit after detecting the alarm, the switching type control unit synthesizes the local request and the far-end signaling, and because the protection path fault priority of the network element B is higher than the working path fault of the network element A, the switching type control unit on the network element B makes a decision and informs the protection control unit to maintain the bidirectional switching processing, and the protection path is returned to the working path and is in the working state. The network element A synthesizes the local request and the far-end signaling, and because the priority of the working path fault of the network element A is lower than that of the working path fault of the network element B, the switching type control unit on the network element A decides and informs the protection control unit to degrade into unidirectional switching processing, only the local working path fault is processed, the working path is not returned, and the working path is still in the switching state. Because the network element A does not respond to the signaling sent by the opposite end according to the unidirectional switching processing, even if the network element B does not respond to the signaling sent by the opposite end according to the bidirectional processing, the actually achieved effect is consistent with the unidirectional switching. At this time, the service A is communicated to the service B, the service B is also communicated to the service A, and no service interruption occurs.
And then, if the B-end network element protection path is recovered, the B-end network element local request detection unit informs the switching type control unit, and the switching type control unit synthesizes the local request and the far-end signaling final decision and informs the protection control unit to maintain the bidirectional switching processing. When the A-end network element detects that the B-end network element has no fault, the two-way switching is upgraded. The network element at the B end is switched to the protection path, and the switching states of the network elements at the two ends are consistent. And the working path of the A-end network element is recovered in a fault mode, and the two end network elements return to the working path together after waiting for the WTR time. Wherein, WTR is the time of waiting for return, when the working path is failed, the protection group is switched to the protection path, when the failure of the working path disappears, the protection group will wait for the time of WTR, and then automatically return to the working path, thus preventing the working path from being unstable.
Application example 6, one end network element bidirectional working path fault, the other end network element protection path fault
FIG. 12 is a process flow for using an embodiment of the invention: when a bidirectional working path failure occurs in a network element A at one end, a local request detection unit on the network element A informs a switching type control unit, after receiving a local request, the switching type control unit makes a decision and informs a protection control unit to adopt bidirectional switching processing, and the protection control unit performs protection switching according to the bidirectional switching and sends an APS signaling to an opposite end. Because the bidirectional working path fails, the network element B will perform the same processing as the network element a, and the network elements at both ends will be subjected to protection switching and are in a switching state.
When the network element B at the other end generates a protection path fault again, the local request unit on the network element B informs the switching type control unit after detecting the alarm, the switching type control unit synthesizes the local request and the far-end signaling, and because the protection path fault priority of the network element B is higher than the working path fault of the network element A, the switching type control unit on the network element B makes a decision and informs the protection control unit to maintain the bidirectional switching processing, and the protection path is returned to the working path and is in the working state. The network element A synthesizes the local request and the far-end signaling, and because the priority of the working path fault of the network element A is lower than that of the working path fault of the network element B, the switching type control unit on the network element A decides and informs the protection control unit to degrade into unidirectional switching processing, only the local working path fault is processed, the working path is not returned, and the working path is still in the switching state. At this time, the service from A to B is interrupted, and the service from B to A is switched on.
And then, if the B-end network element protection path is recovered, the B-end network element local request detection unit informs the switching type control unit, and the switching type control unit synthesizes the local request and the far-end signaling final decision and informs the protection control unit to maintain the bidirectional switching processing. When the A-end network element detects that the B-end network element has no fault, the two-way switching is upgraded. The network element at the B end is switched to the protection path, and the switching states of the network elements at the two ends are consistent. And the working path of the A-end network element is recovered in a fault mode, and the two end network elements return to the working path together after waiting for the WTR time.
Application example 7, one end of the network element working path fails, and the other end of the network element bidirectional protection path fails
FIG. 13 is a process flow for using an embodiment of the invention: when a working path failure occurs in the network element a at one end, the local request detection unit on the network element a notifies the switching type control unit, after receiving the local request, the switching type control unit makes a decision and notifies the protection control unit to adopt the bidirectional switching processing, the protection control unit performs protection switching according to the bidirectional switching and sends an APS signaling to the opposite end, and the network element at the other end performs processing after receiving the APS signaling and also performs switching and is in a switching state.
When the network element B at the other end generates bidirectional protection path fault again, the local request unit on the network element B informs the switching type control unit after detecting the alarm, the switching type control unit synthesizes the local request and the far-end signaling, and because the protection path fault priority of the network element B is higher than the working path fault of the network element A, the switching type control unit on the network element B makes a decision and informs the protection control unit to maintain the bidirectional switching processing, and the processing returns to the working path and is in the working state. The network element A synthesizes the local request and the far-end signaling, and because the priority of the working path fault of the network element A is lower than that of the working path fault of the network element B, the switching type control unit on the network element A decides and informs the protection control unit to degrade into unidirectional switching processing, only the local working path fault is processed, the working path is not returned, and the working path is still in the switching state. Because the network element A does not respond to the signaling sent by the opposite end according to the unidirectional switching processing, even if the network element B does not respond to the signaling sent by the opposite end according to the bidirectional processing, the actually achieved effect is consistent with the unidirectional switching. At this time, the service A to the service B is connected, and the service B to the service A is interrupted.
And then, if the B-end network element protection path is recovered, the B-end network element local request detection unit informs the switching type control unit, and the switching type control unit synthesizes the local request and the far-end signaling final decision and informs the protection control unit to maintain the bidirectional switching processing. When the A-end network element detects that the B-end network element has no fault, the two-way switching is upgraded. The network element at the B end is switched to the protection path, and the switching states of the network elements at the two ends are consistent. And the working path of the A-end network element is recovered in a fault mode, and the two end network elements return to the working path together after waiting for the WTR time.
An embodiment of the present invention further provides an apparatus for implementing optical channel 1+1 protection, including: the optical channel 1+1 protection device comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the processor executes the program to realize the realization method of the optical channel 1+1 protection.
The embodiment of the invention also provides a computer-readable storage medium, which stores computer-executable instructions, wherein the computer-executable instructions are used for executing the implementation method of the optical channel 1+1 protection.
In this embodiment, the storage medium may include, but is not limited to: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
Claims (10)
1. A method for realizing optical channel 1+1 protection comprises the following steps:
acquiring path fault information;
determining a switching type according to the path fault information;
and executing protection switching according to the switching type and the path fault information.
2. The method of claim 1,
the path failure information includes at least one of local path failure information and far-end path failure information.
3. The method of claim 2, wherein the obtaining path failure information comprises:
and acquiring the path fault information by detecting a local fault request and an Automatic Protection Switching (APS) signaling sent by a remote network element.
4. The method of claim 2, wherein the determining a switching type according to the path failure information comprises:
and when only local path fault information exists or only far-end path fault information exists, determining that the switching type is bidirectional switching.
5. The method of claim 2, wherein the determining a switching type according to the path failure information comprises:
and when the local path fault information and the far-end path fault information exist at the same time, determining the switching type according to the priority of the fault information.
6. The method of claim 5, wherein the determining the switching type according to the priority of the failure information comprises:
and when the priority of the local path fault information is greater than or equal to the priority of the far-end path fault information, determining that the switching type is bidirectional switching.
7. The method of claim 5, wherein the determining the switching type according to the priority of the failure information comprises:
and when the priority of the local path fault information is smaller than that of the far-end path fault information, determining that the switching type is unidirectional switching.
8. An apparatus for implementing optical channel 1+1 protection, comprising:
an acquisition unit configured to acquire path failure information;
a switching type automatic change decision control unit, configured to determine a switching type according to the path fault information;
and the protection switching control unit is used for executing protection switching according to the switching type and the path fault information.
9. An implementation device for optical channel 1+1 protection, comprising: memory, processor and computer program stored in the memory and executable on the processor, characterized in that the processor implements the method for implementing the optical channel 1+1 protection according to any one of claims 1 to 7 when executing the program.
10. A computer-readable storage medium storing computer-executable instructions for performing the method of implementing optical channel 1+1 protection according to any one of claims 1 to 7.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910814348.7A CN112448755A (en) | 2019-08-30 | 2019-08-30 | Method, device and equipment for realizing optical channel 1+1 protection |
| PCT/CN2020/103816 WO2021036605A1 (en) | 2019-08-30 | 2020-07-23 | Method, device and apparatus for realizing optical channel 1+1 protection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910814348.7A CN112448755A (en) | 2019-08-30 | 2019-08-30 | Method, device and equipment for realizing optical channel 1+1 protection |
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| CN112448755A true CN112448755A (en) | 2021-03-05 |
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| WO2021036605A1 (en) | 2021-03-04 |
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