CN117135025A - Fault processing method in lossless bandwidth adjustment process, electronic equipment and medium - Google Patents

Fault processing method in lossless bandwidth adjustment process, electronic equipment and medium Download PDF

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Publication number
CN117135025A
CN117135025A CN202210546025.6A CN202210546025A CN117135025A CN 117135025 A CN117135025 A CN 117135025A CN 202210546025 A CN202210546025 A CN 202210546025A CN 117135025 A CN117135025 A CN 117135025A
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bandwidth
path
lossless
sub
node
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王东
张源斌
刘大伟
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ZTE Corp
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ZTE Corp
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Priority to CN202210546025.6A priority Critical patent/CN117135025A/en
Priority to PCT/CN2023/089864 priority patent/WO2023221736A1/en
Publication of CN117135025A publication Critical patent/CN117135025A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0896—Bandwidth or capacity management, i.e. automatically increasing or decreasing capacities

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The embodiment of the invention provides a fault processing method, electronic equipment and a medium in a lossless bandwidth adjustment process, wherein the method comprises the following steps: and the first node receives service fault derivative information in the processing process of the lossless bandwidth adjustment flow, terminates lossless bandwidth adjustment according to the service fault derivative information, and performs switching processing on the bandwidths so that the bandwidths of all the first nodes are equal to the bandwidths of all the third nodes in the second sub-path. Through the technical scheme of the embodiment, when faults occur in the processing process of the lossless bandwidth adjustment flow, the first node terminates the lossless bandwidth adjustment and switches to the bandwidth equal to that of the third node, so that the service can be quickly switched to the second sub-path for transmission, the transmission can be started without waiting for the completion of the lossless bandwidth adjustment flow, the service damage time is effectively reduced, and the user experience is improved.

Description

Fault processing method in lossless bandwidth adjustment process, electronic equipment and medium
Technical Field
Embodiments of the present invention relate to, but are not limited to, the field of communications, and in particular, to a method, an electronic device, and a medium for fault handling in a lossless bandwidth adjustment process.
Background
The lossless adjustment technology (Hitless Adjustment of ODU, related standard ITU-t g.7044, commonly referred to as g.hao) of optical channel data units (Optical channel Data Unit, ODU) in an optical transport network (Optical Transport Network, OTN) supports the service of the transmission technology ODUFlex of any client signal in 0TN, and can enable the service to be adjusted from one rate to another rate under the lossless condition, the standard of the lossless adjustment technology prescribes that the service rate is changed according to a fixed adjustment rate in the service rate adjustment process, and according to the difference value between the initial bandwidth and the target bandwidth, the adjustment process needs second-level or even minute-level adjustment time, the processing time of the whole lossless adjustment process is longer, if the service is interrupted in the processing process of the lossless adjustment process, the lossless adjustment process is affected, so that the lossless adjustment cannot be completed normally, and service damage is caused. The problem of abnormality in the processing procedure of the nondestructive adjustment flow is mainly solved by setting a timeout mechanism in the nondestructive adjustment flow, namely, the method of exiting the nondestructive adjustment state after exceeding a preset time is mainly solved, but in order to ensure that the normal nondestructive adjustment flow is not affected, the preset time is required to exceed the time of the nondestructive adjustment flow, and then the preset time reaches a minute level, so that after waiting to trigger to exit the abnormal state after exceeding the preset time, the service is damaged for a longer time, and the user experience is poor.
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 mainly aims to provide a fault processing method, electronic equipment and a medium in a lossless bandwidth adjustment process, which can reduce service damage time and improve user experience.
In a first aspect, an embodiment of the present invention provides a method for processing a fault in a lossless bandwidth adjustment process, where the method is applied to a first node in a target service path of an optical transport network, where the first node is a node without protection, and the target service path further includes a first sub-path and a second sub-path for protecting the first sub-path, where the method includes:
the first node receives service fault derivative information in the processing process of a lossless bandwidth adjustment flow;
and according to the service fault derivative information, terminating lossless bandwidth adjustment, and performing switching processing on the bandwidth so that the bandwidths of all the first nodes are equal to the bandwidths of all the third nodes in the second sub-path.
In a second aspect, an embodiment of the present invention provides a method for processing a fault in a lossless bandwidth adjustment process, which is applied to an optical transmission network, where a target service path of the optical transmission network includes a first node, where the first node is a node without protection, and further includes a first sub-path, and a second sub-path protecting the first sub-path, where the method includes:
In the processing process of the lossless bandwidth adjustment flow, under the condition that at least one second node on a first sub-path for transmitting the service detects that the service has a fault, the first node receives service fault derivative information and switches the bandwidths according to the service fault derivative information so as to make the bandwidths of all the first nodes equal to the bandwidths of all the third nodes in the second sub-path.
In a third aspect, an embodiment of the present invention provides an electronic device, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method of fault handling in a lossless bandwidth adjustment procedure according to the first or second aspect when the computer program is executed.
In a fourth aspect, a computer readable storage medium stores computer executable instructions for performing the method for fault handling during lossless bandwidth adjustment according to the first or second aspect.
The embodiment of the invention comprises the following steps: the fault processing method in the lossless bandwidth adjustment process is applied to an optical transmission network, a target service path of the optical transmission network comprises a first node, the first node is a node without protection, and the method also comprises a first sub-path and a second sub-path for protecting the first sub-path, and comprises the following steps: in the processing process of the lossless bandwidth adjustment flow, under the condition that at least one second node on a first sub-path for transmitting the service detects that the service has a fault, the first node receives service fault derivative information and switches the bandwidths according to the service fault derivative information so that the bandwidths of all the first nodes are equal to the bandwidths of all the third nodes in the second sub-path. In the technical scheme of the embodiment, when a second node on a first sub-path for transmitting the service fails in the processing process of the lossless bandwidth adjustment flow, the first node switches the bandwidth according to the received service failure derivative information, so that the bandwidth of the first node is equal to the bandwidths of all third nodes in the second sub-path, the service can start transmission without waiting for the end of the lossless bandwidth adjustment flow, the service damage time can be reduced, and the user experience is improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
Fig. 1 is a schematic diagram of an optical transmission network for performing a fault handling method in a lossless bandwidth adjustment process according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an optical transmission network for performing a fault handling method in a lossless bandwidth adjustment process according to another embodiment of the present invention;
FIG. 3 is a flow chart of a method of fault handling in a lossless bandwidth adjustment procedure applied to a first node, provided in one embodiment of the present invention;
FIG. 4 is a flow chart of a method for handling faults during lossless bandwidth adjustment applied to an optical transmission network according to one embodiment of the present invention;
fig. 5 is a flowchart of a fault handling method in a lossless bandwidth adjustment procedure applied to a controller of an optical transmission network according to an embodiment of the present invention;
fig. 6 is a flowchart of a fault handling method in a lossless bandwidth adjustment procedure applied to a controller of an optical transmission network according to another embodiment of the present invention;
Fig. 7 is a schematic diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It should be noted that although functional block division is performed in a device diagram and a logic sequence is shown in a flowchart, in some cases, the steps shown or described may be performed in a different order than the block division in the device, or in the flowchart. The terms first, second and the like in the description, in the claims and in the above-described figures, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.
The embodiment of the invention provides a fault processing method in a lossless bandwidth adjusting process, electronic equipment and a medium, wherein the fault processing method in the lossless bandwidth adjusting process comprises the following steps: in the processing process of the lossless bandwidth adjustment flow, under the condition that at least one second node on a first sub-path for transmitting the service detects that the service has a fault, the first node receives service fault derivative information and switches the bandwidths according to the service fault derivative information so that the bandwidths of all the first nodes are equal to the bandwidths of all the third nodes in the second sub-path. In the technical scheme of the embodiment, when a second node on a first sub-path for transmitting the service fails in the processing process of the lossless bandwidth adjustment flow, the first node can switch the bandwidth according to the service failure derivative information, so that the bandwidth of the first node is equal to the bandwidths of all third nodes in the second sub-path, the service can be normally transmitted through the first node and the second sub-path, the end of the lossless bandwidth adjustment flow is not required to wait, the service damage time can be effectively reduced, and the user experience is improved.
Embodiments of the present invention will be further described below with reference to the accompanying drawings.
As shown in fig. 1, fig. 1 is a schematic diagram of an optical transmission network for performing a fault handling method in a lossless bandwidth adjustment process according to an embodiment of the present invention.
In the example of fig. 1, the optical transmission network is provided with different target paths according to different service requirements, and the target paths include a first node 111, a first sub-path 120 connected to the first node 111, and a second sub-path 130 for protecting the first sub-path 120, where the first node 111 is not provided with a node for protection, and in this embodiment, when the first sub-path 120 is a working sub-path, the second sub-path 130 is a protection sub-path. Of course, when the second sub-path 130 is a working sub-path, the first sub-path 120 is a protection sub-path, and the first sub-path 120 and the second sub-path 130 are in a switching relationship, which is not specifically limited in this embodiment, and may be set according to practical situations. For example: the first node 111 is provided with two, the first sub-path 120 is provided with four second nodes 121, the second sub-path 130 is provided with four third nodes 131, and the number of nodes provided in the first sub-path 120 is the same as that of the second sub-path 130. It will be appreciated that when the first sub-path 120 is a working sub-path, traffic is transmitted from the first node 111 to the other first node 111 via the first sub-path 120; when the first sub-path 120 fails, the first sub-path 120 and the second sub-path 130 are switched, and the second sub-path 130 is a working sub-path, and the traffic is transmitted from the first node 111 to another first node 111 through the second sub-path 130.
It should be noted that, in this embodiment, different types of paths are represented for the first sub-path 120 and the second sub-path 130, and the number of the first sub-path 120 and the second sub-path 130 may be set according to the service requirement, which is not specifically limited in this embodiment. Here, the first sub-path 120 and the second sub-path 130 have a switching relationship, and thus the number of the first sub-path 120 and the second sub-path 130 needs to be set to be the same.
Note that, the number of first nodes 111 is not particularly limited in this embodiment.
It should be noted that, the first node 111, the second node 121 on the first sub-path 120, and the third node 131 on the second sub-path 130 all support the function of performing bandwidth adjustment, that is, the capability of directly switching bandwidth when a fault is encountered in the lossless adjustment process.
In an embodiment, referring to fig. 2, the target path includes a third sub-path 110 composed of first nodes 111 without a protection sub-path, two first sub-paths 120, and two second sub-paths 130 for switching with the first sub-paths 120, and 1 first node 111, wherein one third sub-path 110 includes three first nodes 111, two first sub-paths 120 each include four second nodes 121, and two third sub-paths each include four third nodes 131. Fig. 2 is another embodiment of an optical transmission network, in which the specific roles of the first node 111, the third node 131 on the first sub-path 120 and the second sub-path 130 are the same as those of the first node 111, the third node 131 on the first sub-path 120 and the second sub-path 130 in fig. 1, and detailed descriptions thereof are omitted herein.
It will be appreciated by those skilled in the art that the optical transmission network shown in fig. 1, 2 is not limiting of the embodiments of the present invention, and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components. For example, a controller may be further disposed in the optical transmission network, and the controller may be communicatively connected to all nodes in the optical transmission network, or may be communicatively connected to some nodes in the optical transmission network.
The basic condition to be satisfied for transmission of traffic in an optical transmission network is that the bandwidths and resource matches for all nodes on the transmission target path are equal. The ODU lossless adjustment technology is specified in the g.7044 standard, and by using the ODU lossless adjustment technology, different types of ODUFlex services can be adjusted from one rate to another rate under the condition of no service loss. The adjusting flow of the integral lossless adjusting technology is divided into two independent parts, namely an LCR protocol flow and a BWR protocol flow, wherein LCR is responsible for negotiating the bandwidth occupation time slot between adjacent nodes, after the negotiation is successful, the integral service is ready for adjustment, and the BWR protocol is started to execute bandwidth adjustment. The BWR protocol realizes the adjustment of service bandwidth according to a fixed rate, and the standard specifies that the service rate is changed according to a fixed adjustment rate in the service rate adjustment process, the adjustment rate is 512Mbit/s 2, and the adjustment time from second level to minute level is needed for completing the adjustment process according to the difference value between the initial bandwidth and the target bandwidth. It is understood that the service bandwidth is not actually adjusted during the LCR protocol, but the bandwidth of each node is actually adjusted during the BWR protocol. Correspondingly, the processing procedure of the lossless adjustment procedure can be divided into two phases, wherein the first phase is a processing phase in which the bandwidth is not changed, for example, an LCR phase, and the second phase is a processing phase in which the bandwidth is changed, for example, a BWR phase. In this embodiment, the problem of the failure of the second node may occur in both phases, and therefore, the first node may receive the traffic failure derivative information transmitted due to the failure found by the second node in both phases.
It should be noted that, the ODU lossless adjustment procedure is an end-to-end synchronous adjustment operation, and is performed on nodes (the first node and the second node of the first sub-path) on the working path. The protection sub-path (second sub-path) is not actually communicated to form a closed loop due to the mechanism of 'concurrent selective receiving' of the protection function, and the non-destructive adjustment protocol cannot be executed through the transmission of the path following cost, so that the non-destructive adjustment cannot be completed, the third node of the protection sub-path needs to be additionally manually issued and switched, and the bandwidth of the working path is matched after the adjustment of the working channel is completed, so that the protection function can be realized. Thus, the lossless adjustment operation is performed on the nodes of the working path (the first node and the second node of the first sub-path) in operation, so that the nodes of the working path (the first node and the second node of the first sub-path) automatically change the bandwidth, and the bandwidth switching is performed on the command issued by the protection sub-path node (the third node of the second sub-path). After the working path and the protection sub-path are adjusted, the bandwidths of all nodes on the working path and the protection sub-path reach the target bandwidth, so that the protection function can be normally realized. It should be noted that, in order to meet the requirement of supporting lossless bandwidth adjustment, the service protection type is a bidirectional protection type through an automatic protection switching (Automatic Protection Switching, APS) protocol.
It should be noted that, in the existing protection processing technology, it cannot be guaranteed that the entire first sub-path can be completely switched to the second sub-path when a fault occurs in the lossless adjustment process, so that the service is quickly recovered. For example: the working first sub-path can be divided into a plurality of sections, the whole sub-path is cascade protection of a plurality of sections, the single point fault in the prior art only triggers the protection switching of the corresponding section, and other sections do not execute the protection switching. Under the non-lossless adjustment condition, the protection mechanism can quickly restore the service, but in the lossless adjustment process, because the whole first sub-path is in an adjustment state, only the specific section switching can not realize the consistency of the whole service state, and the service can not be restored. For example: the second sub-path is protected and may be in an SF state after the adjustment is started, which affects the switching action. Therefore, additional processing is required to ensure that the first sub-path is entirely switched to the second sub-path, and simultaneously ensure that the bandwidths of the first node and the second sub-path are consistent, so that the service can be recovered as soon as possible.
Based on the above optical transmission network, various embodiments of the fault handling method in the lossless bandwidth adjustment process of the present invention are presented below to solve the problems in the above embodiments.
As shown in fig. 3, fig. 3 is a flowchart of a method for handling a fault in a lossless bandwidth adjustment process according to an embodiment of the present invention, where the method for handling a fault in a lossless bandwidth adjustment process of a first node according to an embodiment of the present invention may include, but is not limited to, steps S100 and S200.
Step S100, the first node receives service defect derived information in the processing process of the lossless bandwidth adjustment flow.
Specifically, after determining the target path, in order to improve the bandwidth utilization ratio, the bandwidths of the first node on the target path and the second node in the first sub-path are subjected to lossless adjustment, when the processing procedure of the lossless adjustment flow is entered, a situation that a node on a selected working path is likely to be faulty occurs, when a fault occurs on the first sub-path for transmitting the service, the first node receives service fault derivative information. It should be noted that, the service defect derivative information may be sent to the first node by the second node that directly detects the fault, or may be generated and sent to the first node after the controller in the optical transmission network receives the service alarm sent by the second node.
And step S200, according to the service fault derivative information, terminating lossless bandwidth adjustment, and performing switching processing on the bandwidths so that the bandwidths of all the first nodes are equal to the bandwidths of all the third nodes in the second sub-path.
Specifically, when the first node receives the service fault derived information, continuing the lossless processing flow only causes service damage time, at this time, the first node may be configured to directly exit the lossless adjustment flow after receiving the service fault derived information, and switch the bandwidth to a preset bandwidth value, so that the bandwidths of the first node and the bandwidth are equal to those of all third nodes in the second sub-path and other first nodes in the first sub-path, where the second sub-path is a sub-path used for transmitting services after being switched with the first sub-path, and it is expected that after the second node fails, the second sub-path and the first sub-path are switched, and the service is transferred to a path formed by the first node and the second sub-path for transmission. In the technical solution of this embodiment, when a failure occurs in a second node on a first sub-path for transmitting a service during a processing procedure of a lossless bandwidth adjustment procedure, on one hand, a protection switching condition is triggered to switch the service to the second sub-path for transmission, and on the other hand, the first node can switch the bandwidth of the second sub-path according to service failure derivative information, so that the bandwidth of the first node is equal to the bandwidths of all third nodes in the second sub-path, so that the service can be normally transmitted through the first node and the second sub-path, without waiting for the end of the lossless bandwidth adjustment procedure, service damage time can be effectively reduced, and user experience is improved.
It should be noted that, after receiving the service fault derived information, the bandwidth switching target value of the first node may be preset to a certain fixed value, for example, an initial bandwidth, where the initial bandwidth is a bandwidth before being not adjusted; or may be preset as a target bandwidth, where the target bandwidth is a bandwidth to be achieved after the target adjustment processing, which is not specifically limited in this embodiment.
It should be noted that, the bandwidth switching target value of the first node may be switched to a fixed value only according to the received service defect derived information, and may be further performed to different stages as adjustment conditions in combination with the lossless adjustment protocol, so that after the service fault derived information is received, different bandwidths of the first node may be switched according to different stages. For example: under the condition of a first processing stage in the lossless bandwidth adjustment process, the first node switches the bandwidth to the initial bandwidth according to the service fault derivative information, and the first processing stage executes bandwidth adjustment for the unactuated BWR protocol; also for example: the bandwidth is switched to the target bandwidth according to the traffic failure derived information in case of a second processing stage in the bandwidth adjustment procedure being lossless, the second processing stage performing the bandwidth adjustment for initiating the bandwidth adjustment BWR protocol.
In addition, as shown in fig. 4, fig. 4 is a flowchart of a fault handling method in a lossless bandwidth adjustment process of an optical transmission network according to another embodiment of the present invention; the fault handling method may include, but is not limited to including, steps S410 and S420.
Step S410, in the processing procedure of the lossless bandwidth adjustment flow, under the condition that at least one second node on a first sub-path for transmitting the service detects that the service has a fault, the first node receives service fault derivative information;
in step S420, the first node performs a switching process on the bandwidths according to the service fault derivative information, so that the bandwidths of all the first nodes are equal to the bandwidths of all the third nodes in the second sub-path.
In an embodiment, when the first node receives the service fault derived information, continuing the lossless processing flow only causes service damage time, at this time, the first node may be configured to directly exit the lossless adjustment flow after receiving the service fault derived information, and switch the bandwidth to a preset bandwidth value, so that the bandwidths of the first node and the bandwidths are equal to those of all third nodes in the second sub-path, where the second sub-path is a sub-path used for transmitting the service after being switched with the first sub-path, and it is expected that after the second node fails, the second sub-path and the first sub-path will be switched, and since the bandwidths of the first node and the third node are equal, the service can be transferred to a path formed by the first node and the second sub-path to realize normal transmission of the service. In the technical solution of this embodiment, when a failure occurs in a second node on a first sub-path for transmitting a service during a processing procedure of a lossless bandwidth adjustment procedure, on one hand, a protection switching condition is triggered to switch the service to the second sub-path for transmission, and on the other hand, the first node can switch the bandwidth of the second sub-path according to service failure derivative information, so that the bandwidth of the first node is equal to the bandwidths of all third nodes in the second sub-path, so that the service can be normally transmitted through the first node and the second sub-path, without waiting for the end of the lossless bandwidth adjustment procedure, service damage time can be effectively reduced, and user experience is improved.
In an embodiment, in the lossless bandwidth adjustment process, for a first node without a protection section, the first node is configured to support a function of fast switching of faults, and when the protection section is switched, the first node can effectively cooperate with a recovery service. And for the working sub-paths (a first sub-path and a second sub-path) with the protection section, triggering all the working sub-paths to perform switching uniformly, and executing a bandwidth adjustment command by a third node on the protection sub-path, wherein the bandwidth adjustment command is matched with the lossless bandwidth adjustment process of the working path. Referring to fig. 5-6, the lossless adjustment procedure of the working path and the adjustment coordination manner of the protection sub-path may include, but are not limited to, the following schemes:
scheme one: the bandwidth of the third node is switched to a target bandwidth, and the target bandwidth is the bandwidth to be achieved after lossless adjustment processing; and the first node receives the service fault derivative information and switches the bandwidth to the target bandwidth according to the service fault derivative information.
Specifically, the third node of the second sub-path is guaranteed to be adjusted to the target bandwidth, then under the condition that the first sub-path suddenly fails when the lossless bandwidth adjustment is performed, the first node without the protection section is quickly adjusted to the target bandwidth according to the received service failure derivative information, the service is switched from the first sub-path to the second sub-path, the service transmission is recovered, and finally, the second node of the first sub-path in the failure state is also switched to the target bandwidth.
Scheme II: the first node receives service fault derivative information, and switches the bandwidth to an initial bandwidth according to the service fault derivative information, wherein the initial bandwidth is the bandwidth before lossless adjustment; the bandwidth of the third node remains the starting bandwidth.
Specifically, when lossless bandwidth adjustment is performed, a first sub-path of a working section suddenly breaks down, a first node without a protection section quickly rolls back to an initial bandwidth according to received service fault derivative information, service is switched to a second sub-path for transmission, and a second node of the first sub-path rolls back to the initial bandwidth after lossless adjustment fails; if the first sub-path of the working section does not fail when the lossless bandwidth adjustment is performed, after the second node of the first sub-path completes the lossless adjustment, the node of the second sub-path is adjusted to the target bandwidth.
Scheme III: under the condition of a first processing stage of a lossless bandwidth adjustment process, a first node receives service fault derivative information, and switches the bandwidth to an initial bandwidth according to the service fault derivative information, wherein the first processing stage is a processing stage in which the bandwidth is not changed, and the initial bandwidth is the bandwidth before lossless adjustment; the bandwidth of the third node fails to trigger a delayed bandwidth switch command, which indicates that the third node switches the bandwidth to a target bandwidth, which is a bandwidth to be reached after the lossless adjustment process, in case of the second processing stage of the lossless bandwidth adjustment process, and remains as an initial bandwidth, and finally the second node of the first sub-path of the failure state switches to the initial bandwidth.
Or under the condition of a second processing stage of the lossless bandwidth adjustment process, the first node receives service fault derivative information, switches the bandwidth to a target bandwidth according to the service fault derivative information, wherein the second processing stage is a processing stage in which the bandwidth is changed, and the target bandwidth is the bandwidth to be achieved after the lossless adjustment process; and the third node switches the bandwidth to the target bandwidth according to a delay bandwidth switching command, wherein the delay bandwidth switching command indicates that the third node switches the bandwidth to the target bandwidth under the condition of a second processing stage of the lossless bandwidth adjustment process, the target bandwidth is the bandwidth to be achieved after the lossless adjustment process, and finally, the bandwidth of the second node of the first sub-path in the fault state is switched to the target bandwidth.
Specific examples are as follows:
before lossless bandwidth adjustment is started, a delay adjustment command is issued to a third node in advance, the third node does not immediately execute adjustment after receiving the delay adjustment command, but waits for the actual bandwidth of the working channel business entering the second stage to start to change, and then executes adjustment after triggering, so as to ensure that the actual bandwidth is matched with the bandwidth adjustment state of the working channel.
In the lossless bandwidth adjustment process, in the first stage, if the actual bandwidth is unchanged, if the working sub-path (the first sub-path) suddenly fails, the first node without the protection section quickly rolls back to the initial bandwidth, and the service is switched from the working sub-path (the first sub-path) to the protection sub-path (the second sub-path);
When the first stage enters the second stage and the actual bandwidth starts to change, the protection sub-path (second sub-path) is switched to the target bandwidth;
after the lossless bandwidth adjustment flow is carried out and the actual bandwidth starts to change in the second stage, if the working sub-path (the first sub-path) suddenly fails, the first node without the protection section quickly adjusts to the target bandwidth, the service is switched to the protection sub-path (the second sub-path), and finally, the bandwidth of the second node of the first sub-path in the failure state is switched to the target bandwidth;
in the case that the lossless bandwidth adjustment flow is performed and the working sub-path (first sub-path) does not fail, the nodes (the first node and the second node of the first sub-path) of all the working sub-paths on the working path directly complete the lossless adjustment.
In the fourth scheme, under the condition that the first node receives service fault derivative information in the second processing stage of the lossless bandwidth adjustment process, the bandwidth is switched to a target bandwidth according to the service fault derivative information, the second processing stage is a processing stage in which the bandwidth is changed, and the target bandwidth is the bandwidth to be achieved after the lossless adjustment process; and the controller controls the third node to switch the bandwidth to the target bandwidth according to the service fault derivative information and the lossless bandwidth adjustment entering second processing stage information.
Specifically, for the step of switching the protection sub-path (the second sub-path) to the target bandwidth, after the controller determines that the BWR phase is entered, an adjustment command is issued to the third node, and the third node immediately executes adjustment after receiving the command, so as to ensure that the adjustment command matches with the bandwidth adjustment state of the working channel.
In the above four schemes, there may be different setting manners for each node bandwidth of the target path of the optical transmission network after the fault is detected, each node bandwidth of the target path may fall back to the original bandwidth, may also advance to the target bandwidth, and may also perform the distinguishing processing according to different adjustment stages in the lossless adjustment flow. Therefore, the bandwidth of the first node is equal to the bandwidth of all third nodes in the second sub-path, so that the service can be normally transmitted through the first node and the second sub-path, the end of the lossless bandwidth adjustment process is not required to be waited, the service damage time can be effectively reduced, and the user experience is improved.
It should be noted that, under the condition that the dynamic adjustment process of the lossless adjustment process cannot be completed, damage to the service is unavoidable, and then the intermediate state of the lossless adjustment process needs to be withdrawn in time, so that each node of the target path is restored to a stable state as soon as possible, and the service can be conveniently restored by cooperating with protection switching.
In an embodiment, if the BWR adjustment process is not started, that is, if the processing stage information is the first processing stage in the lossless bandwidth adjustment process, the first processing stage is a processing stage of negotiating a time slot occupied by a bandwidth between adjacent nodes, and at this time, the first node, the second node, and the third node do not actually start lossless bandwidth adjustment, so the existing lossless adjustment process can be directly exited, and the first node and the second node can switch the bandwidth to the initial bandwidth according to the service fault derived information, and since the third node does not reach the preset condition preset in the BWR adjustment stage and still remains the initial bandwidth, the bandwidth of the third node can be not required to be adjusted, and the initial bandwidth is the bandwidth before being adjusted, so at this time, the bandwidths of the first node, the second node, and the third node are all original service configurations, that is, the bandwidths of the first node, the second node, and the third node are equal.
If the BWR adjustment process has already been started, i.e. in case the processing stage information is the second processing stage of the lossless bandwidth adjustment process, it is necessary to exit the lossless bandwidth adjustment process and directly perform the adjustment to the target bandwidth, whereas the bandwidth of the third node switches to the target bandwidth as the third node reaches the preset condition preset in the BWR adjustment stage. The adjustment is equivalent to setting the service according to the new bandwidth again, synchronization between the node and other nodes is not needed to be considered, and only the service configuration is needed to be executed at a single point, so that the execution time is very short, each node in the target path after interruption of the service is not in an intermediate state of incomplete adjustment, but in a certain stable state, and when all the single nodes finish the adjustment of the bandwidth to the target bandwidth, the service can be quickly recovered, so that the time of the abnormal state of the service is shortened as a whole.
In an embodiment, for a second node of a first sub-path in the working path, if the second node is in the process of lossless adjustment flow, then in order to ensure normal transmission of the traffic, the traffic needs to be entirely switched to a protection sub-path (second sub-path). The complex scenario is a multi-section cascade protection scenario, and there is a problem that a certain working sub-path (a first sub-path) of the working channel has an SF alarm, but not all protection sub-paths (second sub-paths) corresponding to the working sub-paths (first sub-paths) have Signal Failure (SF) alarms. According to the normal multi-section cascade protection function requirement, each working sub-path (first sub-path) only responds to SF alarms in the section, only the working sub-path (first sub-path) with faults can execute protection switching action, and other working sub-paths (first sub-paths) do not execute the protection switching action, but the working sub-path (first sub-path) which does not execute the protection switching action is still on the working path and is not switched to the protection path with a determined state, and the related node of the part of working sub-paths (first sub-path) is in a state in a lossless adjustment flow, and the service states of the upper and lower path nodes (first nodes) and the protection channel node (third node) which executes the protection switching section are inconsistent, so that service cannot be opened. To solve the above problem, it is necessary to ensure that after any node service fails, protection states of all protection sub-paths (second sub-paths) corresponding to the working sub-paths (first sub-paths) are in SF states and switch. For example: because the switch itself can cause the SF state, if at least one node in any protection sub-path (second sub-path) supports fast switch to the target bandwidth, the switch itself can cause the SF state of the section to trigger the protection switch, and then all the working sub-paths (first sub-paths) can be switched with the corresponding protection sub-paths (second sub-paths). Also for example: in the lossless bandwidth adjustment process, multi-section cascading protection (TCM SNC/S) is temporarily modified into service integral protection (PM SNC/N), the protection switching is not triggered only according to service alarms in a working sub-path (a first sub-path) of the TCM SNC/S, but also can be triggered by service alarms modified into other sections, the section protection is not subdivided, namely, all sections are subjected to the protection switching after single-point faults, the quick recovery of faults in the adjustment process of the service can be ensured, the normal section protection state can be recovered after the adjustment is finished, and the capability of resisting the multi-point faults can be provided again.
It should be noted that, in order to achieve the technical requirement of the present embodiment, the protection mode of the first sub-path for controlling the switching with the second sub-path is set to the SNC/N protection mode by using the non-intrusive monitored subnet connection.
Specifically, if a certain working path (the first sub-path) is in a non-SNC/N protection mode, the service failure of the working path (the first sub-path) may cause the failure of the overall switching. The method can be solved by the following steps that in the process of executing the lossless bandwidth adjustment flow, the protection mode of the section is required to be temporarily changed into the SNC/N protection mode, and the original protection mode is restored after the adjustment process is finished; the solution 2 selects a second node of a certain service process on the working path of the segment, so that the second node supports a process flow without protecting the node, and when the second node monitors a service fault, the second node immediately executes a switching command, so that the bandwidth of the second node is inconsistent with the service rate of other second nodes of the segment, a service alarm is generated, and switching is triggered.
In an embodiment, if the second node fails during the processing of the lossless adjustment procedure, in order to ensure normal transmission of the traffic, the traffic of the first sub-path needs to be entirely switched to the protection sub-path (the second sub-path). The SF state of the sub-path (second sub-path) needs to be protected in the switching process disappears, and if the first node completes the switching, the third node should be in the alarm disappearing state. However, if some additional processing is performed, the first node may not be required to complete the switching, and the third node may be in a non-SF state, so as to speed up the overall protection switching, and shorten the time of the abnormal service state as a whole.
For the third node in the protection sub-path (second sub-path), the third node needs to be readjusted to a non-SF state after being adjusted to the target bandwidth so as to realize the protection function, and the protection mode of the third node can be set to be a sub-network connection protection SNC/S mode of sub-layer monitoring; or the third node stops the alarm monitoring function; or the third node is set to exit the SF state if it is determined that the automatic protection switching APS protocol state is a normal state. The above processing can make the third node in a non-SF state in the business lossless adjustment process so as to realize the protection function.
Specifically, for the third node in the protection sub-path (the second sub-path), when the working path fails, according to the requirement on the uplink and downlink node (the first node) in the first sub-path, the uplink and downlink node (the first node) in the first sub-path can quickly perform adjustment, and before the adjustment is not completed, bandwidths of the uplink and downlink node (the first node) in the first sub-path at two ends and the third node in the protection sub-path (the second sub-path) are not consistent, so that the third node in the protection sub-path (the second sub-path) may be in an SF state, the protection switching cannot be performed, and the SF state needs to be disappeared until the uplink and downlink node (the first node) in the first sub-path completes adjustment, and the protection switching can be performed at this time. Compared with the original protection switching time, an additional adjustment is needed, and the time for confirming the disappearance of the alarm after the completion of the adjustment is needed. If it is desired to keep only the original protection switching time, it is necessary to ensure that the third node in the protection sub-path (second sub-path) is in a non-SF state. While in some scenarios it may be possible to directly meet, for example, that the protection sub-path (second sub-path) is a sub-network connection protection SNC/S mode of sub-layer monitoring or a sub-network connection protection SNC/I mode of an inherent monitoring mode. Some situations cannot be satisfied directly, for example, the protection sub-path is in SNC/N mode, and some operations are needed to shorten the time in the lossless adjustment process. For example, when the protection sub-path (second sub-path) is changed to the SNC/S mode, the protection sub-path is not affected by adjustment of the add/drop nodes, and the protection sub-path does not enter the SF state; for another example, the alarm monitoring function of the protection sub-path (the second sub-path) is canceled, and the adjustment process is always in a normal state; for another example, the APS protocol needs to be supported because of bidirectional protection, and the APS protocol regeneration point is on the line interface of the protection channel, if the APS protocol is normal, the state of the protection sub-path (the second sub-path) can be considered normal, and the SF alarm is not reported. After the lossless adjustment is completed, the original configuration is restored. It should be noted that, the user may choose to not process or to solve the above problem according to the network configuration.
In the above embodiment, when the service processing node monitors the service alarm, it may be considered that the monitoring receives the service fault derived information to trigger the action directly, and performs the switching processing on the bandwidth of the service processing node itself, or may be triggered by the controller issuing the adjustment command to each node in the target path after the service fault derived information is reported. The former needs to upgrade the single board software, the processing speed is high, the latter only needs to upgrade the control function, the single board software can not be upgraded, the processing speed is slow, and the time required by the two processes is equivalent to the time required by the overtime mechanism and is faster. The following embodiments mainly describe in detail the triggering process of the controller for issuing bandwidth adjustment commands to each node in the target path after reporting the service fault derived information.
Specifically, after the controller receives the service fault derivative information, the transmission path of the service can be switched from the first sub-path to the second sub-path according to the service fault derivative information to form a transmission path connected with the first sub-path and the second sub-path, and then bandwidth switching information is sent to all third nodes in all first nodes and second sub-paths respectively, so that all third nodes in all first nodes and second sub-paths adjust respective bandwidths to the same bandwidth according to the bandwidth switching information, and the bandwidth states of all nodes on the service transmission path are consistent. In the technical solution of this embodiment, when a failure occurs in a second node on a first sub-path for transmitting a service during a processing procedure of a lossless bandwidth adjustment procedure, the controller may control all first nodes and all third nodes in the second sub-path to perform switching processing according to service failure derivative information, so that bandwidths of all first nodes are equal to bandwidths of all third nodes in the second sub-path, so that the service can start transmission without waiting for the end of the lossless bandwidth adjustment procedure, service damage time can be reduced, and user experience is improved.
It should be noted that, the bandwidths adjusted to the same bandwidth by all the third nodes in all the first nodes and the second sub-paths according to the bandwidth switching information may be the initial bandwidth or the target bandwidth, and the embodiment is not limited specifically and may be set according to requirements.
In an embodiment, the controller switches the path of the service transmission from the first sub-path to the second sub-path according to the service fault derivative information, then obtains the processing stage information of the lossless bandwidth adjustment flow, determines the bandwidth switching information according to the processing stage information, and then sends the bandwidth switching information to all the first nodes and all the third nodes in the second sub-path respectively, so that all the first nodes and all the third nodes in the second sub-path adjust respective bandwidths to the same bandwidth according to the bandwidth switching information, thereby enabling the bandwidth states of all the nodes on the service transmission path to be consistent, enabling the service to start transmission without waiting for the end of the lossless bandwidth adjustment flow, reducing service damage time, and improving user experience.
It should be noted that, in the case that the processing stage information is the first processing stage in the lossless bandwidth adjustment process, determining that the bandwidth switching information is used for instructing the first node or the third node to switch the bandwidth to the initial bandwidth, where the first processing stage is a processing stage of negotiating about the time slot occupied by the bandwidth between the adjacent nodes, and the initial bandwidth is the bandwidth before the adjustment; or, in the case that the processing stage information is the second processing stage in the lossless bandwidth adjustment process, determining that the bandwidth switching information is used for instructing the first node or the third node to switch the bandwidth to the target bandwidth, where the second processing stage performs bandwidth adjustment for starting the BWR protocol, and the target bandwidth is the bandwidth to be reached after the target adjustment process.
In addition, an embodiment of the present invention provides an electronic device, the electronic device 700 including: memory, a processor, and a computer program stored on the memory and executable on the processor.
Processor 710 and memory 720 may be connected by a bus or other means.
Memory 720 is a schematic readable storage medium of a system platform architecture for performing a fault handling method in a lossless bandwidth adjustment process according to one embodiment of the present invention, and may be used to store a non-transitory software program and a non-transitory computer executable program. In addition, memory 720 may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some implementations, the memory 720 may optionally include memory remotely located relative to the processor 710, which may be connected to the electronic device 700 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The non-transitory software program and instructions required to implement the above-described embodiment of the method for handling faults during lossless bandwidth adjustment are stored in the memory, which when executed by the processor performs the above-described embodiment of the method for handling faults during lossless bandwidth adjustment, e.g. when the electronic device 700 is a first node of an optical transmission network, then the method steps S100 to S200 in fig. 3 described above are performed; for example, when the electronic device 700 is respectively disposed at a first node, a second node, and a third node in the optical transmission network, the above-described method steps S410 to S420 in fig. 4 are performed.
Furthermore, an embodiment of the present invention provides a computer-readable storage medium storing computer-executable instructions for performing the above-described method of fault handling during lossless bandwidth adjustment of a controller, for example, performing the above-described method steps S100 to S200 in fig. 3 when the computer-readable storage medium is provided at a first node of an optical transmission network; for example, when the computer-readable storage medium is provided in a first node, a second node, and a third node, respectively, in the optical transmission network, then the above-described method steps S410 to S420 in fig. 4 are performed.
Those of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, 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 both 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 known to those skilled 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 be accessed by a computer. Furthermore, as is well known to those of ordinary skill in the art, communication media typically include 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 may include any information delivery media.
While the preferred embodiment of the present invention has been described in detail, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit and scope of the present invention, and these equivalent modifications or substitutions are included in the scope of the present invention as defined in the appended claims.

Claims (16)

1. A method for processing a fault in a lossless bandwidth adjustment process, applied to a first node in a target service path of an optical transmission network, where the first node is a node without protection, the target service path further includes a first sub-path and a second sub-path for protecting the first sub-path, and the method includes:
the first node receives service fault derivative information in the processing process of a lossless bandwidth adjustment flow;
and according to the service fault derivative information, terminating lossless bandwidth adjustment, and performing switching processing on the bandwidth so that the bandwidths of all the first nodes are equal to the bandwidths of all the third nodes in the second sub-path.
2. The method for processing a fault in a lossless bandwidth adjustment process according to claim 1, wherein the switching processing of the bandwidth according to the service fault derivative information includes:
And switching the bandwidth to an initial bandwidth according to the service fault derivative information, wherein the initial bandwidth is the bandwidth before being adjusted.
3. The method for processing a fault in a lossless bandwidth adjustment process according to claim 1, wherein the switching processing of the bandwidth according to the service fault derivative information includes:
and switching the bandwidth to a target bandwidth according to the service fault derivative information, wherein the target bandwidth is the bandwidth to be achieved after target adjustment processing.
4. The method for processing a fault in a lossless bandwidth adjustment process according to claim 1, wherein the switching processing of the bandwidth according to the service fault derivative information includes:
obtaining lossless bandwidth adjustment processing stage information;
and performing bandwidth switching processing according to the service fault derivative information and the lossless bandwidth adjustment processing stage information.
5. The method for processing a fault in a lossless bandwidth adjustment process according to claim 4, wherein the performing bandwidth switching processing according to the service fault derivative information and the lossless bandwidth adjustment processing stage information includes:
under the condition that the processing stage information is a first processing stage in the lossless bandwidth adjustment process, switching the bandwidth to an initial bandwidth according to the service fault derivative information, wherein the first processing stage is a processing stage in which the bandwidth is not changed;
Or,
and under the condition that the processing stage information is the second processing stage in the lossless bandwidth adjustment process, switching the bandwidth to the target bandwidth according to the service fault derivative information, wherein the second processing stage is the processing stage in which the bandwidth is changed.
6. A fault handling method in a lossless bandwidth adjustment process, applied to an optical transmission network, wherein a target service path of the optical transmission network comprises a first node, the first node is a node without protection, and further comprises a first sub-path and a second sub-path for protecting the first sub-path, the method comprises the following steps:
in the processing process of the lossless bandwidth adjustment flow, under the condition that at least one second node on a first sub-path for transmitting the service detects that the service has a fault, the first node receives service fault derivative information and switches the bandwidths according to the service fault derivative information so as to make the bandwidths of all the first nodes equal to the bandwidths of all the third nodes in the second sub-path.
7. The method for processing the failure in the lossless bandwidth adjustment process according to claim 6, wherein the first node receives service failure derivative information, and performs switching processing on bandwidths according to the service failure derivative information, so that bandwidths of all the first nodes are equal to bandwidths of all third nodes in the second sub-path, including:
The first node receives service fault derivative information and switches the bandwidth to an initial bandwidth according to the service fault derivative information, wherein the initial bandwidth is the bandwidth before lossless adjustment is not performed;
the bandwidth of the third node remains the starting bandwidth.
8. The method for processing the failure in the lossless bandwidth adjustment process according to claim 6, wherein the first node receives service failure derivative information, and performs switching processing on bandwidths according to the service failure derivative information, so that bandwidths of all the first nodes are equal to bandwidths of all third nodes in the second sub-path, including:
the bandwidth of the third node is switched to a target bandwidth, wherein the target bandwidth is the bandwidth to be achieved after lossless adjustment processing;
and the first node receives the service fault derivative information and switches the bandwidth to the target bandwidth according to the service fault derivative information.
9. The method for processing the failure in the lossless bandwidth adjustment process according to claim 6, wherein the first node receives service failure derivative information, and performs switching processing on bandwidths according to the service failure derivative information, so that bandwidths of all the first nodes are equal to bandwidths of all third nodes in the second sub-path, including:
Under the condition of a first processing stage of a lossless bandwidth adjustment process, the first node receives service fault derivative information, and switches the bandwidth to an initial bandwidth according to the service fault derivative information, wherein the first processing stage is a processing stage in which the bandwidth is not changed, and the initial bandwidth is the bandwidth before lossless adjustment;
the bandwidth of the third node fails to trigger a delay bandwidth switch command, which indicates that the third node switches the bandwidth to a target bandwidth in case of a second processing stage of the lossless bandwidth adjustment process, the target bandwidth being a bandwidth to be reached after the lossless adjustment process, to be kept as a start bandwidth.
10. The method for processing the failure in the lossless bandwidth adjustment process according to claim 6, wherein the first node receives service failure derivative information, and performs switching processing on bandwidths according to the service failure derivative information, so that bandwidths of all the first nodes are equal to bandwidths of all third nodes in the second sub-path, including:
under the condition of a second processing stage of a lossless bandwidth adjustment process, the first node receives service fault derivative information, and switches the bandwidth to a target bandwidth according to the service fault derivative information, wherein the second processing stage is a processing stage in which the bandwidth is changed, and the target bandwidth is the bandwidth to be achieved after the lossless adjustment process;
The third node switches the bandwidth to a target bandwidth according to a delay bandwidth switching command, wherein the delay bandwidth switching command indicates that the third node switches the bandwidth to the target bandwidth in the case of the second processing stage of the lossless bandwidth adjustment process, and the target bandwidth is the bandwidth to be reached after the lossless adjustment process.
11. The method for processing the failure in the lossless bandwidth adjustment process according to claim 6, wherein the optical transmission network further includes a controller, the first node receives service failure derivative information, and performs switching processing on the bandwidths according to the service failure derivative information, so that the bandwidths of all the first nodes are equal to the bandwidths of all the third nodes in the second sub-path, and the method includes:
under the condition that the first node is in a second processing stage of a lossless bandwidth adjustment process, the first node receives service fault derivative information, and switches the bandwidth to a target bandwidth according to the service fault derivative information, wherein the second processing stage is a processing stage in which the bandwidth is changed, and the target bandwidth is the bandwidth to be achieved after lossless adjustment processing;
and the controller controls the third node to switch the bandwidth to the target bandwidth according to the service fault derivative information and lossless bandwidth adjustment entering second processing stage information.
12. The method of fault handling during lossless bandwidth adjustment according to claim 8 or 10 or 11, wherein the optical transmission network further comprises a controller, the method further comprising, after the controller switches traffic from the first sub-path to the second sub-path:
the controller controls the bandwidth of the second node to switch to the target bandwidth.
13. The method for handling faults during lossless bandwidth adjustment according to claim 6, wherein during processing of the lossless bandwidth adjustment procedure, the method further comprises:
and setting a protection mode of the first sub-path for controlling switching with the second sub-path as an SNC/N (selective non-network/network) protection mode by utilizing non-intrusive monitoring.
14. The method for fault handling during lossless bandwidth adjustment according to claim 6, wherein before the bandwidth of the third node of the second sub-path is set to a preset bandwidth, the method further comprises:
the protection mode of the third node is set to be a sub-network connection protection SNC/S mode of sub-layer monitoring;
or the third node stops the alarm monitoring function;
or the third node is set to exit the SF state if the automatic protection switching APS protocol state is determined to be the normal state.
15. An electronic device, comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method for handling faults during lossless bandwidth adjustment according to any one of claims 1 to 5 or implements the method for handling faults during lossless bandwidth adjustment according to any one of claims 6 to 14 when executing the computer program.
16. A computer-readable storage medium storing computer-executable instructions for performing the in-lossless bandwidth adjustment method according to any one of claims 1 to 5 or for performing the in-lossless bandwidth adjustment method according to any one of claims 6 to 14.
CN202210546025.6A 2022-05-19 2022-05-19 Fault processing method in lossless bandwidth adjustment process, electronic equipment and medium Pending CN117135025A (en)

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