CN115174363A - Multi-protection group set fast switching method - Google Patents
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- H—ELECTRICITY
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- 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
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0663—Performing the actions predefined by failover planning, e.g. switching to standby network elements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/03—Arrangements for fault recovery
- H04B10/032—Arrangements for fault recovery using working and protection systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/03—Arrangements for fault recovery
- H04B10/038—Arrangements for fault recovery using bypasses
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Abstract
The invention discloses a method for quickly switching multiple protection group sets, which comprises the following steps: creating a first protection group set and a second protection group set in a network equipment management system, and creating a plurality of member protection groups in the first protection group set; respectively creating a first change-over switch and a second change-over switch in the first protection group set and the second protection group set; the plurality of member protection groups are connected with the working pipeline through a first selector switch; when the working pipelines of part of member protection groups have faults, the part of member protection groups with faults are migrated and processed to obtain a plurality of fault protection groups; and when the fault of the fault protection group is removed, migrating the fault protection group back to the first protection group set. The invention solves the problem of the mis-switching of the member protection group in the prior art, and can effectively ensure the protection switching performance of the protection group set.
Description
Technical Field
The invention relates to the technical field of network equipment management, in particular to a method for quickly switching multiple protection group sets.
Background
In the network protection technology, each working pipeline is allocated with a dedicated high-priority protection pipeline, and network resource switching is realized in a predictable manner after the working pipeline fails, so that a network provider can more easily and effectively plan a network and understand the activity state of the network, and a bearer network has a protection switching capability of less than 50ms (sub 50 ms). Network applications such as large customer lines with high requirements on network communication quality are usually configured with dedicated protection groups in advance when a network is opened, so as to ensure the SLA quality of network services and realize carrier-class operation.
Due to the limited resources of the optical fiber path of the network, various network services are actually carried on the hard pipe of the shared optical fiber path by dividing the soft pipe. Each network protection group is equipped with a dedicated fault detector, such as CCM, BFD, etc., in its own working and protection pipelines. When the optical fiber access fails, each protection group discovers network faults through a fault detector of the protection group, and triggers batch switching of each protection group. In order to improve the efficiency of protection switching, when the network protection switching is implemented, a plurality of protection groups sharing the same working pipeline and protection pipelines are usually bound, and when any member protection group in the binding group detects a pipeline fault, all the protection groups are triggered to switch.
However, the protection group binding technology enforces the binding of a plurality of protection groups, if a hose line of a certain protection group has a fault, all protection groups of the protection binding group are triggered to be switched by mistake, and a subsequent protection group switched by mistake is recovered to a normal state without a mechanism.
Disclosure of Invention
According to an embodiment of the present invention, a method for fast switching multiple protection group sets is provided, which includes the following steps:
creating a first protection group set and a second protection group set in an external network equipment management system, and creating a plurality of member protection groups in the first protection group set, wherein any member protection group comprises a working pipeline, a protection pipeline and a fault detector, and the first fault detector is used for detecting fault information of the working pipeline;
creating a first switch in a first set of protection groups;
the plurality of member protection groups are bound with the first transfer switch, and are respectively connected with the working pipelines of the plurality of member protection groups through the first transfer switch;
creating a second diverter switch in the second set of protection groups;
when the working pipelines of part of member protection groups are in fault, the part of member protection groups in fault are migrated and processed to obtain a plurality of fault protection groups;
and when the faults of the working pipelines of the plurality of fault protection groups are removed, the plurality of fault protection groups are migrated to the first protection group set.
Further, when a working pipeline of a part of member protection groups fails, the part of member protection groups which fail are migrated to obtain a plurality of failure protection groups, and the method comprises the following substeps:
when the working pipelines of part of member protection groups break down, the working state of the first protection group set is switched for the first time;
transferring part of member protection groups with faults of the main pipeline to a second protection group set to obtain a plurality of fault protection groups;
and switching the working state of the first protection group set for the second time.
Further, when a working pipeline of a part of member protection groups fails, the working state of the first protection group set is switched for the first time, and the method comprises the following substeps:
when a working pipeline of a part of member protection groups breaks down, a fault detector of the member protection groups transmits the information of the failure of the member protection groups to a first protection group set;
the first protection group set switches the first switch to be communicated with the protection pipelines of the plurality of member protection groups.
Further, when the working pipeline of part of the member protection groups fails, the failure detector of the member protection group transmits the failure information of the member protection group to the first protection group set, and the method comprises the following substeps:
when the working pipelines of part of the member protection groups have faults, the fault detectors of the member protection groups transmit the fault information of the member protection groups to the member protection groups;
the member protection group transmits the failure information to the first protection group set.
Further, the method for transferring the partial member protection groups with the faults of the main pipeline to the second protection group set to obtain a plurality of fault protection groups comprises the following substeps:
updating the software state of the part of the member protection group with the failure of the working pipeline;
the network equipment management system migrates part of member protection groups with faults of the working pipeline into a second protection group set to obtain a plurality of fault protection groups;
and binding the plurality of fault protection groups with the second change-over switch, wherein the plurality of fault protection groups are connected with the protection pipelines of the plurality of fault protection groups through the second change-over switch.
Further, the second switching of the working state of the first protection group set comprises the following substeps:
after the partial member protection groups with faults of the main pipeline are completely transferred to the second protection group set, fault detectors of a plurality of fault protection groups transmit switching signals to the first protection group set;
the first protection group set switches the first switch to be connected with the working pipelines of the rest of the member protection groups.
Further, after the failure of the working pipelines of the plurality of failure protection groups is removed, the plurality of failure protection groups are migrated to the first protection group set, and the method comprises the following substeps:
when the fault of the working pipeline of any fault protection group is removed, the fault detector of the fault protection group transmits the fault removal information of the fault protection group to the second protection group set;
the network equipment management system migrates the fault protection group to a first protection group set;
binding a fault protection group with a first change-over switch, wherein the fault protection group is connected with a working pipeline of the fault protection group through the first change-over switch;
the software state of the failsafe group is updated.
Further, when the fault of the working pipeline of any fault protection group is removed, the fault detector of the fault protection group transmits the fault removal information of the fault protection group to the second protection group set, and the method comprises the following substeps:
when the fault of the working pipeline of any fault protection group is removed, the fault detector of the fault protection group transmits fault removal information to the fault protection group;
the fault protection group passes the fault resolution information to the second set of protection groups.
According to the method for rapidly switching the multi-protection group set, the problem of mistaken switching of other member protection groups caused by the fault of some member protection groups in the prior art is solved, and the protection switching performance of the protection group set can be effectively ensured.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and are intended to provide further explanation of the technology claimed.
Drawings
Fig. 1 is a schematic diagram illustrating a logic relationship among a protection transient switching state, a working stable switching state, and a protection stable switching state according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a fast switching method for multiple protection group sets according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a protection group set failover process according to an embodiment of the present invention;
FIG. 4 is a flowchart illustrating a method for fast switching between multiple protection group sets according to an embodiment of the present invention;
FIG. 5 is a flow chart of the substeps of step S5 in FIG. 4
FIG. 6 is a flowchart of the substeps of step S51 in FIG. 5;
FIG. 7 is a flowchart of the substeps of step S511 in FIG. 6;
FIG. 8 is a flowchart of the substeps of step S52 of FIG. 5;
fig. 9 is a flowchart of sub-steps of step S53 in fig. 5;
FIG. 10 is a flowchart of the substeps of step S6 of FIG. 4;
fig. 11 is a flowchart of the substeps of step S61 in fig. 10.
Detailed Description
The present invention will be further explained by the following detailed description of preferred embodiments thereof, which is to be read in connection with the accompanying drawings.
First, a multi-protection group set fast switching method according to an embodiment of the present invention will be described with reference to fig. 1 to 11, which is used for transmitting data and has a wide application range.
In actual network deployment, each customer is usually dedicated to deploy a network protection group for meeting the requirements of SLA and the like agreed with the customer, and the network protection groups usually have the same working pipeline and protection pipeline. Thus, the invention introduces the concept of protection group set, and defines a protection group with the same working pipe and protection pipe as a protection group set.
In order to realize reliable switching of the protection group set, the invention defines three states of the protection group set, namely a working stable switching state, a protection stable switching state and a protection instant switching state; the protection instant switching state is used for indicating that after the protection group senses the fault, the protection group set is triggered to be rapidly switched to a state of using the protection pipeline to carry the service; at this time, after the protection group set hardware state is uniformly switched, the software state of each member protection group is not updated, and the service is still carried by adopting a working pipeline; the protection stable switching state is used for indicating that the software state and the hardware state of each member protection group are consistent and are the states of using the protection pipeline to carry the service after each protection group of the protection group set senses the fault. The working stable switching state indicates that the working pipeline and the protection pipeline of each member protection group of the protection group set have no fault, and the software state and the hardware state of each member protection group are consistent and are both the states of using the working pipeline to carry services.
As shown in fig. 1 to 11, a method for fast switching a multi-protection group set according to an embodiment of the present invention includes the following steps:
in S1, as shown in fig. 1 to 4, a first protection group set (protection group set a) and a second protection group set (protection group set B) are created in an external network device management system, and a plurality of member protection groups are created in the first protection group set (protection group set a), where any member protection group includes a working pipeline, a protection pipeline, and a fault detector, and the first fault detector is used to detect fault information of the working pipeline.
In S2, as shown in fig. 1 to 4, a first changeover switch is created in the first protection group set (protection group set a).
In S3, as shown in fig. 1 to 4, a second changeover switch is created in the second protection group set (protection group set B).
In S4, as shown in fig. 1 to 4, a plurality of member protection groups are bound to a first switch, and the plurality of member protection groups are respectively connected to working pipes of the plurality of member protection groups through the first switch, and the working pipes are used to carry a service, so that a first protection group set (protection group set a) is in a stable working switching state.
In S5, as shown in fig. 1 to 4, when a working pipeline of a part of the member protection groups fails, the failed part of the member protection groups is migrated, and a plurality of failure protection groups are obtained.
In S51, as shown in fig. 1 to 3 and 5, when a working pipe of a part of member protection groups fails, the working state of the first protection group set (protection group set a) is switched for the first time, and the first protection group set (protection group set a) is switched from the working stable switching state to the protection instantaneous switching state.
Further, when the working pipeline of part of the member protection groups fails, the working state of the first protection group set (protection group set A) is switched for the first time, and the method comprises the following substeps:
in S511, as shown in fig. 1 to 3 and 6, when a working pipeline of a part of the member protection groups fails, the failure detector of the member protection group transmits the failure information of the member protection group to the first protection group set (protection group set a).
Further, when the working pipeline of part of the member protection groups fails, the failure detector of the member protection group transmits the failure information of the member protection group to the first protection group set (protection group set A), comprising the following sub-steps:
in S5111, as shown in fig. 1 to 3, and 7, when a working pipeline of a part of the member protection groups fails, the failure detector of the member protection group transmits the failure information of the member protection group to the member protection group.
In S5112, as shown in fig. 1 to 3 and 7, the member protection group transmits the failure occurrence information to the first protection group set (protection group set a).
In S512, as shown in fig. 1 to 3 and 6, the first protection group set (protection group set a) switches the first switch to communicate with the protection pipes of the plurality of member protection groups, so that the plurality of member protection groups use the protection pipes to carry the service, thereby switching the first protection group set (protection group set a) to the protection instantaneous switching state.
In S52, as shown in fig. 1 to 3 and 5, part of the member protection groups with a fault in the main pipeline are migrated to the second protection group set (protection group set B), so as to obtain a plurality of fault protection groups.
Further, the method for protecting the main pipeline by the protection group migration includes the following substeps:
in S521, as shown in fig. 1 to 3 and 8, the software state of the partial member protection group in which the working pipeline fails is updated, so that the software state of the member protection group is consistent with the actual link connection state of the member protection group.
In S522, as shown in fig. 1 to 3 and 8, the network device management system migrates the part of the member protection groups with the failure in the working pipeline to the second protection group set (protection group set B), so as to obtain a plurality of failure protection groups.
In S523, as shown in fig. 1 to 3 and 8, a plurality of fault protection groups are bound to a second switch, and the plurality of fault protection groups are connected to the protection pipes of the plurality of fault protection groups through the second switch, so that the plurality of fault protection groups use the protection pipes to carry services, and thus the second protection group set (protection group set B) is in a protection stable switching state.
In S53, as shown in fig. 1 to 3 and 5, the operating state of the first protection group set (protection group set a) is switched for the second time, and the first protection group set (protection group set a) is switched from the protection instantaneous switching state to the operating stable switching state.
Further, the second switching of the working state of the first protection group set (protection group set a) comprises the following substeps:
in S531, as shown in fig. 1 to 3 and 9, after the partial member protection groups with the failure in the main pipeline have migrated to the second protection group set (protection group set B), the failure detectors of the failure protection groups transmit switching signals to the first protection group set (protection group set a), that is, information that "the failures in the protection group set have all been notified".
In S532, as shown in fig. 1 to 3 and 9, the first protection group set (protection group set a) switches the first switch to connect with the working pipes of the remaining member protection groups, so that the remaining member protection groups in the first protection group set (protection group set a) carry the service through the working pipes, thereby switching the first protection group set (protection group set a) to the working stable switching state.
In S6, as shown in fig. 1 to 4, after the failure of the working pipes of the plurality of failure protection groups is resolved, the plurality of failure protection groups are migrated to the first protection group set (protection group set a).
Further, when the failure of the working pipelines of the plurality of failure protection groups is removed, the plurality of failure protection groups are migrated to the first protection group set (protection group set a), and the method comprises the following substeps:
in S61, as shown in fig. 1 to 3 and 10, when the failure of the working pipe of any of the failure protection groups is resolved, the failure detector of the failure protection group transmits failure resolution information of the failure protection group to the second protection group set (protection group set B).
Further, when the failure of the working pipe of any one of the failure protection groups is removed, the failure detector of the failure protection group transmits the failure removal information of the failure protection group to the second protection group set (protection group set B), and the method comprises the following substeps:
in S611, as shown in fig. 1 to 3, and 11, after the fault of the working pipe of any fault protection group is released, the fault detector of the fault protection group transmits the fault release information to the fault protection group;
in S612, as shown in fig. 1 to 3 and 11, the fault protection group transmits the fault release information to the second protection group set (protection group set B).
In S62, as shown in fig. 1 to 3 and 10, the network device management system migrates the fault protection group to the first protection group set (protection group set a).
In S63, as shown in fig. 1 to 3 and 10, the fault protection group is bound with the first switch, and the fault protection group is connected with the working pipe of the fault protection group through the first switch, so that the fault protection group uses the working pipe to carry the service through the first switch.
In S64, as shown in fig. 1 to 3 and 10, the software state of the fault protection group is updated so that the software state of the fault protection group migrated back to the first protection group set (protection group set a) matches the actual link connection state of the fault protection group.
The present invention maintains two sets of protection groups, a first set of protection groups (protection group set a) and a second set of protection groups (protection group set B). A first protection group set (protection group set A) maintains two states, namely a working stable switching state and a protection instant switching state, the working stable switching state management software and hardware states are consistent, and a protection group of a service is carried by using a working pipeline; the protection instant switching state is that the managed hardware is switched to the protection pipeline to carry the service, and the software still uses the working pipeline to carry the service. When the first protection group set (protection group set A) is in a protection instant switching state, after receiving a message that all working pipeline faults are notified, the first protection group set (protection group set A) is switched to a working stable switching state, and the protection switch is reset to a selected working pipeline to carry services. The second protection group set (protection group set B) is fixedly in a protection stable switching state, and management is in a state of using software and hardware consistent, and is a protection group using a protection pipeline to carry services.
In the above, referring to fig. 1 to 11, a method for fast switching a multi-protection group set according to an embodiment of the present invention is described, so that a problem of false switching of other member protection groups caused by a failure of some member protection groups in the prior art is solved, and a protection switching performance of a protection group set can be effectively ensured.
It should be noted that, in the present specification, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising 8230; \8230;" comprises 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.
Claims (8)
1. A method for fast switching multiple protection group sets is characterized by comprising the following steps:
creating a first protection group set and a second protection group set in an external network equipment management system, and creating a plurality of member protection groups in the first protection group set, wherein any member protection group comprises a working pipeline, a protection pipeline and a fault detector, and the first fault detector is used for detecting fault information of the working pipeline;
creating a first switch in the first set of protection groups;
the plurality of member protection groups are bound with the first switch, and are respectively connected with the working pipelines of the plurality of member protection groups through the first switch;
creating a second switch in the second set of protection groups;
when the working pipelines of part of the member protection groups are in fault, migrating the part of the member protection groups in fault to obtain a plurality of fault protection groups;
and when the faults of the working pipelines of the plurality of fault protection groups are removed, migrating the plurality of fault protection groups to the first protection group set.
2. The method for fast switching of a multi-protection group set according to claim 1, wherein when a working pipeline of a part of said member protection groups fails, a part of said member protection groups that failed is migrated to obtain a plurality of failure protection groups, comprising the sub-steps of:
when part of the working pipelines of the member protection groups have faults, the working state of the first protection group set is switched for the first time;
transferring part of the member protection groups with faults of the main pipeline to the second protection group set to obtain a plurality of fault protection groups;
and switching the working state of the first protection group set for the second time.
3. The method for fast switching multiple protection group sets according to claim 2, wherein when a part of working pipes of the member protection groups fails, the method for switching the working status of the first protection group set for the first time comprises the following sub-steps:
when part of the working pipelines of the member protection group have faults, the fault detector of the member protection group transmits the fault information of the member protection group to the first protection group set;
the first protection group set switches the first selector switch to be communicated with the protection pipelines of the plurality of member protection groups.
4. The method for fast switching of multiple protection group sets according to claim 3, wherein when a part of the working pipelines of the member protection group fails, the failure detector of the member protection group transmits the failure information of the member protection group to the first protection group set, comprising the sub-steps of:
when part of the working pipelines of the member protection group have faults, the fault detector of the member protection group transmits the fault information of the member protection group to the member protection group;
the member protection group transmits the failure information to the first protection group set.
5. The method for rapidly switching a plurality of protection group sets according to claim 2, wherein the step of migrating a part of the member protection groups with a failure in the main pipeline to the second protection group set to obtain a plurality of failure protection groups comprises the following substeps:
updating the software state of the part of the member protection group with the failure of the working pipeline;
the network equipment management system migrates part of the member protection groups with the fault of the working pipeline into the second protection group set to obtain a plurality of fault protection groups;
and binding the plurality of fault protection groups with the second change-over switch, wherein the plurality of fault protection groups are connected with the protection pipelines of the plurality of fault protection groups through the second change-over switch.
6. The method for fast switching multiple protection group sets according to claim 2, wherein the second switching of the working status of the first protection group set comprises the following sub-steps:
after the member protection groups with faults in the main pipeline are completely migrated to the second protection group set, the fault detectors of the plurality of fault protection groups transmit switching signals to the first protection group set;
the first protection group set switches the first switch to be connected with the working pipelines of the rest of the member protection groups.
7. The method for fast switching between multiple protection group sets according to claim 1, wherein after the failure of the working pipes of the plurality of fault protection groups is resolved, the step of migrating the plurality of fault protection groups to the first protection group set comprises the following sub-steps:
when the fault of the working pipeline of any fault protection group is removed, the fault detector of the fault protection group transmits the fault removal information of the fault protection group to the second protection group set;
the network device management system migrating the failsafe group to the first set of protection groups;
binding the fault protection group with the first switch, wherein the fault protection group is connected with a working pipeline of the fault protection group through the first switch;
updating a software state of the failsafe group.
8. The method for fast switching between multiple protection group sets according to claim 7, wherein when the failure of the working pipe of any one of the protection groups is removed, the failure detector of the protection group transmits the failure removal information of the protection group to the second protection group set, and the method comprises the following sub-steps:
when the fault of the working pipeline of any fault protection group is removed, the fault detector of the fault protection group transmits the fault removal information to the fault protection group;
the fault protection group passes the fault resolution information to the second set of protection groups.
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