CN115150216A - Traffic forwarding system and method and control plane equipment of vBRAS - Google Patents
Traffic forwarding system and method and control plane equipment of vBRAS Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2854—Wide area networks, e.g. public data networks
- H04L12/2856—Access arrangements, e.g. Internet access
- H04L12/2869—Operational details of access network equipments
- H04L12/287—Remote access server, e.g. BRAS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery
Abstract
The utility model provides a flow forwarding system, method and control plane equipment of vBRAS, which relates to the communication field, the system comprises: a control plane device of a vBRAS configured to: establishing a first routing table item and a plurality of second routing table items which are in one-to-one correspondence with a plurality of forwarding plane devices of the vBRAS, wherein the first routing table item comprises first routing information of a first user, and each second routing table item comprises second routing information of a second user; issuing the first routing table entry to each forwarding surface device in the plurality of forwarding surface devices; each second routing table item is issued to forwarding plane equipment corresponding to the second routing table item; and the plurality of forwarding plane devices, each forwarding device configured to: forwarding the flow from the first user according to the first routing information; and forwarding the flow of the second user in the second routing table item according to the second routing information in the corresponding second routing table item.
Description
Technical Field
The present disclosure relates to the field of communications, and in particular, to a traffic forwarding system, method, and control plane device of a virtualized broadband access server (vbars).
Background
In the related art, when the control plane device of the vbars issues a plurality of routing table entries corresponding to a plurality of forwarding plane devices one to one, to the plurality of forwarding plane devices, there are two different issuing manners.
In the first issuing method, the control plane device issues each routing table entry to each forwarding plane device no matter which forwarding plane device the routing table entry corresponds to.
In the second issuing mode, the control plane device issues each routing table entry to the corresponding forwarding plane device.
Disclosure of Invention
The inventor has noticed that in the first issuing method, since each forwarding plane device needs to receive all the routing table entries, the hardware resource consumption of the forwarding plane device is too large.
In the second issuing method, when one forwarding plane device fails, the control plane device needs to re-issue the routing table entry corresponding to the forwarding plane device to other forwarding plane devices, which reduces the response speed of the failure, so that the user perceives flow interruption, and the user experience is reduced.
In view of this, the embodiment of the present disclosure provides the following technical solutions, which can give consideration to both hardware resources and user experience of the forwarding plane device.
According to an aspect of the embodiments of the present disclosure, there is provided a traffic forwarding system, including: a control plane device of a virtualized broadband access server, vBRAS, configured to: establishing a first routing table item and a plurality of second routing table items which are in one-to-one correspondence with a plurality of forwarding plane devices of the vBRAS, wherein the first routing table item comprises first routing information of a first user, and each second routing table item comprises second routing information of a second user; issuing the first routing table entry to each forwarding surface device in the plurality of forwarding surface devices; each second routing table entry is issued to forwarding plane equipment corresponding to the second routing table entry; and the plurality of forwarding plane devices, each forwarding device configured to: forwarding the flow from the first user according to the first routing information; and forwarding the flow of the second user in the second routing table item according to the second routing information in the corresponding second routing table item.
In some embodiments, the first user comprises a first portion of users; a first forwarding plane device of the plurality of forwarding plane devices is configured to: forwarding the traffic from the first part of users according to the first routing information of the first part of users; the control plane device is configured to: under the condition that the first forwarding plane equipment fails, sending an indication message to second forwarding plane equipment in the plurality of forwarding plane equipment; the second forwarding plane device is configured to: and responding to the indication message, and forwarding the traffic from the first part of users according to the first routing information of the first part of users.
In some embodiments, the traffic forwarding system further comprises: a Software Defined Network (SDN) controller configured to: for a plurality of users accessing a vBRAS, determining characteristic parameters of each user based on characteristic information of the user, wherein the characteristic information of each user comprises first characteristic sub-information related to faults experienced by the user; and determining the users with the characteristic parameters larger than a preset threshold value as first users.
In some embodiments, said first characteristic sub-information of each user comprises the number of total failures experienced by the user between a first time and a second time subsequent to said first time, said characteristic parameter increasing with increasing said number.
In some embodiments, the first characteristic sub-information of each user further includes a third time instant at which each fault occurs, the characteristic parameter decreasing with an increase in a time interval between the third time instant and the second time instant.
In some embodiments, the SDN controller determines the characteristic parameters for each user based on the following expression:
wherein M is a characteristic parameter of the user, n is the number of times of all faults experienced by the user between the first time and the second time, t n Is the time interval between the third time instant at which each fault occurs and the second time instant.
In some embodiments, the feature information of each user further includes a feature value representing the importance of the user, the feature value increasing as the importance of the user increases.
In some embodiments, the feature value of each subscriber is determined based on second feature sub-information related to the importance of the subscriber, the second feature sub-information including at least one of a subscriber type and a charging method.
In some embodiments, the SDN controller determines the characteristic parameters for each user based on the following expression:
wherein M is a characteristic parameter of the user, n is the number of times of all faults experienced by the user between a first time and a second time after the first time, t n And V is the characteristic value of the user for the time interval between the third time and the second time of each fault.
According to another aspect of the embodiments of the present disclosure, a traffic forwarding method is provided, including: a control plane device of a virtualized broadband access server vBRAS establishes a first routing table entry and a plurality of second routing table entries corresponding to a plurality of forwarding plane devices of the vBRAS one by one, wherein the first routing table entry comprises first routing information of a first user, and each second routing table entry comprises second routing information of a second user; the control plane device sends the first routing table item to each forwarding plane device in the multiple forwarding plane devices, so that each forwarding plane device forwards the traffic from the first user according to the first routing information; and the control surface equipment issues each second routing table item to forwarding surface equipment corresponding to the second routing table item, so that each forwarding surface equipment forwards the flow of the second user in the second routing table item according to the second routing information in the corresponding second routing table item.
In some embodiments, the first user comprises a first portion of users, traffic of the first portion of users being forwarded by a first forwarding plane device of the plurality of forwarding plane devices; the method further comprises the following steps: and under the condition that the first forwarding plane equipment fails, controlling to send an indication message to a second forwarding plane equipment in the plurality of forwarding plane equipment, so that the traffic of the first part of users is forwarded by the second forwarding plane equipment.
In some embodiments, the first user is determined according to the following: for a plurality of users accessing a vBRAS, determining characteristic parameters of each user based on characteristic information of the user, wherein the characteristic information of each user comprises first characteristic sub-information related to faults experienced by the user; and determining the users with the characteristic parameters larger than a preset threshold value as first users.
In some embodiments, said first characteristic sub-information of each user comprises the number of total failures experienced by the user between a first time and a second time subsequent to said first time, said characteristic parameter increasing with increasing said number.
In some embodiments, the first characteristic sub-information of each user further includes a third time instant at which each fault occurs, and the characteristic parameter decreases as a time interval between the third time instant and the second time instant increases.
In some embodiments, the characteristic parameter for each user is determined based on the following expression:
wherein M is the characteristic parameter of the user, and n is the user's characteristic parameter at the first timeNumber of total failures experienced between the first and second time instants, t n Is the time interval between the third time instant and the second time instant at which each fault occurs.
In some embodiments, the feature information of each user further includes a feature value representing the importance of the user, the feature value increasing as the importance of the user increases.
In some embodiments, the feature value of each subscriber is determined based on second feature sub-information related to importance of the subscriber, the second feature sub-information including at least one of subscriber type and charging method.
In some embodiments, the characteristic parameter for each user is determined based on the following expression:
wherein M is a characteristic parameter of the user, n is the number of times of all faults experienced by the user between a first time and a second time after the first time, t n And V is the characteristic value of the user for the time interval between the third time and the second time of each fault.
In some embodiments, the first user of the plurality of users is determined by a software defined network, SDN, controller.
According to another aspect of the disclosed embodiments, there is provided a control plane device for virtualizing a broadband access server vbars, including: the establishing module is configured to establish a first routing table entry and a plurality of second routing table entries corresponding to the forwarding plane devices of the vbars in a one-to-one manner, wherein the first routing table entry comprises first routing information of a first user, and each second routing table entry comprises second routing information of a second user; an issuing module configured to: issuing the first routing table entry to each forwarding surface device in the multiple forwarding surface devices, so that each forwarding surface device forwards the traffic from the first user according to the first routing information; and issuing each second routing table item to the forwarding plane device corresponding to the second routing table item, so that each forwarding plane device forwards the traffic of the second user in the second routing table item according to the second routing information in the corresponding second routing table item.
According to another aspect of the embodiments of the present disclosure, there is provided a control plane device for virtualizing a broadband access server, vbars, including: a memory; and a processor coupled to the memory, the processor configured to perform the method of any of the embodiments described above based on instructions stored in the memory.
According to yet another aspect of embodiments of the present disclosure, there is provided a computer-readable storage medium comprising computer-executable instructions that, when executed by one or more processors, cause the one or more processors to perform the method of any one of the above embodiments.
In the embodiment of the present disclosure, a control plane device of a vbars differentially establishes a first routing table entry and a plurality of second routing table entries corresponding to a plurality of forwarding plane devices one to one for a first user and a second user. On one hand, the second routing table entry is issued to the corresponding forwarding plane device, so that the consumption of hardware resources of the forwarding plane device can be reduced, and the resource utilization rate and the session connection quantity of the forwarding plane device can be improved. On the other hand, the first routing table entry is issued to each forwarding plane device, so that under the condition that one forwarding plane device fails, the control plane device does not need to issue the first routing table entry to other forwarding plane devices, the failure response speed can be improved, and the first user cannot perceive flow interruption. Therefore, the user experience of the first user can be guaranteed, and the satisfaction degree of the first user can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a flow diagram of a traffic forwarding method according to some embodiments of the present disclosure;
fig. 2 is a flow diagram of a traffic forwarding method according to further embodiments of the present disclosure;
fig. 3 is a schematic structural diagram of a traffic forwarding system according to some embodiments of the present disclosure;
FIG. 4 is a block diagram of a traffic forwarding system according to further embodiments of the present disclosure;
fig. 5 is a schematic structural diagram of a control plane device of a vbars in accordance with some embodiments of the present disclosure;
fig. 6 is a schematic structural diagram of a control plane device of a vbars according to further embodiments of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
The relative arrangement of parts and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.
Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Fig. 1 is a flow diagram of a traffic forwarding method according to some embodiments of the present disclosure.
As shown in fig. 1, the traffic forwarding method includes steps 102 to 106.
In step 102, a control plane device of a vBRAS establishes a first routing table entry and a plurality of second routing table entries corresponding one-to-one to a plurality of forwarding plane devices of the vBRAS.
Here, the first routing table entries include first routing information of the first user, and each of the second routing table entries includes second routing information of the second user.
For example, the first routing information and the second routing information may include a destination address, a netmask, an output interface, a next hop address, and the like.
In step 104, the control plane device issues the first routing table entry to each forwarding plane device of the multiple forwarding plane devices.
Here, each forwarding plane device is capable of forwarding traffic from the first user according to the first routing information after receiving the first routing entry.
In step 106, the control plane device issues each second routing table entry to the forwarding plane device corresponding to the second routing table entry.
Here, after receiving the corresponding second routing table entry, each forwarding plane device can forward the traffic of the second user in the second routing table entry according to the second routing information in the second routing table entry.
In some embodiments, the first user comprises a first portion of users. The traffic of the first part of users is forwarded by a first forwarding plane device of the plurality of forwarding plane devices. And under the condition that the first forwarding plane equipment fails, the control plane equipment sends an indication message to a second forwarding plane equipment in the multiple forwarding plane equipment, so that the traffic of the first part of users is forwarded by the second forwarding plane equipment.
Because the time required for the control plane device to send the indication message to the forwarding plane device is much shorter than the time required for the control plane device to send the first routing information of the first part of users to the forwarding plane device, the fault response speed is greatly increased.
In the above embodiment, the control plane device of the vrabs differentially establishes, for the first user and the second user, the first routing table entry and the plurality of second routing table entries corresponding to the plurality of forwarding plane devices one to one. On one hand, by issuing the second routing table entry to the corresponding forwarding plane device, the consumption of hardware resources of the forwarding plane device can be reduced, and the resource utilization rate and the session connection quantity of the forwarding plane device can be improved. On the other hand, the first routing table entry is issued to each forwarding plane device, so that under the condition that one forwarding plane device fails, the control plane device does not need to issue the first routing table entry to other forwarding plane devices, the failure response speed can be improved, and the first user cannot perceive flow interruption. Therefore, the user experience of the first user can be guaranteed, and the satisfaction degree of the first user can be improved.
Fig. 2 is a flow chart of a traffic forwarding method according to further embodiments of the present disclosure.
As shown in fig. 2, before step 102 to step 106 in fig. 1, the traffic forwarding method further includes step 202 to step 204.
In step 202, for a plurality of users accessing a vbars, a characteristic parameter of each user is determined based on the characteristic information of the user.
In step 204, the user with the characteristic parameter larger than the preset threshold value in the plurality of users is determined as the first user.
Some specific embodiments of determining the characteristic parameters of each user will be given below.
In some embodiments, the characteristic information of each user may include first characteristic sub-information relating to a fault experienced by the user.
In some embodiments, the first characteristic sub-information of each user may include a number of total failures experienced by the user between a first time and a second time after the first time. The characteristic parameter of each user increases as the number of total failures experienced by the user between the first and second moments in time increases.
For example, between the first time and the second time, the number of total failures experienced by the user 1 is 2, and the number of total failures experienced by the user 2 is 5, and then the characteristic parameter of the user 1 is smaller than that of the user 2.
In this way, by determining the user with the characteristic parameter greater than the preset threshold as the first user, the user experience of the user with more failures can be guaranteed, and thus the satisfaction of the user can be improved.
In some embodiments, the first characteristic sub-information of each user may include a third time instant at which each fault experienced between the first time instant and the second time instant occurs. The characteristic parameter of each user may decrease as the time interval between the third time instant and the second time instant increases.
In some embodiments, the second time may be a time at which the determination of the first user is started.
For example, between the first time and the second time, the number of all failures experienced by the user 3 and the user 4 is 1. The time interval between the third moment and the second moment of occurrence of the fault experienced by the user 3 is 10 minutes, and the time interval between the third moment and the second moment of occurrence of the fault experienced by the user 4 is 20 minutes, then the characteristic parameter of the user 3 is greater than the characteristic parameter of the user 4.
In this way, by determining the user whose characteristic parameter is greater than the preset threshold as the first user, it is possible to avoid that the user who has recently experienced the failure experiences the flow interruption again due to the equipment failure in a short time. Therefore, the user experience of the part of users can be guaranteed, and the satisfaction degree of the part of users is improved.
In some embodiments, the first characteristic sub-information of each user may include the number of total failures experienced by the user between the first time and a second time after the first time, and also include a third time at which each failure experienced between the first time and the second time occurred.
Therefore, the user with the characteristic parameter larger than the preset threshold value is determined as the first user, so that the user experience of the user with more faults can be guaranteed, and the user experience of the user who has recently experienced faults can also be guaranteed.
For example, in the case where the feature information of each user includes only the above-described first feature sub-information, the feature parameter of each user may be determined based on the following expression:
wherein M is a characteristic parameter of the user, n is the number of times of all faults experienced by the user between the first time and the second time, t n The time interval between the third time and the second time for each fault occurrence.
The following description will take, as an example, the user 1 who has experienced 2 failures between the first time and the second time. Assuming that the time interval between the third time and the second time of the first fault occurrence is 5 days, and the time interval between the third time and the second time of the second fault occurrence is 2 days, the characteristic parameter M of the user 5 may be determined to be
It should be understood that the above is merely exemplary and that t is n The unit of (a) is expressed as a day. In application, t n The unit of (a) may also be other various time units. For a plurality of users accessing the vbars, it is only necessary to ensure that the same time unit is used in determining the characteristic parameter of each user.
In other embodiments, the characteristic information of each user may include a characteristic value indicating the importance of the user. The feature value of each user may increase as the importance of the user increases. It should be understood that the user's characteristic values may embody user value.
For example, the value range of the feature value may be set to (1, 10), and then the feature value of the user with higher importance is closer to 10.
Therefore, the user with the characteristic parameter larger than the preset threshold value is determined as the first user, the user experience of the user with high importance can be guaranteed, and the satisfaction degree of the part of users is improved.
In some embodiments, the feature value of each user is determined based on second feature sub-information related to the importance of the user. The second characteristic sub information of each subscriber may include at least one of a subscriber type and a charging method.
In terms of user types, for example, the user types may include "personal" and "business". The feature value of a user of the user type "business" may be larger than the feature value of a user of the user type "personal".
As for the charging means, for example, the charging means may include a charging price. The characteristic value of the user with a higher charging price may be greater than the characteristic value of the user with a lower charging price.
In still other embodiments, the feature information of each user may include the first feature sub-information and the feature value.
Therefore, the user with the characteristic parameter larger than the preset threshold value is determined as the first user, so that the user experience of the user who has experienced the fault can be guaranteed, and the user experience of the user with high importance can also be guaranteed.
For example, in the case where the feature information of each user includes the above-described first feature sub information and the above-described feature value, the feature parameter of each user may be determined based on the following expression:
where M is a characteristic parameter of the user, n is the number of total failures experienced by the user between a first time and a second time after the first time, t n For the time interval between the third moment and the second moment of each fault occurrence, V isThe characteristic value of the user.
In some embodiments, the first user is determined by a Software Defined Network (SDN) controller. That is, the above steps 202 to 204 may be performed by the SDN controller. As such, real-time determination and updating of the first user may be enabled depending on the high computational power of the SDN controller.
For example, the control plane device may send feature information of a plurality of users accessing the vbars to the SDN controller, so that the SDN controller performs the above steps 202 and 204. The SDN controller may then return the determination of the first user obtained from step 204 to the control plane device to cause the control plane device to perform steps 102 to 106.
For another example, the control plane device may establish an initial routing table entry for a plurality of subscribers accessing the vbrs. The initial routing table entry includes routing information for a plurality of users. The control plane device may then send feature information of the plurality of users to the SDN controller. The SDN controller may perform steps 202 and 204 to determine a first user of the plurality of users and return the determination of the first user to the control plane device. And the control plane equipment establishes a first routing table item based on the returned determination result, and removes the first routing information of the first users from the initial routing table item, thereby obtaining a plurality of second routing table items. The control plane device then performs steps 104 through 106.
It should be appreciated that the determination of the first user may be constantly changing. For example, in the first determination result, the user 1 is not determined as the first user. In the second determination result, the user 1 may be determined as the first user.
Fig. 3 is a schematic block diagram of a traffic forwarding system according to some embodiments of the present disclosure.
As shown in fig. 3, the traffic forwarding system comprises a control plane device 301 of the vbars and a plurality of forwarding plane devices 302 (three are schematically shown in fig. 3).
The control plane device 301 is configured to: establishing a first routing table entry and a plurality of second routing table entries corresponding to the forwarding plane devices 302 of the vBRAS one by one, wherein the first routing table entry comprises first routing information of a first user, and each second routing table entry comprises second routing information of a second user; issuing the first routing table entry to each forwarding plane device 302 in the plurality of forwarding plane devices 302; and issuing each second routing table entry to the forwarding plane device 302 corresponding to the second routing table entry.
Each forwarding plane device 302 is configured to: forwarding the flow from the first user according to the first routing information; and forwarding the traffic of the second user in the second routing table item according to the second routing information in the corresponding second routing table item.
Fig. 4 is a block diagram of a traffic forwarding system according to further embodiments of the present disclosure.
As shown in fig. 4, the traffic forwarding system includes an SDN controller 401 in addition to the control plane device 301 and the plurality of forwarding plane devices 302 shown in fig. 3.
In some embodiments, the control plane device 301 shown in FIG. 4 may be the structure shown in FIG. 5 or FIG. 6. The following description is made with reference to fig. 5 and 6.
Fig. 5 is a schematic structural diagram of a control plane device of a vbars in accordance with some embodiments of the present disclosure.
As shown in fig. 5, the control plane apparatus includes an establishment module 501 and a distribution module 502.
The setup module 501 is configured to: and establishing a first routing table item and a plurality of second routing table items which are in one-to-one correspondence with a plurality of forwarding plane devices of the vBRAS. The first routing table entry includes first routing information for the first user. Each second routing table entry includes second routing information for a second user.
The issuing module 502 is configured to: issuing the first routing table entry to each forwarding surface device in the multiple forwarding surface devices, so that each forwarding surface device forwards the traffic from the first user according to the first routing information; and issuing each second routing table item to the forwarding plane equipment corresponding to the second routing table item, so that each forwarding plane equipment forwards the traffic of the second user in the second routing table item according to the second routing information in the corresponding second routing table item.
Fig. 6 is a schematic structural diagram of a control plane device of a vbars according to further embodiments of the present disclosure.
As shown in fig. 6, the control plane device 600 includes a memory 601 and a processor 602 coupled to the memory 601, and the processor 602 is configured to execute the traffic forwarding method according to any of the foregoing embodiments based on instructions stored in the memory 601.
The memory 601 may include, for example, system memory, fixed non-volatile storage media, and the like. The system memory may store, for example, an operating system, application programs, a Boot Loader (Boot Loader), and other programs.
The control plane apparatus 600 may further include an input-output interface 603, a network interface 604, a storage interface 605, and the like. The interfaces 603, 604, 605 and the memory 601 and the processor 602 may be connected by a bus 606, for example. The input/output interface 603 provides a connection interface for input/output devices such as a display, a mouse, a keyboard, and a touch screen. The network interface 604 provides a connection interface for various networking devices. The storage interface 605 provides a connection interface for external storage devices such as an SD card and a usb disk.
The disclosed embodiments also provide a computer-readable storage medium having stored thereon computer program instructions, which when executed by a processor, implement the method of any of the above embodiments.
Thus, various embodiments of the present disclosure have been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.
In the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts in the embodiments are referred to each other. For the embodiments of the traffic forwarding system and the control plane device, since they basically correspond to the embodiments of the method, the description is relatively simple, and for the relevant points, reference may be made to the partial description of the embodiments of the method.
In addition, in the description of the present disclosure, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or order.
As will be appreciated by one skilled in the art, embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the disclosure. It will be understood that the functions specified in one or more of the flows in the flowcharts and/or one or more of the blocks in the block diagrams can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that various changes may be made in the above embodiments or equivalents may be substituted for elements thereof without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.
Claims (22)
1. A traffic forwarding system comprising:
a control plane device of a virtualized broadband access server, vBRAS, configured to: establishing a first routing table item and a plurality of second routing table items which are in one-to-one correspondence with a plurality of forwarding plane devices of the vBRAS, wherein the first routing table item comprises first routing information of a first user, and each second routing table item comprises second routing information of a second user; issuing the first routing table entry to each forwarding surface device in the plurality of forwarding surface devices; each second routing table item is issued to forwarding plane equipment corresponding to the second routing table item; and
the plurality of forwarding plane devices, each forwarding device configured to: forwarding the flow from the first user according to the first routing information; and forwarding the flow of the second user in the second routing table item according to the second routing information in the corresponding second routing table item.
2. The system of claim 1, wherein the first user comprises a first portion of users;
a first forwarding plane device of the plurality of forwarding plane devices is configured to: forwarding the traffic from the first part of users according to the first routing information of the first part of users;
the control plane device is configured to: under the condition that the first forwarding plane equipment fails, sending an indication message to second forwarding plane equipment in the plurality of forwarding plane equipment;
the second forwarding plane device is configured to: and responding to the indication message, and forwarding the traffic from the first part of users according to the first routing information of the first part of users.
3. The system of claim 1, further comprising:
a Software Defined Network (SDN) controller configured to: for a plurality of users accessing a vBRAS, determining characteristic parameters of each user based on characteristic information of the user, wherein the characteristic information of each user comprises first characteristic sub-information related to faults experienced by the user; and determining the users with the characteristic parameters larger than a preset threshold value as first users.
4. The system of claim 3, wherein the first characteristic sub-information for each user includes a number of total failures experienced by the user between a first time and a second time subsequent to the first time, the characteristic parameter increasing with the number of times.
5. The system of claim 4, wherein the first characteristic sub-information of each user further comprises a third time instant at which each fault occurs, the characteristic parameter decreasing with an increasing time interval between the third time instant and the second time instant.
6. The system of claim 5, wherein SDN controller determines the characteristic parameters for each user based on the following expression:
wherein M is the characteristic parameter of the user, n is the number of times of all faults experienced by the user between the first time and the second time, t n Is the time interval between the third time instant at which each fault occurs and the second time instant.
7. The system of claim 3, wherein the feature information of each user further comprises a feature value representing the importance of the user, the feature value increasing as the importance of the user increases.
8. The system of claim 7, wherein the feature value of each subscriber is determined based on second feature sub-information related to importance of the subscriber, the second feature sub-information including at least one of subscriber type and billing method.
9. The system of claim 7, wherein an SDN controller determines the characteristic parameters for each user based on the following expression:
wherein M is a characteristic parameter of the user, n is the number of times of all faults experienced by the user between a first time and a second time after the first time, t n And V is the characteristic value of the user for the time interval between the third time and the second time of each fault.
10. A traffic forwarding method, comprising:
a control plane device of a virtualized broadband access server vBRAS establishes a first routing table entry and a plurality of second routing table entries corresponding to a plurality of forwarding plane devices of the vBRAS one by one, wherein the first routing table entry comprises first routing information of a first user, and each second routing table entry comprises second routing information of a second user;
the control plane device sends the first routing table item to each forwarding plane device in the multiple forwarding plane devices, so that each forwarding plane device forwards the traffic from the first user according to the first routing information;
and the control surface equipment issues each second routing table item to the forwarding surface equipment corresponding to the second routing table item, so that each forwarding surface equipment forwards the traffic of the second user in the second routing table item according to the second routing information in the corresponding second routing table item.
11. The method of claim 10, wherein the first user comprises a first portion of users, traffic of the first portion of users being forwarded by a first forwarding plane device of the plurality of forwarding plane devices;
the method further comprises the following steps:
and under the condition that the first forwarding plane equipment fails, the control plane equipment sends an indication message to a second forwarding plane equipment in the plurality of forwarding plane equipment, so that the traffic of the first part of users is forwarded by the second forwarding plane equipment.
12. The method of claim 10, wherein the first user is determined according to:
for a plurality of users accessing a vBRAS, determining characteristic parameters of each user based on characteristic information of the user, wherein the characteristic information of each user comprises first characteristic sub-information related to faults experienced by the user;
and determining the users with the characteristic parameters larger than a preset threshold value as first users.
13. The method according to claim 12, wherein the first characteristic sub-information of each user includes the number of total failures experienced by the user between a first time and a second time after the first time, the characteristic parameter increasing with the number.
14. The method of claim 13, wherein the first characteristic sub-information of each user further includes a third time instant at which each fault occurs, the characteristic parameter decreasing with an increase in a time interval between the third time instant and the second time instant.
15. The method of claim 14, wherein the characteristic parameter for each user is determined based on the following expression:
wherein M is the characteristic parameter of the user, n is the number of times of all faults experienced by the user between the first time and the second time, t n Is the time interval between the third time instant and the second time instant at which each fault occurs.
16. The method of claim 12, wherein the feature information of each user further comprises a feature value representing the importance of the user, the feature value increasing as the importance of the user increases.
17. The method of claim 16, wherein the feature value of each subscriber is determined based on second feature sub-information related to importance of the subscriber, the second feature sub-information including at least one of subscriber type and charging method.
18. The method of claim 16, wherein the characteristic parameter for each user is determined based on the following expression:
wherein M is a characteristic parameter of the user, n is the number of times of all faults experienced by the user between a first time and a second time after the first time, t n And V is the characteristic value of the user for the time interval between the third time and the second time of each fault.
19. The method of any one of claims 12-18, wherein the first user of the plurality of users is determined by a Software Defined Network (SDN) controller.
20. A control plane device of a virtualized broadband access server, vbars, comprising:
the establishing module is configured to establish a first routing table entry and a plurality of second routing table entries corresponding to the forwarding plane devices of the vbars in a one-to-one manner, wherein the first routing table entry comprises first routing information of a first user, and each second routing table entry comprises second routing information of a second user;
a delivery module configured to: issuing the first routing table entry to each forwarding surface device in the multiple forwarding surface devices, so that each forwarding surface device forwards the traffic from the first user according to the first routing information; and issuing each second routing table item to the forwarding plane equipment corresponding to the second routing table item, so that each forwarding plane equipment forwards the traffic of the second user in the second routing table item according to the second routing information in the corresponding second routing table item.
21. A control plane device of a virtualized broadband access server, vbars, comprising:
a memory; and
a processor coupled to the memory, the processor configured to perform the method of claim 10 or 11 based on instructions stored in the memory.
22. A computer-readable storage medium comprising computer-executable instructions that, when executed by one or more processors, cause the one or more processors to perform the method of any one of claims 10-19.
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