CN113014493B - Route broadcasting method and device - Google Patents
Route broadcasting method and device Download PDFInfo
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- CN113014493B CN113014493B CN201911322255.9A CN201911322255A CN113014493B CN 113014493 B CN113014493 B CN 113014493B CN 201911322255 A CN201911322255 A CN 201911322255A CN 113014493 B CN113014493 B CN 113014493B
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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
- H04L45/16—Multipoint routing
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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
- H04L45/02—Topology update or discovery
- H04L45/033—Topology update or discovery by updating distance vector protocols
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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
- H04L45/54—Organization of routing tables
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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
- H04L45/74—Address processing for routing
- H04L45/745—Address table lookup; Address filtering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/12—Avoiding congestion; Recovering from congestion
Abstract
The invention discloses a method and a device for broadcasting a route, wherein the method comprises the following steps: decomposing an original route received from source equipment according to a preset configuration rule to obtain a plurality of derived routes with granularity smaller than that of the original route; and broadcasting the original route and the derived route to the target equipment. According to the method, the original route received from the source equipment is decomposed according to the preset configuration rule, the plurality of derived routes with the granularity smaller than that of the original route are obtained, the original route and the derived routes are sent to the target equipment, the flow direction of data packets flowing from an external network can be changed, and the flow is guided to preferentially flow to the specified target equipment, so that the flow received by other equipment interfaces is reduced, network blockage is avoided, manual operation of workers is not needed in the whole process, time and labor are saved, and the working efficiency is higher.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for broadcasting a route.
Background
Access to the IP network is addressed based on an IP routing table that is dynamically updated as network conditions change. At present, the IP network networking of telecommunication operators uses BGP routing Protocol for propagation of IP routing tables between networks, and BGP (Border Gateway Protocol) routing of IP addresses in the network is generated at each service router, and the BGP routing is propagated in the network through route reflectors. All network devices broadcast in-network service routes accessed by the network devices to route reflectors, BGP broadcast route tables are formed in the route reflectors, network boundary routers broadcast in-network routes received from the route reflectors to external interconnected networks and receive flow, and in order to avoid network congestion caused by excessive flow received by a certain boundary router, in the prior art, workers log on a plurality of boundary routers to manually adjust the boundary routers and change the number and granularity of the external broadcast routes, so that the size of introduced flow is changed, and the flow of data packets received by the boundary routers with excessive flow is reduced.
The inventor finds that the prior art has at least the following problems:
the method adopted by the prior art needs manual operation of workers, wastes time and labor and has low operation efficiency.
Disclosure of Invention
The embodiment of the invention provides a route broadcasting method, which is used for reducing the flow received by other equipment interfaces in a time-saving and labor-saving manner and avoiding network blockage, and comprises the following steps:
decomposing the original route according to a preset configuration rule to obtain a plurality of derived routes with granularity smaller than that of the original route;
and broadcasting the original route and the derived route received from the source device to the target device.
Optionally, broadcasting the original route and the derived route to the target device includes:
sending the original route and the derived route to a BGP broadcast route table;
updating or canceling the original route and the derived route in the BGP broadcast routing table;
and sending the updated original route and the derivative route to the target equipment.
Optionally, updating the original route and the derivative route in the BGP broadcast routing table includes:
judging whether the BGP broadcast routing table has the original routing and the derived routing;
and updating the original route and the derived route in the BGP broadcast routing table according to the judgment result.
Optionally, updating the original route and the derived route in the BGP broadcast routing table according to the determination result includes:
acquiring a judgment result, if the judgment result is negative, adding the original route and the derived route into a BGP broadcast route table, and establishing an association relation between the original route and the derived route;
otherwise, updating the original route and the derived route in the BGP broadcast routing table.
Optionally, updating the original route and the derived route in the BGP broadcast routing table according to the determination result, further including:
in the process of updating the original route and the derived route in the BGP broadcast route table, if the sent original route is the same as the existing derived route in the BGP broadcast route table, the association relationship between the existing derived route and the original route in the BGP broadcast route table is released, and the route category of the existing derived route is updated to the original route;
the sent derivative route is cleared if the sent derivative route is the same as the existing original route in the BGP advertised route table.
The embodiment of the present invention further provides a route broadcasting device, which is used for reducing the flow received by other device interfaces in a time-saving and labor-saving manner, and avoiding network congestion, and the device includes:
the route decomposition module is used for decomposing the original route according to a preset configuration rule and obtaining a plurality of derived routes with granularity smaller than that of the original route;
and the route broadcasting module is used for broadcasting the original route and the derived route from the source equipment to the target equipment.
Optionally, the route broadcasting module is further configured to:
sending the original route and the derived route from the source equipment to a BGP broadcast routing table;
updating or canceling the original route and the derived route in the BGP broadcast routing table;
and sending the updated original route and the derivative route to the target equipment.
Optionally, the route broadcasting module is further configured to:
judging whether the BGP broadcast routing table has the original routing and the derived routing;
and updating the original route and the derived route in the BGP broadcast routing table according to the judgment result.
Optionally, the route broadcasting module is further configured to:
acquiring a judgment result, if the judgment result is negative, adding the sent original route and the derived route into a BGP broadcast route table, and establishing an association relation between the original route and the derived route;
otherwise, updating the original route and the derived route in the BGP broadcast routing table.
Optionally, the route broadcasting module is further configured to:
in the process of updating the original route and the derived route in the BGP broadcast route table, if the sent original route is the same as the existing derived route in the BGP broadcast route table, the association relationship between the existing derived route and the original route in the BGP broadcast route table is released, and the route category of the existing derived route is updated to the original route;
the sent derivative route is cleared if the sent derivative route is the same as the existing original route in the BGP advertised route table.
The embodiment of the present invention further provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the method when executing the computer program.
An embodiment of the present invention further provides a computer-readable storage medium, in which a computer program for executing the above method is stored.
In the embodiment of the invention, the original route received from the source equipment is decomposed according to the preset configuration rule, a plurality of derived routes with the granularity smaller than that of the original route are obtained, and the original route and the derived routes are broadcasted to the target equipment, so that the flow direction of a data packet flowing from an external network can be changed, the flow preferentially flows to the target equipment, the flow received by other equipment interfaces is reduced, the network blockage is avoided, the whole process does not need manual operation of a worker, the time and the labor are saved, and the working efficiency is higher.
Drawings
In order to more clearly illustrate the embodiments of the present invention 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 invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts. In the drawings:
fig. 1 is a flowchart of a route broadcasting method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a route distribution device in an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
Access to the IP network is addressed based on an IP routing table that is dynamically updated as network conditions change. At present, the IP network networking of the telecom operator uses BGP routing Protocol for propagation of IP routing tables between networks, and BGP (Border Gateway Protocol) routes of IP addresses in the network are generated in each service router and propagated in the network through a route reflector. All network devices broadcast in-network service routes accessed by the network devices to route reflectors, a BGP broadcast route table is formed in the route reflectors, network boundary routers broadcast in-network routes received from the route reflectors to external interconnected networks, and receive flow of data packets fed back from the external networks, so that in order to avoid network congestion caused by excessive flow received by a certain boundary router, in the prior art, workers log on a plurality of boundary routers to manually adjust the boundary routers, and the number and granularity of the external broadcast routes are changed, so that the size of introduced flow is changed.
It should be noted that, according to the routing distribution rule commonly used in the art, the smaller the routing granularity is, the higher the priority is, that is, the traffic flow of the data packet fed back from the external network will be preferentially biased to the router with the small granularity.
Fig. 1 is a flowchart of a route broadcasting method according to an embodiment of the present invention, and as shown in fig. 1, the method includes:
In this embodiment, for the preset configuration rule, the operation code is, for example, gentetailroute:
route-policy papermit 10；
match < Condition >;
gendetailroute masklen+1。
the route-policy parameter 10 is a screening process of an original route, the match < condition > is a matching condition, the generic route is an operation code for performing a decomposition operation, and the mask +1 is a configuration parameter, and the granularity of the route can be changed by changing the configuration parameter. And the factor mainly reflecting the size of the routing granularity is the mask in the routing, for example, a route with a/24 mask, when the fine routing mask increment is set to +1, 2 routes with/25 masks, 192.168.1.0/24- >192.168.1.0/25,192.168.1.128/25, are additionally split based on the original routing address range. In the decomposition process, the route attributes of the original route are copied to each of the derived routes.
The processing rules for the derived route are as follows: the derived route cannot exist independently, but exists attached to the parent route. Clearing a father route, following and clearing a derived route, changing attributes of the father route and following and changing the attributes of the derived route;
the derived routes are only present in the BGP broadcast routing tables for each neighbor, and are not present in the local routing tables. The generation operation of the derived route is only suitable for the route updating of the outward direction interacted by the BGP routing protocol and takes effect when the route is broadcasted to the outside; if the policy is applied in the inward direction of BGP routing protocol interaction, ignoring the derived route generation operation;
the priority of the derived route is lower than that of the conventional route, when the prefix of the derived route of one conventional route exists in the conventional routing table at the same time, the derived route cannot be loaded into the routing table, and the generated derived route is covered by the conventional route when the same conventional route appears.
In an embodiment, step 102 comprises:
and sending the original route and the derived route to a BGP broadcast routing table.
And updating or canceling the original route and the derived route in the BGP broadcast routing table.
In specific implementation, whether the sent original route and the derived route exist in the BGP broadcast route table is judged, if not, the original route and the derived route are added into the BGP broadcast route table, and an association relationship is established; otherwise, updating the original route and the derived route in the BGP broadcast routing table.
In the process of updating the original route and the derived route in the BGP broadcast route table, if the sent original route is the same as the existing derived route in the BGP broadcast route table, the association relationship between the existing derived route and the original route in the BGP broadcast route table is released, and the route category of the existing derived route is updated to the original route;
the sent derivative route is cleared if the sent derivative route is the same as the existing original route in the BGP advertised route table.
And sending the updated original route and the derivative route to the target equipment. For the process of route withdrawal, when the original route is withdrawn, the associated derivative routes are withdrawn at the same time, and the derivative routes cannot be withdrawn independently. And after processing, sending the withdrawn routing list to the target equipment.
In this embodiment, all update operations of the BGP broadcast routing table are encapsulated as a BGP route update message, and the BGP route update message is broadcast to the target device via the BGP routing protocol, thereby completing the release of the route update.
As can be seen from fig. 1, by decomposing the original route received from the source device according to the preset configuration rule, obtaining a plurality of derived routes having smaller granularity than the original route, and broadcasting the original route and the derived routes to the destination device, the flow direction of the data packet flowing from the external network can be changed, and the flow preferentially flows to the destination device, so that the flows received by the interfaces of other devices are reduced, network congestion is avoided, the whole process does not need manual operation by a worker, time and labor are saved, and the operation efficiency is high.
Based on the same inventive concept, the embodiment of the present invention further provides a route distribution device, as described in the following embodiments. Because the principle of the route broadcasting device for solving the problem is similar to that of the route broadcasting method, the implementation of the route broadcasting device can refer to the implementation of the route broadcasting method, and repeated parts are not described again. As used hereinafter, the term "unit" or "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.
In an embodiment of the present invention, as shown in fig. 2, the apparatus includes:
the route splitting module 201 is configured to split an original route received from a source device according to a preset configuration rule, and obtain a plurality of derived routes with granularity smaller than that of the original route.
And a route broadcasting module 202, configured to broadcast the original route and the derived route to the target device.
In this embodiment of the present invention, the route broadcasting module 202 is further configured to:
sending the original route and the derived route to a BGP broadcast route table;
updating or canceling the original route and the derived route in the BGP broadcast routing table;
and sending the updated original route and the derivative route to the target equipment.
In this embodiment of the present invention, the route broadcasting module 202 is further configured to:
judging whether the BGP broadcast routing table has the original routing and the derived routing;
and updating the original route and the derived route in the BGP broadcast routing table according to the judgment result.
In this embodiment of the present invention, the route broadcasting module 202 is further configured to:
acquiring a judgment result, if the judgment result is negative, adding the original route and the derived route into a BGP broadcast route table and establishing an association relation;
otherwise, updating the original route and the derived route in the BGP broadcast routing table.
In this embodiment of the present invention, the route broadcasting module 202 is further configured to:
in the process of updating the original route and the derived route in the BGP broadcast route table, if the sent original route is the same as the existing derived route in the BGP broadcast route table, the association relationship between the existing derived route and the original route in the BGP broadcast route table is released, and the route category of the existing derived route is updated to the original route;
the sent derivative route is cleared if the sent derivative route is the same as the existing original route in the BGP advertised route table.
The embodiment of the present invention further provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the above method when executing the computer program.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program for executing the foregoing method is stored in the computer-readable storage medium.
In summary, the original route is decomposed according to the preset configuration rule, a plurality of derived routes with granularity smaller than that of the original route are obtained, and the original route and the derived routes are broadcasted from the source device to the target device, so that the flow direction of a data packet flowing from an external network can be changed, and the flow preferentially flows into the target device, thereby reducing the flow received by other device interfaces, avoiding network blockage, avoiding manual operation of workers in the whole process, saving time and labor, and having high operation efficiency.
In the embodiment, the invention realizes the centralized management and the release of the network scheduling policy, and avoids the difficulty brought by the local policies scattered on different devices to the management. The consistency of the target equipment and the source equipment attached to the target equipment is ensured through the linkage processing of the original route and the derived route, including derivation, revocation, updating and the like, and the route safety is ensured.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable 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 invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or 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.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (12)
1. A method for routing, comprising:
decomposing an original route received from source equipment according to a preset configuration rule to obtain a plurality of derived routes with granularity smaller than that of the original route; wherein, the derived route exists attached to the father route; if the father route is cleared, the derived route is followed and cleared, and if the attribute of the father route is changed, the attribute of the derived route is followed and changed; the derived routing exists in each adjacent BGP broadcast routing table, and does not exist in the local routing table; the derived route generation operation is adapted to route updates in the outward direction of BGP routing protocol interactions, and takes effect when routing is advertised to the outside; if the policy is applied in the inward direction of BGP routing protocol interaction, ignoring the derived route generation operation; the priority of the derived route is lower than that of the conventional route, when the prefix of the derived route of one conventional route exists in the conventional route table at the same time, the derived route cannot be loaded into the BGP broadcast route table, and the generated derived route is covered by the conventional route when encountering the appearance of the same conventional route;
and broadcasting the original route and the derived route to the target equipment.
2. The method of claim 1, wherein routing the original route and the derived route to the destination device comprises:
sending the original route and the derived route to a BGP broadcast route table;
updating or canceling the original route and the derived route in the BGP broadcast routing table;
and sending the updated original route and the derivative route to the target equipment.
3. The method of claim 2, wherein updating the original route and the derived route in the BGP broadcast routing table comprises:
judging whether the BGP broadcast routing table has the original routing and the derived routing;
and updating the original route and the derived route in the BGP broadcast routing table according to the judgment result.
4. The method of claim 3, wherein updating the original route and the derived route in the BGP broadcast routing table based on the determination comprises:
acquiring a judgment result, if the judgment result is negative, adding the sent original route and the derived route into a BGP broadcast route table, and establishing an association relation between the original route and the derived route;
otherwise, updating the original route and the derived route in the BGP broadcast routing table.
5. The method of claim 4, wherein updating the original route and the derived route in the BGP broadcast routing table based on the determination further comprises:
in the process of updating the original route and the derived route in the BGP broadcast route table, if the sent original route is the same as the existing derived route in the BGP broadcast route table, the association relationship between the existing derived route and the original route in the BGP broadcast route table is released, and the route category of the existing derived route is updated to the original route;
the sent derivative route is cleared if the sent derivative route is the same as the existing original route in the BGP advertised route table.
6. A route distribution apparatus, comprising:
the route decomposition module is used for decomposing the original route received from the source equipment according to a preset configuration rule and acquiring a plurality of derived routes with granularity smaller than that of the original route; wherein, the derived route exists attached to the father route; if the father route is cleared, the derived route is followed and cleared, and if the attribute of the father route is changed, the attribute of the derived route is followed and changed; the derived routing exists in each adjacent BGP broadcast routing table, and does not exist in the local routing table; the derived route generation operation is suitable for route updating in an outward direction of BGP routing protocol interaction and takes effect when the route is broadcasted to the outside; if the policy is applied in the inward direction of BGP routing protocol interaction, ignoring the derived route generation operation; the priority of the derived route is lower than that of the conventional route, when the prefix of the derived route of one conventional route exists in the conventional route table at the same time, the derived route cannot be loaded into the BGP broadcast route table, and the generated derived route is covered by the conventional route when encountering the appearance of the same conventional route;
and the route broadcasting module is used for sending the original route and the derived route to the target equipment.
7. The apparatus of claim 6, wherein the route dissemination module is further to:
sending the original route and the derived route to a BGP broadcast route table;
updating or canceling the original route and the derived route in the BGP broadcast routing table;
and sending the updated original route and the derivative route to the target equipment.
8. The apparatus of claim 7, wherein the route dissemination module is further to:
judging whether the BGP broadcast routing table has the original routing and the derived routing;
and updating the original route and the derived route in the BGP broadcast routing table according to the judgment result.
9. The apparatus of claim 8, wherein the route dissemination module is further to:
acquiring a judgment result, if the judgment result is negative, adding the sent original route and the derived route into a BGP broadcast route table, and establishing an association relation between the original route and the derived route;
otherwise, updating the original route and the derived route in the BGP broadcast routing table.
10. The apparatus of claim 9, wherein the route dissemination module is further to:
in the process of updating the original route and the derived route in the BGP broadcast route table, if the sent original route is the same as the existing derived route in the BGP broadcast route table, the association relationship between the existing derived route and the original route in the BGP broadcast route table is released, and the route category of the existing derived route is updated to the original route;
the sent derivative route is cleared if the sent derivative route is the same as the existing original route in the BGP advertised route table.
11. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method of any one of claims 1 to 5 when executing the computer program.
12. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program for executing the method of any one of claims 1 to 5.
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| CN201911322255.9A CN113014493B (en) | 2019-12-20 | 2019-12-20 | Route broadcasting method and device |
| PCT/CN2020/135173 WO2021121116A1 (en) | 2019-12-20 | 2020-12-10 | Routing broadcasting method and apparatus |
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| CN201911322255.9A CN113014493B (en) | 2019-12-20 | 2019-12-20 | Route broadcasting method and device |
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| CN109150731A (en) * | 2018-09-19 | 2019-01-04 | 合肥工业大学 | Multicast packet connection circuit and its method for routing based on convolutional neural networks |
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| CN113014493A (en) | 2021-06-22 |
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