CN113746730B - Routing information processing method and device - Google Patents
Routing information processing method and device Download PDFInfo
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- CN113746730B CN113746730B CN202110981864.6A CN202110981864A CN113746730B CN 113746730 B CN113746730 B CN 113746730B CN 202110981864 A CN202110981864 A CN 202110981864A CN 113746730 B CN113746730 B CN 113746730B
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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
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/22—Alternate 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
- H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery
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Abstract
The present invention relates to the field of network communications technologies, and in particular, to a method and an apparatus for processing routing information. The method is applied to an SDN controller, the SDN controller is in communication connection with a plurality of vBGP devices, and the method comprises the following steps: receiving first route information reported by target vBGP equipment, marking the source of the first route information, and storing the marked first route information in a local place; judging whether second routing information which is reported by other vBGP devices and has the same route front stamp and the same next hop content exists locally or not; if the fact that the second routing information reported by other vBGP equipment does not exist locally is judged, the first routing information is converted into a corresponding flow table, and the flow table is issued to the vSwitch equipment.
Description
Technical Field
The present invention relates to the field of network communications technologies, and in particular, to a method and an apparatus for processing routing information.
Background
In order to achieve interworking between network overlay and host overlay, BGP auxiliary components are typically introduced to achieve interworking of hybrid overlay. The controller and the vBGP are arranged on a unified platform in a containerized mode, the Netconf is adopted for communication, the vBGP and the spline RR are used for establishing EVPN neighbors, the EVPN route information of the whole network is collected, after the EVPN route information is reported to the SDN controller, the controller realizes the mutual conversion of a host overlay flow meter and a network overlay side EVPN route, and the EVPN side information is sent to the vSwtich side through Openflow. And in the same way, the controller forwards the flow table information of the host overlay to be an EVPN route which is announced to RRs through vBGP, and the flow forwarding of the network overlay side and the host overlay side is completed.
When the spine equipment learns a new route, the VBGP software equipment learns a relevant route on the side of the network overlay through BGP connection, and meanwhile, the route is reported to the controller for learning, and is converted into a flow table and sent to the vSwitch equipment, so that the conversion from the route to the flow table is realized.
At present, the controller only processes the route learned by the primary vBGP, and issues a flow table to the vSwitch, and only injects the route learned from the host over to the primary vBGP, so that the selection of the primary VBGP is generally performed by adopting the VRRP technology at present, the VRRP decides which vBGP bears the forwarding task through an election mechanism, and if the primary link failure can reselect a new primary. Under the existing active-standby mechanism, route stability needs to be maintained through a Graceful Restart (GR) mechanism, but the change of route information cannot be responded during failover, the service is affected by long switchover time, the GR time is not well determined, and the route is too long and unsuitable. The multi-time routing is too short and insufficient, and it is difficult to have a relatively spectrum-leaning time.
Disclosure of Invention
The application provides a route information processing method and device, which are used for solving the problem of route oscillation caused by long active-standby switching time of vBGP equipment in the prior art.
In a first aspect, an embodiment of the present application provides a routing information processing method, applied to an SDN controller, where the SDN controller is communicatively connected to a plurality of bgp devices, the method includes:
receiving first route information reported by target vBGP equipment, marking the source of the first route information, and storing the marked first route information in a local place;
judging whether second routing information which is reported by other vBGP devices and has the same route front stamp and the same next hop content exists locally or not;
if the fact that the second routing information reported by other vBGP equipment does not exist locally is judged, the first routing information is converted into a corresponding flow table, and the flow table is issued to the vSwitch equipment.
Optionally, the step of marking the source of the first routing information and storing the marked first routing information locally includes:
marking the source of the first routing information based on a management IP address of the target bgp device;
and storing the management IP address of the target vBGP device and the first routing information locally.
Optionally, the step of storing the marked first routing information locally includes:
and storing the marked first routing information in a local memory.
Optionally, the method further comprises:
and if the fact that the third routing information with the same routing front stamp as the first routing information and different next hop exists locally is judged, marking the third routing information as invalid routing information.
Optionally, the method further comprises:
judging whether fourth routing information which is not learned and reported by the plurality of vBGP devices exists in the locally stored routing information or not based on a preset rule;
if yes, deleting the route information, and notifying the vSwitch device to delete the flow table corresponding to the fourth route information.
In a second aspect, the present application provides a routing information processing apparatus applied to an SDN controller, where the SDN controller is communicatively connected to a plurality of bgp devices, the apparatus includes:
the receiving unit is used for receiving first route information reported by target vBGP equipment, marking the source of the first route information and storing the marked first route information locally;
the judging unit is used for judging whether second routing information which is reported by other vBGP devices and has the same route front stamp and the same next hop content exists locally or not;
and the issuing unit is used for converting the first routing information into a corresponding flow table and issuing the flow table to the vSwitch equipment if the judging unit judges that the second routing information reported by other vBGP equipment does not exist locally.
Optionally, when marking the source of the first routing information and storing the marked first routing information locally, the receiving unit is specifically configured to:
marking the source of the first routing information based on a management IP address of the target bgp device;
and storing the management IP address of the target vBGP device and the first routing information locally.
Optionally, when the marked first routing information is stored locally, the receiving unit is specifically configured to:
and storing the marked first routing information in a local memory.
Optionally, the apparatus further comprises:
and the marking unit is used for marking the third routing information as invalid routing information if the judging unit judges that the third routing information with the same routing front stamp as the first routing information and different next hop exists locally.
Optionally, the apparatus further includes a deletion unit:
judging whether fourth routing information which is not learned and reported by the plurality of vBGP devices exists in the locally stored routing information or not based on a preset rule;
and if the fourth routing information exists, the deleting unit is used for deleting the routing information and notifying the vSwitch equipment to delete the flow table corresponding to the fourth routing information.
In a third aspect, an embodiment of the present application provides a routing information processing apparatus, including:
a memory for storing program instructions;
a processor for invoking program instructions stored in said memory, performing the steps of the method according to any of the first aspects above in accordance with the obtained program instructions.
In a fourth aspect, embodiments of the present application also provide a computer-readable storage medium storing computer-executable instructions for causing a computer to perform the steps of the method according to any one of the first aspects.
As can be seen from the foregoing, the routing information processing method provided in the embodiments of the present application is applied to an SDN controller, where the SDN controller is communicatively connected to a plurality of bgp devices, and the method includes: receiving first route information reported by target vBGP equipment, marking the source of the first route information, and storing the marked first route information in a local place; judging whether second routing information which is reported by other vBGP devices and has the same route front stamp and the same next hop content exists locally or not; if the fact that the second routing information reported by other vBGP equipment does not exist locally is judged, the first routing information is converted into a corresponding flow table, and the flow table is issued to the vSwitch equipment.
By adopting the route information processing method provided by the embodiment of the application, the controller establishes a connection relationship with a plurality of vBGP devices and injects routes; the plurality of vBGP devices establish a connection relationship with the Overlay network, the SDN controller maintains the route information reported by the plurality of vBGP devices, and the route information is not interrupted under the condition that only 1 vBGP device is required to survive, so that the problem of route oscillation caused by long fault switching time brought by a main preparation mechanism can be effectively avoided.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following description will briefly describe the drawings that are required to be used in the embodiments of the present application or the description in the prior art, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may also be obtained according to these drawings of the embodiments of the present application for a person having ordinary skill in the art.
Fig. 1 is a detailed flowchart of a routing information processing method provided in an embodiment of the present application;
fig. 2 is a networking schematic diagram of a deployment manner of a bgp device provided in an embodiment of the present application;
fig. 3 is a schematic structural diagram of a routing information processing apparatus according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of another routing information processing apparatus according to an embodiment of the present application.
Detailed Description
The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to any or all possible combinations including one or more of the associated listed items.
It should be understood that although the terms first, second, third, etc. may be used in embodiments of the present application to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, a first message may also be referred to as a second message, and similarly, a second message may also be referred to as a first message, without departing from the scope of the present application. Depending on the context, furthermore, the word "if" used may be interpreted as "at..once" or "when..once" or "in response to a determination".
As an example, referring to fig. 1, a detailed flowchart of a routing information processing method provided in an embodiment of the present application is applied to an SDN controller, where the SDN controller is communicatively connected to a plurality of bgp devices, and the method includes the following steps:
step 100: and receiving first route information reported by target vBGP equipment, marking the source of the first route information, and storing the marked first route information locally.
In practical application, when the spine equipment in the networking learns new route information, the BGP software equipment learns the route information related to the network over through BGP connection, and reports the route information to the SDN controller for learning, and the SDN controller converts the route information into a corresponding flow table and sends the flow table to the vSwitch equipment, so as to realize conversion from the route to the flow table.
The target bgp device is any bgp device of the plurality of bgp devices. Then, after receiving the route information (first route information) learned and reported by the target bgp device, the SND controller marks the source of the first route information (i.e., marks which bgp device the first route information is learned and reported by), and stores the marked first route information locally.
Specifically, in the embodiment of the present application, when marking the source of the first routing information and storing the marked first routing information locally, a preferred implementation manner is as follows:
marking the source of the first routing information based on a management IP address of the target bgp device; and storing the management IP address of the target vBGP device and the first routing information locally.
That is, the SND controller locally stores the management IP address of the target bgp device and the first routing information reported by the target bgp device, and marks the first routing information with the management IP address of the target bgp device.
Specifically, the marked first routing information may be stored in a local memory.
Step 110: and judging whether second routing information which is reported by other vBGP devices and has the same route front stamp and the same next hop content exists locally.
Specifically, if the route prefix of the first route information is a and the next hop is x, after receiving the first route information, it is determined whether there is second route information (route information reported by other bgp devices except the target bgp device) whose route prefix is a and next hop is x.
I.e. judging whether other route information with the front stamp of the route learned and reported by vBGP being A and the next hop being x exists. If the flow table exists, the flow table corresponding to the flow table is issued to the vSwitch equipment, and the flow table does not need to be issued again.
Step 120: if the fact that the second routing information reported by other vBGP equipment does not exist locally is judged, the first routing information is converted into a corresponding flow table, and the flow table is issued to the vSwitch equipment.
In this embodiment of the present application, the second routing information reported by other bgp devices does not exist locally, which may specifically include the following two cases:
case 1: judging that no route information with a route front stamp of A exists locally;
case 2: it is determined that there is third routing information whose route prefix is a and whose next hop is not x locally.
At this time, it is necessary to generate a corresponding flow table based on the first routing information and issue the flow table to the v Switch device.
Further, it is determined that the third routing information with the routing timestamp being a and the next hop not being x exists locally, and at this time, the routing information with the routing timestamp being a needs to be learned later, that is, the third routing information needs to be marked as invalid routing information, and correspondingly, the originally issued flow table generated based on the third routing information may be replaced, and needs to be replaced by the flow table generated based on the first routing information.
Further, in the embodiment of the present application, the method for processing routing information may further include the following steps:
judging whether fourth routing information which is not learned and reported by the plurality of vBGP devices exists in the locally stored routing information or not based on a preset rule; if yes, deleting the route information, and notifying the vSwitch device to delete the flow table corresponding to the fourth route information.
In practical application, if route information exists in the memory of the SDN controller before, when the latest learned route information is less than the memory route information, it is indicated that route revocation exists, at this time, update of the route information is needed, if the route information reported by the VBGP does not include some original route information or some route information, the SDN controller updates the memory information, and at the same time, notifies the vSwitch device to delete the related flow table, so as to ensure that the route information stored in the SDN controller is consistent with the route information learned by each bgp device and the converted flow table information.
The following describes in detail the deployment manner of the bgp device in the networking provided by the embodiment of the present application in combination with a specific application scenario. For example, referring to fig. 2, a networking schematic diagram of a deployment mode of a BGP device provided in this embodiment of the present application is shown, specifically, the deployment mode of the BGP device is switched to a dual-active mode, a BGP a and a BGP B may report learned routing information to an SND controller at the same time, an SDN controller adds memory information, marks a source of the routing information based on a management ip of the BGP device, and internally reserves two data.
That is, the bgp a and bgp B will respectively establish a bgp peer with the RR (spin) device to learn routing, and are generally consistent, and if an anomaly occurs in the bgp peer, it may learn that the routing information is different.
In the process of processing the route information, when any one of two vBGP compliant devices learns the route information (such as route information 1), the SDN controller judges whether the local memory has a corresponding function or notAnd if the route information (route information 1) does not exist, the configuration and the flow table issuing are carried out based on the route information 1, and if the route information exists, the memory information is updated, and the configuration issuing is not carried out. Then a single path ① Or alternatively ② When the fault occurs, the SDN controller does not need to switch the primary and the secondary vBGP devices, route information does not need to be learned and refreshed again under the condition that any vBGP device is ensured to survive, memory information is kept, the route is ensured not to be interrupted, and newly added route information can be processed normally. If the two vBGP devices are inconsistent in the learned route information, the route information learned later is the same.
Further, when the link between the vBGP A and the DC controller fails, the DC controller and the vBGP B normally communicate, the route information in the whole system can be normally processed, the forwarding of the over network is not affected, and the route is not interrupted. The link failure between the bgp B and DC controllers is the same.
When a link between the vBGP A and the spine equipment (RR) fails, the peer connection between the vBGP A and the spine equipment is not established, the route cannot be learned, the route of the vBGP B is learned normally, and the forwarding of the OVERLAY network is normal. The vBGP B is the same as the spine equipment failure.
When the vBGP A equipment fails, the connection between the vBGP A and the DC controller and the spine equipment is disconnected, and the controller normally processes the routing information of the vBGP B. And ensuring that forwarding of the over network is not affected.
When both vBGP a and vBGPB report the withdrawn routes, the SDN controller will delete the relevant flow table.
When any vBGP reports a newly learned route, the SDN controller responds to adding the relevant flow table and records the relevant memory information.
As an example, referring to fig. 3, a schematic structural diagram of a routing information processing apparatus provided in an embodiment of the present application is applied to an SDN controller, where the SDN controller is communicatively connected to a plurality of bgp devices, and the apparatus includes:
a receiving unit 30, configured to receive first routing information reported by a target bgp device, mark a source of the first routing information, and store the marked first routing information locally;
a judging unit 31, configured to judge whether second routing information that has the same route prefix and the same next hop content and is reported by other bgp devices exists locally;
and a transmitting unit 32, where if the judging unit 31 judges that the second routing information reported by other bgp devices does not exist locally, the transmitting unit 32 is configured to convert the first routing information into a corresponding flow table, and transmit the flow table to the vSwitch device.
Optionally, when marking the source of the first routing information and storing the marked first routing information locally, the receiving unit 30 is specifically configured to:
marking the source of the first routing information based on a management IP address of the target bgp device;
and storing the management IP address of the target vBGP device and the first routing information locally.
Optionally, when the marked first routing information is stored locally, the receiving unit 30 is specifically configured to:
and storing the marked first routing information in a local memory.
Optionally, the apparatus further comprises:
and a marking unit, configured to mark the third routing information as invalid routing information if the judging unit 31 judges that the third routing information having the same routing prefix as the first routing information and different next hop exists locally.
Optionally, the apparatus further includes a deletion unit:
judging whether fourth routing information which is not learned and reported by the plurality of vBGP devices exists in the locally stored routing information or not based on a preset rule;
and if the fourth routing information exists, the deleting unit is used for deleting the routing information and notifying the vSwitch equipment to delete the flow table corresponding to the fourth routing information.
The above units may be one or more integrated circuits configured to implement the above methods, for example: one or more application specific integrated circuits (Application Specific Integrated Circuit, abbreviated as ASIC), or one or more microprocessors (digital singnal processor, abbreviated as DSP), or one or more field programmable gate arrays (Field Programmable Gate Array, abbreviated as FPGA), or the like. For another example, when a unit is implemented in the form of a processing element scheduler code, the processing element may be a general purpose processor, such as a central processing unit (Central Processing Unit, CPU) or other processor that may invoke the program code. For another example, the units may be integrated together and implemented in the form of a system-on-a-chip (SOC).
Further, in the routing information processing apparatus provided in the embodiment of the present application, as for a hardware architecture schematic diagram of the routing information processing apparatus, as shown in fig. 4, the routing information processing apparatus may include: a memory 40 and a processor 41,
Optionally, the present application further provides an SDN controller comprising at least one processing element (or chip) for executing the above-described method embodiments.
Optionally, the present application also provides a program product, such as a computer readable storage medium, storing computer executable instructions for causing the computer to perform the above-described method embodiments.
Here, a machine-readable storage medium may be any electronic, magnetic, optical, or other physical storage device that may contain or store information, such as executable instructions, data, or the like. For example, a machine-readable storage medium may be: RAM (Radom Access Memory, random access memory), volatile memory, non-volatile memory, flash memory, a storage drive (e.g., hard drive), a solid state drive, any type of storage disk (e.g., optical disk, dvd, etc.), or a similar storage medium, or a combination thereof.
The system, apparatus, module or unit set forth in the above embodiments may be implemented in particular by a computer chip or entity, or by a product having a certain function. A typical implementation device is a computer, which may be in the form of a personal computer, laptop computer, cellular telephone, camera phone, smart phone, personal digital assistant, media player, navigation device, email device, game console, tablet computer, wearable device, or a combination of any of these devices.
For convenience of description, the above devices are described as being functionally divided into various units, respectively. Of course, the functions of each element may be implemented in one or more software and/or hardware elements when implemented in the present application.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application may take the form of a computer program product on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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.
Moreover, 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 foregoing description of the preferred embodiments of the present invention is not intended to limit the invention to the precise form disclosed, and any modifications, equivalents, improvements and alternatives falling within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A method of routing information processing, applied to an SDN controller, the SDN controller communicatively coupled to a plurality of bgp devices, the method comprising:
receiving first route information reported by target vBGP equipment, marking the source of the first route information, and storing the marked first route information in a local place;
judging whether second routing information which is reported by other vBGP devices and has the same route front stamp and the same next hop content exists locally or not;
if the second routing information reported by other vBGP equipment does not exist locally, converting the first routing information into a corresponding flow table, and transmitting the flow table to the vSwitch equipment;
judging whether fourth routing information which is not learned and reported by the plurality of vBGP devices exists in the locally stored routing information or not based on a preset rule; if yes, deleting the fourth routing information, and notifying the vSwitch equipment to delete the flow table corresponding to the fourth routing information.
2. The method of claim 1, wherein the steps of tagging the source of the first routing information and storing the tagged first routing information locally comprise:
marking the source of the first routing information based on a management IP address of the target bgp device;
and storing the management IP address of the target vBGP device and the first routing information locally.
3. The method of claim 1, wherein storing the marked first routing information locally comprises:
and storing the marked first routing information in a local memory.
4. A method according to any one of claims 1-3, wherein the method further comprises:
and if the fact that the third routing information with the same routing front stamp as the first routing information and different next hop exists locally is judged, marking the third routing information as invalid routing information.
5. A routing information processing apparatus, applied to an SDN controller, the SDN controller communicatively connected to a plurality of bgp devices, the apparatus comprising:
the receiving unit is used for receiving first route information reported by target vBGP equipment, marking the source of the first route information and storing the marked first route information locally;
the judging unit is used for judging whether second routing information which is reported by other vBGP devices and has the same route front stamp and the same next hop content exists locally or not;
the issuing unit is used for converting the first routing information into a corresponding flow table and issuing the flow table to the vSwitch equipment if the judging unit judges that the second routing information reported by other vBGP equipment does not exist locally;
the deleting unit judges whether fourth routing information which is not learned and reported by the plurality of vBGP devices exists in the locally stored routing information or not based on a preset rule; if so, the deleting unit is used for deleting the fourth routing information and notifying the vSwitch equipment to delete the flow table corresponding to the fourth routing information.
6. The apparatus of claim 5, wherein the receiving unit is configured to, when marking a source of the first routing information and storing the marked first routing information locally:
marking the source of the first routing information based on a management IP address of the target bgp device;
and storing the management IP address of the target vBGP device and the first routing information locally.
7. The apparatus of claim 5, wherein the receiving unit is configured to, when storing the marked first routing information locally:
and storing the marked first routing information in a local memory.
8. The apparatus of any one of claims 5-7, wherein the apparatus further comprises:
and the marking unit is used for marking the third routing information as invalid routing information if the judging unit judges that the third routing information with the same routing front stamp as the first routing information and different next hop exists locally.
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| CN113746730A (en) | 2021-12-03 |
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