CN114205285B - OSPF route selecting method and device based on link quality - Google Patents
OSPF route selecting method and device based on link quality Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/12—Shortest path evaluation
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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
- H04L45/12—Shortest path evaluation
- H04L45/124—Shortest path evaluation using a combination of metrics
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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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Abstract
The invention discloses an OSPF routing method and device based on link quality, wherein the method comprises the following steps: acquiring OSPF neighbor information and an address interconnection table; determining the load number of links and the IP addresses of the local end and the opposite end of each link; the packet sequencing is carried out through the result of ping measurement with the source address, and the priority of different links is determined; and configuring the minimum cost value to the links with the load quantity according to the priorities of different links and the link load quantity. The method and the device determine the link quality priority through the conditions of link quality such as delay or packet loss and the like, and calculate the link load number by using the OSPF neighbors to finally determine the preferable link, thereby more reasonably completing OSPF routing.
Description
Technical Field
The invention relates to the field of OSPF (routing protocol) routing, in particular to an OSPF routing method and device based on link quality.
Background
When using cost routing, OSPF is commonly practiced: if the selection of a single link only needs to set a certain link to a minimum cost value, the flow is automatically switched to the link; if the selection of a plurality of links is performed, the cost of the links is set to be the minimum value of the cost, and then the traffic is automatically switched to the links to realize load routing. However, no matter whether a single link or a plurality of links are selected, the routing is only carried out by virtue of a cost value, and as the OSPF protocol only has a detection mechanism for whether neighbors fail or not, the quality of the links has no cognitive ability, the conditions of link delay or packet loss and the like are not considered, misjudgment is easily caused, and if the conditions of delay or packet loss occur in the links, service delay or packet loss easily occurs, so that the problem of communication quality of the service is caused.
Disclosure of Invention
In order to solve the technical problems existing when OSPF uses cost for routing, the invention provides an OSPF routing method and device based on link quality, which determines link quality priority through conditions such as delay or packet loss and the like, calculates link load number by utilizing OSPF neighbors and finally determines a preferred link, thereby more reasonably completing OSPF routing.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
in an embodiment of the present invention, an OSPF routing method based on link quality is provided, where the method includes:
acquiring OSPF neighbor information and an address interconnection table;
determining the load number of links and the IP addresses of the local end and the opposite end of each link;
grouping by the result of ping with the source address, sequencing the group without packet loss and determining the priority of different links;
and configuring the minimum cost value to the links with the load quantity according to the priorities of different links and the link load quantity.
Further, acquiring the OSPF neighbor information and the address interconnection table, including:
determining equipment for configuring OSPF at a service end or a client side;
and collecting OSPF neighbor information of the device and an address interconnection table of the device and other devices.
Further, determining the link load number and the local end and the opposite end IP addresses of each link includes:
obtaining the link load number through the interface number of the OSPF neighbor;
and determining the IP addresses of the home terminal and the opposite terminal of each link according to the address interconnection table.
Further, grouping by the result of ping with the source address, sorting the group without packet loss and determining the priority of different links, including:
judging packet loss or delay of a link through a ping test with a source address, and collecting a ping test result;
calculating the average value of ping measurement results of each link, dividing the ping measurement results into two groups for storage, wherein the group with the lowest priority is one group for storage with packet loss or delay; the packet is not lost or delayed is a group, the packet is stored in a sequence from small to large, if the same value is stored in sequence, the same value is used as the weight value of the priority of each link, and the smaller the value is, the more preferred the value is.
Further, configuring the minimum cost value to the links with the load number according to the priorities of different links and the link load number comprises the following steps:
determining an optimal link in a group without packet loss or delay according to the link load number and the weight value;
and adjusting the cost value of the determined optimal link to be minimum.
In an embodiment of the present invention, there is further provided an OSPF routing device based on link quality, including:
the configuration information acquisition module is used for acquiring OSPF neighbor information and an address interconnection table;
the link address determining module is used for determining the link load number and the IP addresses of the home terminal and the opposite terminal of each link;
the link priority determining module is used for grouping through the result of ping with the source address, sequencing the group without packet loss and determining the priorities of different links;
and the link optimization module is used for configuring the minimum cost value to the links with the load quantity according to the priorities of different links and the link load quantity.
Further, the configuration information acquisition module is specifically configured to:
determining equipment for configuring OSPF at a service end or a client side;
and collecting OSPF neighbor information of the device and an address interconnection table of the device and other devices.
Further, the link address determining module is specifically configured to:
obtaining the link load number through the interface number of the OSPF neighbor;
and determining the IP addresses of the home terminal and the opposite terminal of each link according to the address interconnection table.
Further, the link priority determining module is specifically configured to:
judging packet loss or delay of a link through a ping test with a source address, and collecting a ping test result;
calculating the average value of ping measurement results of each link, dividing the ping measurement results into two groups for storage, wherein the group with the lowest priority is one group for storage with packet loss or delay; the packet is not lost or delayed is a group, the packet is stored in a sequence from small to large, if the same value is stored in sequence, the same value is used as the weight value of the priority of each link, and the smaller the value is, the more preferred the value is.
Further, the link optimization module is specifically configured to:
determining an optimal link in a group without packet loss or delay according to the link load number and the weight value;
and adjusting the cost value of the determined optimal link to be minimum.
In an embodiment of the present invention, a computer device is further provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the aforementioned link quality-based OSPF routing method when executing the computer program.
In an embodiment of the present invention, a computer-readable storage medium is also presented, in which a computer program for performing an OSPF routing method based on link quality is stored.
The beneficial effects are that:
1. the conventional OSPF can only select a route through the minimum cost, but neglects the problem of link quality; the invention can determine the quality of the link by using the ping with the source address, thereby selecting the route according to the quality.
2. Other protocols using cost routing can also be used to reference the present invention to achieve routing according to link quality.
Drawings
FIG. 1 is a schematic diagram of the connection of multiple links according to an embodiment of the present invention;
FIG. 2 is a flow chart of an OSPF routing method based on link quality according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an OSPF routing device based on link quality according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a computer device according to the present invention.
Detailed Description
The principles and spirit of the present invention will be described below with reference to several exemplary embodiments, with the understanding that these embodiments are merely provided to enable those skilled in the art to better understand and practice the invention and are not intended to limit the scope of the invention in any way. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Those skilled in the art will appreciate that embodiments of the invention may be implemented as a system, apparatus, device, method, or computer program product. Accordingly, the present disclosure may be embodied in the following forms, namely: complete hardware, complete software (including firmware, resident software, micro-code, etc.), or a combination of hardware and software.
According to the embodiment of the invention, the OSPF routing method and the device based on link quality are provided, the load quantity is calculated by collecting OSPF neighbor information, the link local end address and the opposite end address are obtained through an address interconnection table, then the average value calculation and the grouping sequencing are carried out on the result of ping measurement with the source address, so that the priorities of different links are determined, and finally the minimum cost is configured to a plurality of links according to the link load quantity, so that the OSPF routing is more reasonable.
The principles and spirit of the present invention are explained in detail below with reference to several representative embodiments thereof.
The invention provides an OSPF routing method based on link quality, which comprises the following steps:
1. acquiring OSPF neighbor information and an address interconnection table; the method comprises the following steps:
determining equipment for configuring OSPF at a service end or a client side;
and collecting OSPF neighbor information of the device and an address interconnection table of the device and other devices.
2. Determining the load number of links and the IP addresses of the local end and the opposite end of each link; the method comprises the following steps:
obtaining the link load number through the interface number of the OSPF neighbor;
and determining the IP addresses of the home terminal and the opposite terminal of each link according to the address interconnection table.
3. Grouping by the result of ping with the source address, sequencing the group without packet loss and determining the priority of different links; the method comprises the following steps:
judging packet loss or delay of a link through a ping test with a source address, and collecting a ping test result;
calculating the average value of ping measurement results of each link, dividing the ping measurement results into two groups for storage, wherein the group with the lowest priority is stored in X1 when packet loss or delay occurs, and the link needing to be changed can be marked; the packet is not lost or delayed is a group, the packet is stored in the X2 in a sequence from small to large, if the same value exists, the same value is sequentially stored, the same value is used as the weight value of the priority of each link, and the smaller the value is, the higher the priority is.
4. Configuring a minimum cost value to links with the load quantity according to the priorities of different links and the link load quantity; the method comprises the following steps:
determining an optimal link in a group without packet loss or delay according to the link load number and the weight value;
and adjusting the cost value of the determined optimal link to be minimum.
It should be noted that although the operations of the method of the present invention are described in a particular order in the above embodiments and the accompanying drawings, this does not require or imply that the operations must be performed in the particular order or that all of the illustrated operations be performed in order to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step to perform, and/or one step decomposed into multiple steps to perform.
For a clearer explanation of the above-described link quality-based OSPF routing method, a specific embodiment is described below, but it should be noted that this embodiment is only for better explaining the present invention and is not meant to limit the present invention unduly.
The following is an example of fig. 1:
fig. 2 is a flow chart of an OSPF routing method based on link quality according to an embodiment of the present invention. As shown in fig. 2, includes:
s101: acquiring OSPF neighbor information of a device near a service side such as R1 and an address interconnection table of the device and other devices:
1) The number of loads is calculated to be 2 (the number of lines containing full below is the number of loads) according to the number of neighbor interfaces of the OSPF:
2) The address interconnection table (pre-plan table) is as follows table 1:
TABLE 1
Table 1 above is generally a plan during the project, and is used to guide the operator in configuring the equipment according to the plan. There are four paths in the table, only two are used in OSPF at present, and the other two can be interpreted as backup paths, and the following description is made with respect to the four paths IP address. In addition, the neighbor above is 192.168.1.2, because the address is the smallest among all addresses in R2, and the interface corresponding to the neighbor selected by OSPF may not be used to enable OSPF.
S102: the IP address of each link home and peer is determined as shown in table 2 below:
TABLE 2
| A-side device name | Link identification | IP end A | B-side IP |
| R1 | GigabitEthernet0/0/0 | 192.168.1.1 | 192.168.1.2 |
| R1 | GigabitEthernet0/0/1 | 192.168.2.1 | 192.168.2.2 |
| R1 | GigabitEthernet0/0/2 | 192.168.3.1 | 192.168.3.2 |
| R1 | GigabitEthernet0/0/3 | 192.168.4.1 | 192.168.4.2 |
S103: outputting the ping measurement and collection information of each link according to S102:
s104: outputting each ping measurement result (data containing Replyfrom after ping measurement) to S103, calculating a mean value, storing the mean value in groups, specifically storing the lost packets in X1, and storing the lost packets in X2, if the same value exists, sequentially storing:
x1: list of//
[R1-GigabitEthernet0/0/2|40]
X2: list of//
[R1-GigabitEthernet0/0/0|18，R1-GigabitEthernet0/0/1|38，R1-GigabitEthernet0/0/3|38]
S105: and determining R1-gigabit Ethernet 0/0/0.sub.18 and R1-gigabit Ethernet 0/0/1.sub.38 as optimal links according to the load number of 2 and in the X2 group, and finally, adjusting costs of the two links to be minimum.
Based on the same inventive concept, the invention also provides an OSPF routing device based on link quality. The implementation of the device can be referred to as implementation of the above method, and the repetition is not repeated. The term "module" as used below may be a combination of software and/or hardware that implements the intended function. While the means described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and contemplated.
Fig. 3 is a schematic diagram of an OSPF routing device based on link quality according to an embodiment of the present invention. As shown in fig. 3, the apparatus includes:
a configuration information obtaining module 201, configured to obtain OSPF neighbor information and an address interconnection table; the method comprises the following steps:
determining equipment for configuring OSPF at a service end or a client side;
and collecting OSPF neighbor information of the device and an address interconnection table of the device and other devices.
A link address determining module 202, configured to determine a link load number and IP addresses of a home terminal and a peer terminal of each link; the method comprises the following steps:
obtaining the link load number through the interface number of the OSPF neighbor;
and determining the IP addresses of the home terminal and the opposite terminal of each link according to the address interconnection table.
The link priority determining module 203 is configured to perform grouping according to a result of ping with a source address, order a group without packet loss, and determine priorities of different links; the method comprises the following steps:
judging packet loss or delay of a link through a ping test with a source address, and collecting a ping test result;
calculating the average value of ping measurement results of each link, dividing the ping measurement results into two groups for storage, wherein the group with the lowest priority is one group for storage with packet loss or delay; the packet is not lost or delayed is a group, the packet is stored in a sequence from small to large, if the same value is stored in sequence, the same value is used as the weight value of the priority of each link, and the smaller the value is, the more preferred the value is.
The link optimizing module 204 is configured to configure a minimum cost value to the links with the load number according to the priorities of different links and the link load number; the method comprises the following steps:
determining an optimal link in a group without packet loss or delay according to the link load number and the weight value;
and adjusting the cost value of the determined optimal link to be minimum.
It should be noted that while several modules of a link quality based OSPF routing apparatus are mentioned in the detailed description above, this partitioning is merely exemplary and not mandatory. Indeed, the features and functions of two or more modules described above may be embodied in one module in accordance with embodiments of the present invention. Conversely, the features and functions of one module described above may be further divided into a plurality of modules to be embodied.
Based on the foregoing inventive concept, as shown in fig. 4, the present invention further proposes a computer device 300, including a memory 310, a processor 320, and a computer program 330 stored in the memory 310 and executable on the processor 320, where the processor 320 implements the aforementioned link quality-based OSPF routing method when executing the computer program 330.
Based on the foregoing inventive concept, the present invention also proposes a computer-readable storage medium storing a computer program for executing the aforementioned link quality-based OSPF routing method.
The OSPF routing method and the device based on the link quality can determine the link quality by utilizing the ping with the source address, thereby selecting the route; other protocols using cost routing can also be used to reference the present invention to achieve routing according to link quality.
While the spirit and principles of the present invention have been described with reference to several particular embodiments, it is to be understood that the invention is not limited to the disclosed embodiments nor does it imply that features of the various aspects are not useful in combination, nor are they useful in any combination, such as for convenience of description. The invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
It should be apparent to those skilled in the art that various modifications or variations can be made in the present invention without requiring any inventive effort by those skilled in the art based on the technical solutions of the present invention.
Claims (6)
1. An OSPF routing method based on link quality, the method comprising:
acquiring OSPF neighbor information and an address interconnection table;
determining the link load number and the IP addresses of the local end and the opposite end of each link comprises the following steps:
obtaining the link load number through the interface number of the OSPF neighbor full state;
determining the IP addresses of the home terminal and the opposite terminal of each link according to the address interconnection table;
grouping by the result of ping with source address, sorting the group without packet loss and determining the priority of different links, including:
judging packet loss or delay of a link through a ping test with a source address, and collecting a ping test result;
calculating the average value of ping measurement results of each link, dividing the ping measurement results into two groups for storage, wherein the group with the lowest priority is one group for storage with packet loss or delay; the packet is not lost or delayed is a group, the packet is sorted and stored from small to large, if the same value is stored in sequence, the same value is used as the weight value of the priority of each link, and the smaller the value is, the more priority is;
configuring the minimum cost value to the links with the load quantity according to the priorities of different links and the link load quantity comprises the following steps:
determining an optimal link in a group without packet loss or delay according to the link load number and the weight value;
and adjusting the cost value of the determined optimal link to be minimum.
2. The link quality based OSPF routing method of claim 1, wherein obtaining OSPF neighbor information and an address interconnection table comprises:
determining equipment for configuring OSPF at a service end or a client side;
and collecting OSPF neighbor information of the device and an address interconnection table of the device and other devices.
3. An OSPF routing apparatus based on link quality, the apparatus comprising:
the configuration information acquisition module is used for acquiring OSPF neighbor information and an address interconnection table;
the link address determining module is configured to determine a link load number and IP addresses of a home terminal and a peer terminal of each link, and includes:
obtaining the link load number through the interface number of the OSPF neighbor full state;
determining the IP addresses of the home terminal and the opposite terminal of each link according to the address interconnection table;
the link priority determining module is configured to perform grouping according to a result of ping with a source address, order a group without packet loss, and determine priorities of different links, and includes:
judging packet loss or delay of a link through a ping test with a source address, and collecting a ping test result;
calculating the average value of ping measurement results of each link, dividing the ping measurement results into two groups for storage, wherein the group with the lowest priority is one group for storage with packet loss or delay; the packet is not lost or delayed is a group, the packet is sorted and stored from small to large, if the same value is stored in sequence, the same value is used as the weight value of the priority of each link, and the smaller the value is, the more priority is;
the link optimizing module is used for configuring the minimum cost value to the links with the load quantity according to the priorities of different links and the link load quantity, and comprises the following steps:
determining an optimal link in a group without packet loss or delay according to the link load number and the weight value;
and adjusting the cost value of the determined optimal link to be minimum.
4. The OSPF routing apparatus based on link quality as set forth in claim 3, wherein said configuration information obtaining module is specifically configured to:
determining equipment for configuring OSPF at a service end or a client side;
and collecting OSPF neighbor information of the device and an address interconnection table of the device and other devices.
5. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method of any of claims 1-2 when executing the computer program.
6. A computer readable storage medium, wherein a program is stored in the storage medium, which program, when executed by a processor, is adapted to implement an OSPF routing method based on link quality as claimed in any of claims 1-2.
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