CN116886364A - SDN switch operation method - Google Patents
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- CN116886364A CN116886364A CN202310874955.9A CN202310874955A CN116886364A CN 116886364 A CN116886364 A CN 116886364A CN 202310874955 A CN202310874955 A CN 202310874955A CN 116886364 A CN116886364 A CN 116886364A
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 150000003839 salts Chemical class 0.000 claims description 4
- 238000011017 operating method Methods 0.000 claims 3
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
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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
- H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
- H04L47/2425—Traffic characterised by specific attributes, e.g. priority or QoS for supporting services specification, e.g. SLA
- H04L47/2433—Allocation of priorities to traffic types
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/60—Software-defined switches
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/40—Network security protocols
Abstract
The invention relates to the technical field of switches, and provides an SDN switch operation method, which comprises the following steps: step one: the user sends out data; step two: receiving signals and forwarding; step three: SDN controller processing and comparison; step four: data grading and encryption; step five: priority setting and forwarding; the first step specifically comprises the following steps: 1) And (3) operation preparation: the system comprises a group of SDN switches and a plurality of user terminals connected with the phase signals of the SDN switches; the SDN switch comprises an SDN main control module, wherein the SDN main control module is used for processing rules set by a user and guaranteeing normal operation of the whole SDN switch; and the terminal of the SDN main control module is respectively connected with a forwarding module, a recording module and a grading module through lines. Through the technical scheme, the problem that the conventional SDN switch cannot grade and encrypt forwarded information, is easy to intercept by others in the information transmission process without encryption, and cannot set encryption grade according to actual requirements is solved.
Description
Technical Field
The invention relates to the technical field of switches, in particular to an SDN switch operation method.
Background
SDN is a software defined network, an SDN switch is a switch with a network definition function relative to a common switch, and SDN switch configuration and control technology has very important significance for data center network traffic load balancing, and can globally optimize the forwarding behavior of the switch and optimize the network performance;
in short, the SDN can well realize the separation of control and forwarding, thereby realizing the flexible control of network traffic; compared with the common switch, the SDN switch has certain difference, and in popular terms, a user controls an upper input flow table of the product and issues rules to the SDN switch, and data packets passing through the SDN switch are forwarded according to the flow table rules, namely the functions of the switch are completed according to the rules set by the user, while the traditional switch is forwarded by the switch, the traditional switch is a distributed network, and the SDN switch is a centralized network, so that the network is simplified through SDN;
through retrieval, the operation method, the controller and the switch of the SDN switch with the prior authorization bulletin number of CN106936720B are matched with the controller and the switch to realize that the SDN switch can continue to forward data packets after the SDN switch is disconnected from the SDN controller, thereby ensuring that the service is not interrupted;
however, the existing SDN switch cannot classify and encrypt forwarded information, the information which is not encrypted is easy to intercept by others in the process of information transmission, the security is low, and the encryption grade cannot be set according to actual requirements, so that an operation method of the SDN switch is provided.
Disclosure of Invention
The invention provides an SDN switch operation method, which solves the problems that the prior SDN switch in the related technology cannot grade and encrypt forwarded information, is easy to intercept by others in the information transmission process without encryption, has lower safety and cannot set encryption grade according to actual requirements.
The technical scheme of the invention is as follows:
an operation method of an SDN switch includes the following steps:
step one: the user sends out data;
step two: receiving signals and forwarding;
step three: SDN controller processing and comparison;
step four: data grading and encryption;
step five: priority setting and forwarding;
the first step specifically comprises the following steps: 1) And (3) operation preparation: the system comprises a group of SDN switches and a plurality of user terminals connected with the phase signals of the SDN switches;
the SDN switch comprises an SDN main control module, wherein the SDN main control module is used for processing rules set by a user and guaranteeing normal operation of the whole SDN switch;
the terminal of the SDN main control module is respectively connected with a forwarding module, a recording module and a grading module through lines, the terminal of the recording module is connected with a comparison module through lines, the terminal of the grading module is connected with an encryption module through lines, and the terminal of the encryption module is connected with a priority module through lines;
the forwarding module is used for forwarding the data packet sent by the user to other users or sending the data packet to the SDN main control module;
the recording module is used for recording the information of the SDN main control module;
the grading module is used for grading the encryption grade of the data packet;
the comparison module is used for comparing the rule of the data packet recorded by the recording module with the existing rule;
the encryption module is used for encrypting the data packets classified by the classification module to different degrees;
the priority module is used for setting the priority of forwarding the encrypted data packet;
2) And (3) starting operation: and the user sends out a data packet to a forwarding module in the SDN switch through the terminal application layer APP.
The second step specifically comprises:
and the forwarding module receives the corresponding data packet signal and forwards the data packet signal to the SDN main control module.
The fourth step specifically comprises:
1) The data packet is sent to a grading module through an SDN main control module after the third step, the encryption degree of the data packet is graded according to the corresponding requirement of the data packet sent by a user, the encryption is divided into three grades, namely high grade encryption salt encryption, medium grade asymmetric encryption and low grade symmetric encryption;
2) And encrypting the data packet to different degrees through the encryption module according to the encryption classification of the data packet by the classification module.
As a further technical scheme of the present invention, the third step specifically includes:
the method comprises the following steps: the SDN main control module invokes a flow table of the recording module, compares the flow table with the packet header of the data packet through the comparison module, and processes the matching entry according to a set rule after comparing the matching entry;
the second method is as follows: the SDN main control module invokes a flow table of the recording module, the comparison module compares the flow table with the packet header of the data packet, corresponding items are not compared, the data packet is processed according to the rule specified by the user through the SDN main control module, the subsequent forwarding of the data packet meets the rule set by the user, and meanwhile the new rule is recorded through the recording module and is recorded into the flow table.
As a further technical scheme of the invention, the fifth step specifically comprises the following steps:
1) According to the data packet requirements of a sending user, grading the priority of the data packets at the same time, and forwarding the data packets with high priority preferentially;
2) The priority is divided into two levels of priority forwarding and normal forwarding, the data packet with high encryption level is forwarded preferentially, and the data packet is forwarded preferentially according to the corresponding rule of the data packet sent by the user;
3) And forwarding the data packet to a target user through a forwarding module, and obtaining the data packet by the target user through terminal equipment, decrypting the data packet through a corresponding decryption technology and checking the data packet.
As a further technical scheme of the invention, the content recorded by the recording module comprises the name of a forwarding module forwarding a data packet, a rule of a user newly setting the data packet, the grade of grading the data packet by a grading module, the encryption grade of the data packet by an encryption module, the priority setting of the data packet by a priority module and necessary cache data generated during operation of an SDN switch.
As a further technical scheme of the present invention, after the recording module records the new rule, the content of the flow table will correspondingly increase the rule, and the SDN master control module increases the corresponding rule and records the rule through the recording module to form the latest flow table.
As a further technical scheme of the invention, the grading module prioritizes the grading of the data packets according to the definition grade set by the user, and processes the data packets according to the low grade without setting the grade.
As a further technical scheme of the invention, the priority module sets clear priority to the data packet according to the user, and processes the data packet according to normal forwarding without setting priority.
As a further technical scheme of the invention, the data packet sent in the first step further comprises any one or more of custom rules, encryption levels and priority settings.
As a further technical solution of the present invention, the forwarding module is associated with the user terminal through a 5G signal.
As a further technical scheme of the present invention, in the fifth step, the target user decrypts the data packet by a corresponding decryption method after receiving the data packet, and obtains a decrypted data packet.
The working principle and the beneficial effects of the invention are as follows:
1. the SDN switch operation method can grade the forwarded data packet according to the needs of the user, encrypt the data packet according to the graded grades to different degrees, forward the data packet according to different priorities, record the latest set rule and process the data packet according to the rule.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a flow chart illustrating the operation of the present invention;
FIG. 2 is a system block diagram of the present invention;
fig. 3 is a schematic diagram of the connection between an SDN switch and a user terminal according to the present invention.
In the figure: 1. SDN exchanger; 2. SDN master control module; 3. a forwarding module; 4. a recording module; 5. a grading module; 6. a comparison module; 7. an encryption module; 8. and a priority module.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1 to 3, the present embodiment proposes an operation method of an SDN switch 1, including the following steps:
step one: the user sends out data;
step two: receiving signals and forwarding;
step three: SDN controller processing and comparison;
step four: data grading and encryption;
step five: priority setting and forwarding;
the first step specifically comprises the following steps:
1) And (3) operation preparation: the method comprises the steps that the method comprises a group of SDN switches 1 and a plurality of user terminals which are connected with phase signals of the SDN switches 1, encryption grades are set to be high, and priority is set to be high;
the SDN switch 1 comprises an SDN main control module 2, wherein the SDN main control module 2 is used for processing rules set by a user and guaranteeing the normal operation of the whole SDN switch 1;
the terminal of SDN main control module 2 is connected with transmitting module 3, recording module 4 and grading module 5 through the circuit separately, the terminal of recording module 4 is connected with contrast module 6 through the circuit, the terminal of grading module 5 is connected with encryption module 7 through the circuit, the terminal of encryption module 7 is connected with priority module 8 through the circuit;
the forwarding module 3 is used for forwarding the data packet sent by the user to other users or sending the data packet to the SDN main control module 2;
the recording module 4 is used for recording the information of the SDN main control module 2;
the grading module 5 is used for grading the encryption grade of the data packet;
the comparison module 6 is used for comparing the rule of the data packet recorded by the recording module 4 with the existing rule;
the encryption module 7 is used for encrypting the data packets classified by the classification module 5 to different degrees;
the priority module 8 is used for setting the priority of forwarding the encrypted data packet;
2) And (3) starting operation: and the user sends out a data packet to a forwarding module 3 in the SDN switch 1 through a terminal application layer APP.
The second step specifically comprises:
the forwarding module 3 receives the corresponding data packet signal and forwards the data packet signal to the SDN main control module 2.
The fourth step specifically comprises:
1) The data packet is sent to the grading module 5 through the SDN main control module 2 after passing through the step three, the encryption degree of the data packet is graded according to the corresponding requirement of the data packet sent by a user, the encryption is set to be high-grade, and the encryption is carried out through an encryption salt technology;
2) The data packet is encrypted at a high level by the encryption module 7 according to the encryption classification of the data packet by the classification module 5.
The third step specifically comprises:
the method comprises the following steps: the SDN main control module 2 invokes the flow table of the recording module 4, compares the flow table with the packet header of the data packet through the comparison module 6, and processes the data packet according to the set rule after comparing out the matching item.
The fifth step specifically comprises:
1) According to the data packet requirements of a sending user, grading the priority of the data packets at the same time, and forwarding the data packets with high priority preferentially;
2) The priority is divided into two levels of priority forwarding and normal forwarding, the data packet with high encryption level is forwarded preferentially, and the data packet is forwarded preferentially according to the corresponding rule of the data packet sent by the user;
3) The data packet is forwarded to the target user through the forwarding module 3, and the target user obtains the data packet through the terminal equipment and checks the data packet after decrypting through the corresponding decryption technology.
In this embodiment, the data packet is processed in a common manner, and no corresponding custom flow table rule is set.
Example 2
As shown in fig. 1 to 3, the present embodiment proposes an operation method of an SDN switch 1, including the following steps:
step one: the user sends out data;
step two: receiving signals and forwarding;
step three: SDN controller processing and comparison;
step four: data grading and encryption;
step five: priority setting and forwarding;
the first step specifically comprises the following steps: 1) And (3) operation preparation: the method comprises the steps that the SDN switch 1 and a plurality of user terminals connected with the phase signals of the SDN switch 1 are included, encryption grade is set to be high, priority is set to be high, and the rule is set to be forwarded after uploading for 1 hour;
the SDN switch 1 comprises an SDN main control module 2, wherein the SDN main control module 2 is used for processing rules set by a user and guaranteeing the normal operation of the whole SDN switch 1;
the terminal of SDN main control module 2 is connected with transmitting module 3, recording module 4 and grading module 5 through the circuit separately, the terminal of recording module 4 is connected with contrast module 6 through the circuit, the terminal of grading module 5 is connected with encryption module 7 through the circuit, the terminal of encryption module 7 is connected with priority module 8 through the circuit;
the forwarding module 3 is used for forwarding the data packet sent by the user to other users or sending the data packet to the SDN main control module 2;
the recording module 4 is used for recording the information of the SDN main control module 2;
the grading module 5 is used for grading the encryption grade of the data packet;
the comparison module 6 is used for comparing the rule of the data packet recorded by the recording module 4 with the existing rule;
the encryption module 7 is used for encrypting the data packets classified by the classification module 5 to different degrees;
the priority module 8 is used for setting the priority of forwarding the encrypted data packet;
2) And (3) starting operation: and the user sends out a data packet to a forwarding module 3 in the SDN switch 1 through a terminal application layer APP.
The second step specifically comprises:
the forwarding module 3 receives the corresponding data packet signal and forwards the data packet signal to the SDN main control module 2.
The fourth step specifically comprises:
1) The data packet is sent to the grading module 5 through the SDN main control module 2 after passing through the step three, the encryption degree of the data packet is graded according to the corresponding requirement of the data packet sent by a user, the encryption grade is set to be high-grade, and encryption is carried out through an encryption salt technology;
2) The data packet is encrypted at a high level by the encryption module 7 according to the encryption classification of the data packet by the classification module 5.
The third step specifically comprises:
the SDN main control module 2 invokes the flow table of the recording module 4, the comparison module 6 compares the flow table with the packet header of the data packet, corresponding items are not compared, the data packet is processed according to the rule specified by the user through the SDN main control module 2, so that the subsequent forwarding of the data packet meets the rule set by the user, meanwhile, the new rule is recorded through the recording module 4, and the new specific rule is recorded in the flow table, so that the subsequent use is convenient, and the user-defined requirement can be met.
The fifth step specifically comprises:
1) According to the data packet requirements of a sending user, grading the priority of the data packets at the same time, and forwarding the data packets with high priority preferentially;
2) The priority is divided into two levels of priority forwarding and normal forwarding, the data packet with high encryption level is forwarded preferentially, and the data packet is forwarded preferentially according to the corresponding rule of the data packet sent by the user;
3) The data packet is forwarded to the target user through the forwarding module 3, and the target user obtains the data packet through the terminal equipment and checks the data packet after decrypting through the corresponding decryption technology.
It should be noted that, in practical application, the content recorded by the recording module 4 includes a name of a data packet forwarded by the forwarding module 3, a rule of a data packet newly set by a user, a level of the data packet classified by the classifying module 5, an encryption level of the data packet by the encrypting module 7, a priority setting of the data packet by the priority module 8, and necessary cache data generated when the SDN switch 1 operates;
after the recording module 4 records the new rule, the content of the flow table can correspondingly increase the rule, the SDN main control module 2 increases the corresponding rule and records the rule through the recording module 4 to form the latest flow table, so that a user can conveniently customize the network according to the actual situation of the user, and the diversified requirements of the user are met;
the grading module 5 is used for grading the data packets preferentially according to the definite grade set by the user, and the data packets are processed according to the low grade without the grade set by the user, so that faults caused by the fact that the grade is not set by the user are avoided;
the priority module 8 sets a definite priority to the data packet according to the user, and processes the data packet according to normal forwarding without setting the priority, so that faults caused by the fact that the priority is not set are avoided;
the method comprises the steps that firstly, a data packet is sent out, wherein the data packet comprises the content of the data packet, and further comprises any one or more of a custom rule, an encryption grade and a priority setting, so that the data packet can be attached to the actual use requirement of a user, one or more of the content can be added freely according to the requirement of the user, and only the data packet can be uploaded and sent according to the actual requirement;
the forwarding module 3 is connected with the user terminal through the 5G signal, so that the transmission and the use of a user are facilitated;
step five, after receiving the data packet, the target user decrypts the data packet in a corresponding decryption mode to obtain a decrypted data packet;
it should be noted that, the user sends and receives the data packet through the App on the terminal.
The invention can grade the forwarded data packet according to the needs of users, encrypt the data packet according to the graded grades to different degrees, forward the data packet according to different priorities, record the latest set rules and process the data packet according to the rules.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (10)
1. An operation method of an SDN switch is characterized by comprising the following steps:
step one: the user sends out data;
step two: receiving signals and forwarding;
step three: SDN controller processing and comparison;
step four: data grading and encryption;
step five: priority setting and forwarding;
the first step specifically comprises the following steps: 1) And (3) operation preparation: comprises a group of SDN switches (1) and a plurality of user terminals connected with the phase signals of the SDN switches (1);
the SDN switch (1) comprises an SDN main control module (2), wherein the SDN main control module (2) is used for processing rules set by a user and guaranteeing normal operation of the whole SDN switch (1);
the terminal of the SDN main control module (2) is respectively connected with a forwarding module (3), a recording module (4) and a grading module (5) through lines, the terminal of the recording module (4) is connected with a comparison module (6) through lines, the terminal of the grading module (5) is connected with an encryption module (7) through lines, and the terminal of the encryption module (7) is connected with a priority module (8) through lines;
the forwarding module (3) is used for forwarding the data packet sent by the user to other users or sending the data packet to the SDN main control module (2);
the recording module (4) is used for recording the information of the SDN main control module (2);
the grading module (5) is used for grading the encryption grade of the data packet;
the comparison module (6) is used for comparing the rule of the data packet recorded by the recording module (4) with the existing rule;
the encryption module (7) is used for encrypting the data packets classified by the classification module (5) to different degrees;
the priority module (8) is used for setting the priority of forwarding the encrypted data packet;
2) And (3) starting operation: and the user sends out a data packet to a forwarding module (3) in the SDN switch (1) through the terminal application layer APP.
The second step specifically comprises:
the forwarding module (3) receives the corresponding data packet signal and forwards the data packet signal to the SDN main control module (2).
The fourth step specifically comprises:
1) The data packet is sent to a grading module (5) through an SDN main control module (2) after the step three, the encryption degree of the data packet is graded according to the corresponding requirement of the data packet sent by a user, the encryption is divided into three grades, namely high grade, medium grade and low grade, the encryption salt encryption is adopted in the high grade, the medium grade is asymmetric encryption, and the low grade is symmetric encryption;
2) The data packets are encrypted and classified according to the classification module (5), and the data packets are encrypted to different degrees through the encryption module (7).
2. The SDN switch operating method of claim 1, wherein step three specifically includes:
the method comprises the following steps: the SDN main control module (2) invokes the flow table of the recording module (4), compares the flow table with the packet head of the data packet through the comparison module (6), compares out the matching item and then processes according to the set rule;
the second method is as follows: the SDN main control module (2) invokes a flow table of the recording module (4), the comparison module (6) compares the flow table with the packet header of the data packet, corresponding items are not compared, the data packet is processed according to the rule specified by the user through the SDN main control module (2), the subsequent forwarding of the data packet meets the rule set by the user, and meanwhile, the new rule is recorded through the recording module (4) and is recorded in the flow table.
3. The SDN switch operation method of claim 2, wherein step five specifically includes:
1) According to the data packet requirements of a sending user, grading the priority of the data packets at the same time, and forwarding the data packets with high priority preferentially;
2) The priority is divided into two levels of priority forwarding and normal forwarding, the data packet with high encryption level is forwarded preferentially, and the data packet is forwarded preferentially according to the corresponding rule of the data packet sent by the user;
3) And forwarding the data packet to a target user through a forwarding module (3), and obtaining the data packet by the target user through terminal equipment, decrypting the data packet through a corresponding decryption technology and checking the data packet.
4. The SDN switch operation method of claim 1, wherein the content recorded by the recording module (4) includes a name of a forwarding packet forwarded by the forwarding module (3), a rule of a new setting of the packet by a user, a level of the packet classified by the classifying module (5), an encryption level of the packet by the encrypting module (7), a priority setting of the packet by the priority module (8), and necessary cache data generated during operation of the SDN switch (1).
5. The operation method of an SDN switch of claim 4, wherein after the recording module (4) records a new rule, the content of the flow table is correspondingly increased by the rule, and the SDN master control module (2) adds the corresponding rule and records the rule through the recording module (4) to form the latest flow table.
6. The SDN switch operating method of claim 1, wherein the grading module (5) prioritizes grading of data packets according to user-defined grades, and wherein non-rated, low-grade processing is performed.
7. The SDN switch operation method of claim 1, wherein the priority module (8) sets a clear priority to the data packet according to a user, and processes the data packet according to normal forwarding without setting a priority.
8. The method of claim 1, wherein the sending the content of the data packet in the first step further includes one or more of custom rules, encryption levels, and priority settings.
9. The SDN switch operating method of claim 1, characterized in that the forwarding module (3) is associated with a user terminal by means of a 5G signal.
10. The operation method of an SDN switch as set forth in claim 3, wherein in step five, the target user obtains the decrypted data packet after receiving the data packet and decrypting the data packet by a corresponding decryption method.
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