WO2017128790A1 - Application bandwidth configuration method and controller based on software-defined networking - Google Patents

Abstract

The present invention provides an application bandwidth configuration method based on software-defined networking. The method comprises: a controller configures a flow control policy of an entire network; according to the flow control policy, the controller configures corresponding content of each application type; and, according to the flow control policy, the controller configures a total application assured-bandwidth percentage and a total application maximum bandwidth percentage corresponding to each application type. The present invention further provides an application bandwidth configuration controller based on software-defined networking. In this way, all configuration is performed by the controller, the application bandwidth policy is configured in a peer-to-peer manner and across an entire network, and link resources of the entire network are fully utilized so as to achieve network traffic optimization.

Description

Application bandwidth configuration method and controller based on software defined network Technical field

The present invention relates to the field of application bandwidth configuration technologies, and in particular, to a software bandwidth-defined network application bandwidth configuration method and controller.

Background technique

Software Defined Network (SDN) is a new network innovation architecture of Emulex network. It is an implementation of network virtualization. Its core technology, OpenFlow, separates the control plane of the network device from the data plane. Flexible control of network traffic makes the network more intelligent as a pipeline.

The traditional configuration application bandwidth policy is only based on the gateway node to configure the application bandwidth policy, as shown in FIG. 1 , which includes the telecommunications 1, the electric wire 2, the gateway, the network element S0, the network element S1, the network element S2, and the network element S3. And the user, the role of the gateway: 1, select the flow control strategy; 2, configure critical applications, common applications and suppression applications; 3, configure the proportion of total bandwidth occupied by each application group.

The traditional configuration application bandwidth policy is not based on the SDN architecture. The application bandwidth policy is configured based on the gateway node. The application bandwidth policy of the end-to-end and the entire network cannot be implemented. The inconsistency may occur and the expected effect is not achieved.

Summary of the invention

In view of this, the present invention provides a method for configuring an application bandwidth based on a software-defined network, the method comprising:

The controller configures a flow control policy of the entire network;

Configuring content corresponding to each application type according to the flow control policy;

Reconfiguring the total application security bandwidth percentage and total response corresponding to each application type according to the flow control policy Use the maximum bandwidth percentage.

Further, the policy types of the flow control policy include:

Corporate strategy, hotel strategy and university strategy,

Each of the policy types includes: a key application, a suppression application, and a general application;

The key applications of the enterprise policy and the hotel policy have the highest priority in configuring bandwidth and the lowest priority in suppressing configuration bandwidth obtained by the application;

The priority of the configured bandwidth obtained by each application of the hotel policy is not differentiated.

Further, the total application security bandwidth percentage and the total application maximum bandwidth percentage corresponding to each application type are reconfigured, including:

Configure the percentage of total application security bandwidth for each application type.

Configure the total application maximum bandwidth percentage corresponding to each application type.

The sum of the total application guaranteed bandwidth percentage corresponding to each application type and the total application maximum bandwidth percentage corresponding to each application type is less than 100%.

Further, after the total application security bandwidth percentage and the total application maximum bandwidth percentage corresponding to each application type are configured, the method further includes:

Calculate the network topology according to the LLDP protocol;

Receiving MAC address information, port information, and port rate information reported by the switch;

Receiving the unmatched flow table message reported by the switch;

Parsing the received packet of the unmatched flow table, and obtaining a packet MAC address and a seven-layer application signature;

Calculating a forwarding path according to the network topology, the packet MAC address, and the port information;

Calculating a port forwarding rate according to the rate information, the seven-layer application signature, and the flow control policy table;

The flow table is delivered according to the forwarding path and the outbound port forwarding rate.

Further, the calculating the port forwarding rate according to the rate information, the layer 7 application signature, and the flow control policy table, specifically includes:

Confirm the type of the flow control policy based on the MAC address of the packet.

Confirming the packet type according to the seven-layer application signature;

Confirming the corresponding application type according to the packet type;

Obtaining a corresponding total application guaranteed bandwidth percentage and a total application maximum bandwidth percentage according to the application type;

Calculate the total application outbound port guaranteed bandwidth rate based on the total application guaranteed bandwidth percentage and port rate information.

Calculate the maximum bandwidth rate of the total application outgoing port based on the total application maximum bandwidth percentage and port rate information.

Further, the total application outbound port guaranteed bandwidth rate is calculated according to the total application guaranteed bandwidth percentage and the port rate information, and specifically includes:

Calculate the port-guaranteed bandwidth rate of the critical application application based on the bandwidth percentage and port rate information of the critical application.

According to the percentage of the total application guaranteed bandwidth and the port rate information, the total application outbound port guaranteed bandwidth rate is calculated.

According to the percentage of the total application guaranteed bandwidth and the port rate information of the common application, the total application outbound port guaranteed bandwidth rate is calculated.

Further, the calculating the maximum bandwidth rate of the total application outgoing port according to the total application maximum bandwidth percentage and the port rate information, specifically includes:

Calculate the maximum bandwidth rate of the total application outbound port of the critical application according to the maximum application bandwidth percentage and port rate information of the critical application;

Calculate the maximum bandwidth rate of the total application outbound port of the proposed application according to the maximum bandwidth percentage and port rate information of the proposed application.

The maximum bandwidth rate of the total application outbound port of the common application is calculated according to the maximum bandwidth percentage and port rate information of the general application.

Further, before the flow control policy of the entire network is configured on the controller, an extended packet is set on the controller, and the format of the extended packet is:

Own MAC address field, indicating the MAC address of the switch;

Speed field, indicating the port rate of the switch;

Port id field, indicating the port of the switch.

Further, the flow table includes a matching field and an action field.

The matching field includes: a seven-layer application signature;

The action field includes an application type, a total application outbound guaranteed bandwidth rate, and a total application outgoing port maximum bandwidth rate; the application type includes a key application, a general application, and a suppression application;

The total application outbound port guarantee bandwidth rate refers to the bandwidth rate of such applications when the bandwidth is tight;

The maximum bandwidth rate of the total application outgoing port refers to the maximum port rate allowed by such applications when the bandwidth is sufficient.

The invention also provides an application bandwidth configuration controller based on a software defined network, the controller comprising:

The first configuration module is configured to configure a flow control policy of the entire network.

a second configuration module, configured to configure content corresponding to each application type according to the flow control policy;

The third configuration module is configured to reconfigure the total application guaranteed bandwidth percentage and the total applied maximum bandwidth percentage corresponding to each application type according to the flow control policy.

Further, the third configuration module configures a total application guaranteed bandwidth percentage and a total application maximum bandwidth percentage corresponding to each application type, and specifically includes:

The first configuration submodule is configured to configure a percentage of the total application guarantee bandwidth corresponding to each application type;

a second configuration submodule configured to configure a total application maximum bandwidth percentage corresponding to each application type;

The sum of the total application guaranteed bandwidth percentage corresponding to each application type and the total application maximum bandwidth percentage corresponding to each application type is less than 100%.

Further, after the third configuration module configures the total application guarantee bandwidth percentage and the total application maximum bandwidth percentage corresponding to each application type, the controller further includes:

a first calculating module, configured to calculate a network topology according to the LLDP protocol;

a first receiving module, configured to receive MAC address information, port information, and port rate information reported by the switch;

a second receiving module, configured to receive an unmatched flow table message reported by the switch;

a parsing module, configured to parse the received packet of the unmatched flow table, and obtain a packet MAC address and a seven-layer application signature;

a second calculating module, configured to calculate a forwarding path according to the network topology, the packet MAC address, and the port information;

a third calculating module, configured to calculate a port forwarding rate according to the rate information, the seven-layer application signature, and the flow control policy table;

The sending module is configured to deliver the flow table according to the forwarding path and the outbound port forwarding rate.

Further, the third calculating module calculates the port forwarding rate according to the rate information, the seven-layer application signature, and the flow control policy table, and specifically includes:

a first confirmation submodule, configured to confirm a flow control policy type according to a packet MAC address;

a second confirmation submodule, configured to confirm a packet type according to the seventh layer application signature of the packet;

a third confirmation submodule, configured to confirm a corresponding application type according to the packet type;

Obtaining a sub-module, configured to obtain a corresponding total application security bandwidth percentage and a total application maximum bandwidth percentage according to the application type;

a first calculation submodule, configured to calculate a total application outbound port guaranteed bandwidth rate according to the total application guaranteed bandwidth percentage and the port rate information;

The second calculating submodule is configured to calculate a maximum bandwidth rate of the total application outgoing port according to the total application maximum bandwidth percentage and the port rate information.

Further, the first calculating sub-module calculates the total application outgoing port guaranteed bandwidth rate according to the total application guaranteed bandwidth percentage and the port rate information, and specifically includes:

The first calculating sub-unit is configured to calculate a port-guaranteed bandwidth rate of the critical application total application according to the percentage of the critical application total application guarantee bandwidth and the port rate information;

a second calculation subunit for protecting the bandwidth percentage and port rate information according to the total application application bandwidth Calculate the rate of the guaranteed bandwidth of the application application outbound port;

The third calculating sub-unit is configured to calculate a port-guaranteed bandwidth rate of the general application-out port according to the percentage of the total application-assured bandwidth and the port rate information of the common application.

Further, the second calculating sub-module calculates the maximum bandwidth rate of the total application outgoing port according to the total application maximum bandwidth percentage and the port rate information, and specifically includes:

a fourth calculating sub-unit, configured to calculate a maximum bandwidth rate of the total application outbound port of the critical application according to the maximum application percentage of the critical application and the port rate information;

a fifth calculating sub-unit, configured to calculate a maximum bandwidth rate of the total application outgoing port of the proposed application according to the maximum application bandwidth percentage and port rate information of the application application;

The sixth calculating sub-unit is configured to calculate a maximum bandwidth rate of the general application outbound port of the common application according to the total application bandwidth maximum percentage and the port rate information of the common application.

The present invention configures a flow control policy of the entire network; configures corresponding content of each application type according to the flow control policy; and reconfigures the total application guaranteed bandwidth percentage and the total applied maximum bandwidth percentage corresponding to each application type according to the flow control policy. . In this way, the centralized configuration of the controller is adopted to implement the end-to-end and the entire network configuration application bandwidth policy, and the link resources of the entire network are fully utilized to optimize the network traffic optimization.

DRAWINGS

FIG. 1 is a schematic structural diagram of a traditional application bandwidth configuration policy;

2 is a flowchart of an embodiment of a method for configuring an application bandwidth based on a software-defined network according to the present invention;

3 is a flowchart of an embodiment of a method for configuring a total application guaranteed bandwidth percentage and a total applied maximum bandwidth percentage corresponding to each application type according to the present invention;

4 is a flowchart of an embodiment of a processing method after configuring a total application guaranteed bandwidth percentage and a total application maximum bandwidth percentage corresponding to each application type according to the present invention;

5 is a flowchart of an embodiment of a method for calculating a port forwarding rate according to the rate information, a layer 7 application signature, and a flow control policy table according to the present invention;

FIG. 6 is a calculation of a maximum/guaranteed bandwidth percentage and a port rate according to different application types according to the present invention. Flowchart of an embodiment of a total application out port maximum/guaranteed bandwidth rate;

7 is a flowchart of an embodiment of a method for calculating a total application outgoing port guaranteed bandwidth rate according to a total application guaranteed bandwidth percentage and port rate information according to the present invention;

8 is a flowchart of an embodiment of a method for calculating a maximum bandwidth rate of a total application outgoing port according to a total application maximum bandwidth percentage and port rate information according to the present invention;

9 is a format of a private extension packet from a controller to a switch according to the present invention;

10 is a schematic structural diagram of an embodiment of an application bandwidth configuration controller application system based on a software-defined network according to the present invention;

11 is a structural diagram of another embodiment of an application bandwidth configuration controller based on a software-defined network according to the present invention;

12 is a structural diagram of an embodiment of a third configuration module of an application bandwidth configuration controller based on a software-defined network according to the present invention;

13 is a structural diagram of another embodiment of an application bandwidth configuration controller based on a software-defined network according to the present invention;

14 is a structural diagram of an embodiment of a third computing module of an application bandwidth configuration controller based on a software-defined network according to the present invention;

15 is a structural diagram of an embodiment of a first computing module of an application bandwidth configuration controller based on a software-defined network according to the present invention;

16 is a structural diagram of an embodiment of a second computing module of an application bandwidth configuration controller based on a software-defined network according to the present invention;

FIG. 17 is a schematic diagram of a specific application of an application bandwidth configuration controller based on a software-defined network according to the present invention.

detailed description

The technical solution of the present invention configures a flow control policy of the entire network; configures corresponding content of each application type according to the flow control policy; and reconfigures the total application support bandwidth percentage and the total application maximum corresponding to each application type according to the flow control policy. The percentage of bandwidth. In this way, the controller is centrally configured to achieve end-to-end And the application of the bandwidth policy of the entire network, will make full use of the link resources of the entire network to achieve optimal network traffic optimization.

The present invention will be further described in detail below with reference to the accompanying drawings.

2 is a flowchart of an embodiment of a method for configuring an application bandwidth based on a software-defined network according to the present invention. The specific process is as follows:

Step S201, the controller configures a flow control policy of the entire network.

Specifically, the types of policies of the flow control strategy include: enterprise flow control strategy, hotel flow control strategy, and university flow control strategy.

Each of the flow control policy types includes: a critical application, a suppression application, and a general application;

The key applications of the enterprise flow control policy and the hotel flow control strategy have the highest priority of the configured bandwidth, and the key applications of the suppression flow control strategy have the lowest priority;

The priority of the configured bandwidth obtained by each application of the hotel's flow control strategy is not differentiated.

Step S202, configuring content corresponding to each application type according to the flow control policy;

Specifically, the corporate strategy:

Key application content: instant messaging software, IP network phone, email protocol, common web browsing, general web browsing details, security protocols, VPN applications, office OA, video conferencing, DNS;

Suppress application content: P2P application software, video streaming software, Internet file transfer, download tool, unknown web page, network hard disk;

General application content: not listed in the above two types of applications;

Among them, the priority of the key application is the highest, the priority of the common application is the second, and the priority of the application is the lowest.

Hotel strategy:

Key application content: instant messaging software, IP network phone, online game software, email protocol, general web browsing, general web browsing details, security protocols, VPN applications, Weibo, instant messaging, games, social, DNS;

The content of the proposed application: P2P application software, video streaming software, Internet file transfer, download tool, unknown web page, network hard disk;

General application content: not listed in the above two types of applications;

Among them, the key application obtains the highest bandwidth priority, the common application obtains the bandwidth priority, and the suppression application obtains the bandwidth with the lowest priority.

University strategy:

The priority of various applications is not differentiated, the bandwidth is fully utilized when the bandwidth is sufficient, and the bandwidth is allocated based on the user when the bandwidth is tight.

Step S203, reconfigure the total application guarantee bandwidth percentage and the total application maximum bandwidth percentage corresponding to each application type according to the flow control policy.

Specifically, the total application guarantee bandwidth refers to the bandwidth occupied by various applications when the bandwidth is tight;

The total application maximum bandwidth refers to the bandwidth allowed by various types of applications when the bandwidth is sufficient, and the value is not less than the total application guaranteed bandwidth;

The sum of the total application guaranteed bandwidth percentage and the total applied maximum bandwidth percentage corresponding to each application type is less than 100%.

The process of the embodiment of the method for configuring the total application guaranteed bandwidth percentage and the total application maximum bandwidth percentage corresponding to each application type in step S203 is as shown in FIG. 3, and the specific process is as follows:

Step S301, configuring a percentage of total application support bandwidth corresponding to each application type;

Specifically, the configuration options include: a percentage of the total application application guaranteed bandwidth of the critical application, a percentage of the total application total guaranteed bandwidth, and a percentage of the total application guaranteed bandwidth of the suppressed application.

Step S302, configuring a total application maximum bandwidth percentage corresponding to each application type.

Specifically, the configuration options include: the maximum bandwidth percentage of the total application application maximum bandwidth, the percentage of the maximum bandwidth of the general application total application, and the percentage of the maximum application bandwidth of the total application application.

The sum of the total application guaranteed bandwidth percentage and the total applied maximum bandwidth percentage corresponding to each application type is less than 100%.

4 is a percentage of total application guaranteed bandwidth corresponding to each application type configured according to the present invention and a maximum application maximum A flowchart of an embodiment of a processing method after a bandwidth percentage, the specific process is as follows:

Step S401, calculating a network topology according to the LLDP protocol;

Specifically, LLDP (Link Layer Discovery Protocol) is a Layer 2 protocol that allows devices to advertise their device ID and performance in the local subnet.

Step S402, receiving MAC address information, port information, and port rate information reported by the switch.

Specifically, the controller receives and pre-stores MAC address information, port information, and rate information of the switch reported by the switch.

Step S403, receiving an unmatched flow table message reported by the switch;

Step S404, parsing the received packet of the unmatched flow table, and obtaining a packet MAC address and a seven-layer application signature.

Specifically, the seven-layer application feature code is accurately identified, and different intelligent bandwidth policies are provided according to the priority of various applications, and the key applications of the Internet cafe, such as games and web pages, are preferentially guaranteed to run smoothly.

Step S405, calculating a forwarding path according to the network topology, the packet MAC address, and the port information.

Specifically, the packet MAC address refers to the MAC address of the destination switch.

Step S406, calculating a port forwarding rate according to the rate information, the seven-layer application signature, and the flow control policy table.

Step S407, the flow table is delivered according to the forwarding path and the outbound port forwarding rate.

Specifically, the definition of the flow table is as follows:

Table 1

The method for calculating the port forwarding rate according to the rate information, the seven-layer application signature, and the flow control policy table is shown in FIG. 5, and the specific process is as follows:

Step S501, confirming a flow control policy type according to the packet MAC address;

Specifically, the types of flow control policies include: enterprise flow control strategy, hotel flow control strategy, and college flow control strategy.

Step S502, confirming a packet type according to the seven-layer application signature.

Specifically, after the flow control policy type is confirmed, the corresponding packet type can be obtained by using the seven-layer application signature, and the packet type is specifically the content of each application introduced in FIG.

Step S503, confirming a corresponding application type according to the packet type;

Specifically, the corresponding application type can be found according to the packet type, and the application types include: a critical application, a suppression application, and a general application.

Step S504, obtaining a corresponding total application security bandwidth percentage and a total application maximum bandwidth percentage according to the application type;

Step S505, calculating a total application outbound port guaranteed bandwidth rate according to the total application guaranteed bandwidth percentage and the port rate information;

Specifically, the total application port guarantee bandwidth rate = total application guaranteed bandwidth percentage * port rate information.

Step S506, calculating a maximum bandwidth rate of the total application outgoing port according to the total application maximum bandwidth percentage and the port rate information.

Specifically, the total application port maximum bandwidth rate = total application maximum bandwidth percentage * port rate information.

FIG. 6 is a flowchart of an embodiment of calculating a maximum/guaranteed bandwidth rate of a total application outgoing port according to a maximum/guaranteed bandwidth percentage and a port rate of different application types, and the specific process is as follows:

Step S601, determining a packet type according to the seven-layer feature code of the packet;

Step S602, querying the flow control policy table to identify an application type;

Step S603, confirm the application type?

Specifically, when the application type is a key application, proceed to step S605; when the application type is a normal type, proceed to step S606; when the application type is a suppression application, proceed to step S604;

Step S604, suppressing the application total application guarantee bandwidth percentage and suppressing the application total application maximum bandwidth percentage, proceeds to step S607;

Step S605, the critical application total application guarantee bandwidth percentage and the critical application total application maximum bandwidth percentage, proceeds to step S607;

In step S606, the general application total application guarantee bandwidth percentage and the general application total application maximum bandwidth percentage, proceed to step S607.

Step S607, calculating a total application outgoing port guaranteed bandwidth rate and a total application outgoing port maximum bandwidth rate;

Specifically, the total application port guarantee bandwidth rate = total application guaranteed bandwidth percentage * port rate; total application out port maximum bandwidth rate = total application maximum bandwidth percentage * port rate.

FIG. 7 is a flowchart of an embodiment of a method for calculating a total application outgoing port guaranteed bandwidth rate according to the total application guaranteed bandwidth percentage and port rate information, and the specific process is as follows:

Step S701, calculating, according to the percentage of the critical application total application guarantee bandwidth and the port rate information, the port application guaranteed bandwidth rate of the critical application application port;

Specifically, the critical application always applies the port guaranteed bandwidth rate = key application total application guaranteed bandwidth percentage * port rate information.

Step S702, calculating, according to the total application protection bandwidth percentage and the port rate information of the application, the suppression of the application application outbound port guarantee bandwidth rate;

Specifically, the application total application outbound guaranteed bandwidth rate = suppression application total application guaranteed bandwidth percentage * port rate information is suppressed.

In step S703, the total application application port guarantee bandwidth rate of the common application is calculated according to the percentage of the common application guarantee bandwidth and the port rate information.

Specifically, the general application port application bandwidth rate = common application total application guaranteed bandwidth percentage * port rate information.

FIG. 8 is a flowchart of an embodiment of a method for calculating a maximum bandwidth rate of a total application outgoing port according to a total application maximum bandwidth percentage and port rate information, and the specific process is as follows:

Step S801: Calculate a maximum bandwidth rate of the total application outbound port of the critical application according to the maximum application bandwidth percentage and the port rate information of the critical application.

Specifically, the critical application always applies the port maximum bandwidth rate = key application total application maximum bandwidth percentage * port rate information.

Step S802, calculating, according to the total application maximum application percentage percentage and the port rate information, the maximum bandwidth rate of the application application outbound port is suppressed;

Specifically, the application total application out port maximum bandwidth rate = suppression application total application maximum bandwidth percentage * port rate information is suppressed.

Step S803: Calculate the maximum bandwidth rate of the general application outbound port of the common application according to the total application bandwidth maximum percentage and the port rate information of the common application.

Specifically, the general application always applies the port maximum bandwidth rate=general application total application maximum bandwidth percentage* port rate information.

FIG. 9 is a format of a private extension packet from a controller to a switch according to the present invention. The specific format is:

The private extension packet from the controller to the switch is extended on the basis of the original packet definition. The format of the original definition packet is: an Experimenter value of 255 needs to be applied to the ONF organization. A Experimenter type value of 1 indicates that it is from the SDN switch to the controller.

The extended definition message format is:

The switch's Own MAC address (referred to as the MAC address) can be used as the identifier of the switch;

Speed indicates the rate of this port (10M/100M/1000M/10G/40G/100G);

Port id 1 indicates the switch port 1 of the SDN (Software Defined Network) switch;

Port id 128 indicates the switch port 128 of the SDN (Software Defined Network) switch.

10 is a schematic structural diagram of an embodiment of an application bandwidth configuration controller application system based on a software-defined network according to the present invention. The specific structure includes: an SDN controller, a telecommunications 1, a wire 2, a gateway, a network element S0, and a network element S1. Network element S2, network element S3 and user, wherein the SDN controller is configured Bandwidth policy, the specific role is: 1, select the flow control strategy; 2, configure critical applications, common applications and suppression applications; 3, configure the proportion of the total bandwidth occupied by each application group; and after the configuration, the SND controller separately to the network element S0, the network element S1, the network element S2, the network element S3, and the gateway respectively send a flow table.

FIG. 11 is a schematic structural diagram of an embodiment of an application bandwidth configuration controller based on a software-defined network, where the controller 900 includes a first configuration module 901, a second configuration module 902, and a third configuration module 903.

The first configuration module 901 is configured to configure a flow control policy of the entire network.

Specifically, the types of policies of the flow control strategy include: enterprise flow control strategy, hotel flow control strategy, and university flow control strategy.

Each of the flow control policy types includes: a critical application, a suppression application, and a general application;

The key applications of the enterprise flow control policy and the hotel flow control strategy have the highest priority of the configured bandwidth, and the key applications of the suppression flow control strategy have the lowest priority;

The priority of the configured bandwidth obtained by each application of the hotel's flow control strategy is not differentiated.

The second configuration module 902 is configured to configure content corresponding to each application type according to the flow control policy;

Specifically, the corporate strategy:

Key application content: instant messaging software, IP network phone, email protocol, common web browsing, general web browsing details, security protocols, VPN applications, office OA, video conferencing, DNS;

Suppress application content: P2P application software, video streaming software, Internet file transfer, download tool, unknown web page, network hard disk;

General application content: not listed in the above two types of applications;

Among them, the priority of the key application is the highest, the priority of the common application is the second, and the priority of the application is the lowest.

Hotel strategy:

Key application content: instant messaging software, IP network phone, online game software, email protocol, general web browsing, general web browsing details, security protocols, VPN applications, Weibo, instant messaging, games, social, DNS;

The content of the proposed application: P2P application software, video streaming software, Internet file transfer, download tool, unknown web page, network hard disk;

General application content: not listed in the above two types of applications;

Among them, the key application obtains the highest bandwidth priority, the common application obtains the bandwidth priority, and the suppression application obtains the bandwidth with the lowest priority.

University strategy:

The priority of various applications is not differentiated, the bandwidth is fully utilized when the bandwidth is sufficient, and the bandwidth is allocated based on the user when the bandwidth is tight.

The third configuration module 903 is configured to reconfigure the total application guaranteed bandwidth percentage and the total applied maximum bandwidth percentage corresponding to each application type according to the flow control policy.

Specifically, the total application guarantee bandwidth refers to the bandwidth occupied by various applications when the bandwidth is tight;

The total application maximum bandwidth refers to the bandwidth allowed by various types of applications when the bandwidth is sufficient, and the value is not less than the total application guaranteed bandwidth;

The sum of the total application guaranteed bandwidth percentage and the total applied maximum bandwidth percentage corresponding to each application type is less than 100%.

The specific configuration of the third configuration module 903 is as shown in FIG. 12, and the specific third configuration module 903 includes a first configuration submodule 9031, a second configuration submodule 9032, and a third configuration submodule 9033.

The first configuration submodule 9031 is configured to configure a percentage of the total application guarantee bandwidth corresponding to each application type;

Specifically, the percentage of the critical application total application guarantee bandwidth, the percentage of the general application total application guaranteed bandwidth, and the percentage of the total application guaranteed bandwidth of the application are configured.

The second configuration sub-module 9032 is configured to configure a total application maximum bandwidth percentage corresponding to each application type.

Specifically, configuring a maximum application bandwidth percentage of a critical application total application, a total application total application maximum bandwidth percentage, and a suppression application total application maximum bandwidth percentage;

The total application guaranteed bandwidth percentage and the total application maximum band corresponding to each application type are configured. The sum of the width percentages is less than 100%.

FIG. 13 is a structural diagram of another embodiment of an application bandwidth configuration controller based on a software-defined network according to the present invention. The third configuration module 903 reconfigures the total application guaranteed bandwidth percentage and total amount corresponding to each application type according to the flow control policy. After the maximum bandwidth percentage is applied, the controller 900 further includes a first calculating module 904, a first receiving module 905, a second receiving module 906, a parsing module 907 and a second calculating module 908, a third calculating module 909, and a sending module 910.

a first calculation mode 904, configured to calculate a network topology according to the LLDP protocol;

Specifically, LLDP (Link Layer Discovery Protocol) is a Layer 2 protocol that allows devices to advertise their device ID and performance in the local subnet.

The first receiving module 905 is configured to receive MAC address information, port information, and port rate information reported by the switch.

Specifically, the controller receives and pre-stores MAC address information, port information, and rate information of the switch reported by the switch.

The second receiving module 906 is configured to receive the unmatched flow table message reported by the switch.

The parsing module 907 is configured to parse the received packet of the unmatched flow table, and obtain a packet MAC address and a seven-layer application signature.

Specifically, the seven-layer application feature code is accurately identified, and different intelligent bandwidth policies are provided according to the priority of various applications, and the key applications of the Internet cafe, such as games and web pages, are preferentially guaranteed to run smoothly.

The second calculating module 908 is configured to calculate a forwarding path according to the network topology, the packet MAC address, and the port information.

Specifically, the packet MAC address refers to the MAC address of the destination switch.

The third calculating module 909 is configured to calculate a port forwarding rate according to the rate information, the layer 7 application signature, and the flow control policy table.

The sending module 909 is configured to deliver the flow table according to the forwarding path and the outbound port forwarding rate.

14 is a structural diagram of an embodiment of a third computing module of an application bandwidth configuration controller based on a software-defined network according to the present invention. The third computing module 909 includes a first confirmation sub-module 9011 and a second acknowledgator. a module 9092, a third confirmation submodule 9093, an acquisition submodule 9094, a first calculation submodule 9095, and a second calculation submodule 9096,

The first confirmation sub-module 9091 is configured to confirm the flow control policy type according to the packet MAC address;

Specifically, the types of flow control policies include: enterprise flow control strategy, hotel flow control strategy, and college flow control strategy.

The second confirmation sub-module 9092 is configured to confirm the packet type according to the application layer signature of the packet.

Specifically, after the flow control policy type is confirmed, the corresponding packet type can be obtained by using the seven-layer application signature, and the packet type is specifically the content of each application introduced in FIG.

a third confirmation submodule 9093, configured to confirm a corresponding application type according to the packet type;

Specifically, in particular, according to the packet type, a corresponding application type can be found, and the application types include: a key application, a suppression application, and a general application.

The obtaining sub-module 9094 is configured to obtain a corresponding total application guaranteed bandwidth percentage and a total applied maximum bandwidth percentage according to the application type;

The first calculating sub-module 9095 is configured to calculate a total application outgoing port guaranteed bandwidth rate according to the total application guaranteed bandwidth percentage and the port rate information;

Specifically, specifically, the port security bandwidth rate=total application guaranteed bandwidth percentage*port rate information is always applied.

The second calculating sub-module 9096 is configured to calculate a maximum bandwidth rate of the total application outgoing port according to the total application maximum bandwidth percentage and the port rate information.

Specifically, the total application port maximum bandwidth rate = total application maximum bandwidth percentage * port rate information.

15 is a structural diagram of an embodiment of a first computing module of an application bandwidth configuration controller based on a software-defined network, where the first computing sub-module 9095 includes a first computing sub-unit 90951, a second computing sub-unit 90952, and a third Calculation subunit 90953,

The first calculating sub-unit 90951 is configured to calculate, according to the critical application total application guaranteed bandwidth percentage and the port rate information, a critical application total application outbound port guaranteed bandwidth rate;

Specifically, the critical application always applies the port guaranteed bandwidth rate = key application total application guaranteed bandwidth percentage * port rate information.

The second calculating sub-unit 90952 is configured to calculate, according to the total application protection bandwidth percentage and the port rate information of the suppression application, the suppression application application outbound port guarantee bandwidth rate;

Specifically, the application total application outbound guaranteed bandwidth rate = suppression application total application guaranteed bandwidth percentage * port rate information is suppressed.

The third calculating sub-unit 90953 is configured to calculate, according to the general application total application guaranteed bandwidth percentage and the port rate information, a common application outbound port guaranteed bandwidth rate.

Specifically, the general application port application bandwidth rate = common application total application guaranteed bandwidth percentage * port rate information.

16 is a structural diagram of an embodiment of a second computing module of an application bandwidth configuration controller based on a software-defined network, where the second computing sub-module 9096 includes a fourth computing sub-module 90961, a fifth computing sub-module 90962, and a sixth Calculation sub-module 90963,

The fourth calculating sub-unit 90961 is configured to calculate a maximum bandwidth rate of the total application outbound port of the critical application according to the maximum application percentage of the critical application and the port rate information;

Specifically, the critical application always applies the port maximum bandwidth rate = key application total application maximum bandwidth percentage * port rate information.

The fifth computing sub-module 90962 is configured to calculate a maximum bandwidth rate of the total application outgoing port according to the total application bandwidth percentage and port rate information of the application application;

Specifically, the application total application out port maximum bandwidth rate = suppression application total application maximum bandwidth percentage * port rate information is suppressed.

The sixth calculation sub-module 90963 is configured to calculate a maximum bandwidth rate of the general application output port of the common application according to the total application maximum bandwidth percentage and the port rate information of the common application.

Specifically, the general application always applies the port maximum bandwidth rate=general application total application maximum bandwidth percentage* port rate information.

17 is a schematic diagram of a specific application of an application bandwidth configuration controller based on a software-defined network according to the present invention;

The networking environment is: enterprise flow control policy, the DNS traffic is critical traffic, and the P2P application is to suppress traffic. The traffic of all bandwidths can be 1G.

Test specific steps:

Step 1. Networking according to the test environment;

Step 2, the percentage of the guaranteed bandwidth of the critical application is 50%, and the percentage of the guaranteed bandwidth of the suppressed application is 20%;

Step 3: When the link is congested, the DNS traffic is 500M, and the P2P application traffic is 200M.

Step 4: Modify the percentage of the guaranteed bandwidth of the critical application to 70%, and suppress the guaranteed bandwidth of the application to 10%;

Step 5: When the link is congested, the DNS traffic is 700M, and the P2P application traffic is 100M.

It should be understood that the functional modules of the DNS controller 900 provided by this embodiment may be software modules or functional modules combined with software and hardware, which may be implemented by a processor to implement the functions as described above. In addition, the DNS controller 900 may also have other functional modules to implement the specific steps of the application of the bandwidth policy method for the end-to-end and the whole network. For details, refer to the corresponding description of the foregoing method embodiments.

In addition, those skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by hardware related to program instructions, and the foregoing programs may be stored in a computer readable storage medium and communicated internally. The processor executes, and when the aforementioned program is executed, the processor can execute all or part of the steps including the above method embodiments. The processor may be implemented as one or more processor chips, or may be part of one or more application specific integrated circuits (ASICs); and the foregoing storage medium may include but not be limited to the following types. Storage medium: Flash memory, Read-Only Memory (ROM), Random Access Memory (RAM), removable hard disk, disk or optical disk, and other media that can store program code.

Finally, it should be noted that the above embodiments are only used to explain the technical solutions of the present application, and are not limited thereto; although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still Modify the technical solutions described in the foregoing embodiments, or Some of the technical features are equivalently substituted; and the modifications or substitutions do not deviate from the scope of the technical solutions of the embodiments of the present application.

Claims (15)

1. A method for configuring an application bandwidth based on a software-defined network, the method comprising:

   The controller configures a flow control policy of the entire network;

   Configuring content corresponding to each application type according to the flow control policy;

   The total application guaranteed bandwidth percentage and the total applied maximum bandwidth percentage corresponding to each application type are reconfigured according to the flow control policy.
2. The method of claim 1, wherein the policy type of the flow control policy comprises:

   Enterprise flow control strategy, hotel flow control strategy and university flow control strategy,

   Each of the flow control policy types includes: a critical application, a suppression application, and a general application;

   The key applications of the enterprise flow control policy and the hotel flow control strategy have the highest priority of the configured bandwidth and the lowest priority of the configured bandwidth obtained by the suppression application;

   The priority of the configured bandwidth obtained by each application of the hotel's flow control strategy is not differentiated.
3. The method according to claim 2, wherein the reconfiguring the total application guaranteed bandwidth percentage and the total application maximum bandwidth percentage corresponding to each application type include:

   Configure the percentage of total application security bandwidth for each application type.

   Configure the total application maximum bandwidth percentage corresponding to each application type.

   The sum of the total application guaranteed bandwidth percentage corresponding to each application type and the total application maximum bandwidth percentage corresponding to each application type is less than 100%.
4. The method of claim 3, wherein after the total application guaranteed bandwidth percentage and the total applied maximum bandwidth percentage corresponding to each application type are configured, the method further includes:

   Calculate the network topology according to the LLDP protocol;

   Receiving MAC address information, port information, and port rate information reported by the switch;

   Receiving the unmatched flow table message reported by the switch;

   Parsing the received packet of the unmatched flow table, and obtaining a packet MAC address and a seven-layer application signature;

   Calculating a forwarding path according to the network topology, the packet MAC address, and the port information;

   Calculating a port forwarding rate according to the rate information, the seven-layer application signature, and the flow control policy table;

   The flow table is delivered according to the forwarding path and the outbound port forwarding rate.
5. The method according to claim 4, wherein the calculating the port forwarding rate according to the rate information, the seven-layer application signature, and the flow control policy table includes:

   Confirm the type of the flow control policy based on the MAC address of the packet.

   Confirming the packet type according to the seven-layer application signature;

   Confirming the corresponding application type according to the packet type;

   Obtaining a corresponding total application guaranteed bandwidth percentage and a total application maximum bandwidth percentage according to the application type;

   Calculate the total application outbound port guaranteed bandwidth rate based on the total application guaranteed bandwidth percentage and port rate information.

   Calculate the maximum bandwidth rate of the total application outgoing port based on the total application maximum bandwidth percentage and port rate information.
6. The method of claim 5, wherein the total application outbound port guaranteed bandwidth rate is calculated according to the total application guaranteed bandwidth percentage and the port rate information, and specifically includes:

   Calculate the port-guaranteed bandwidth rate of the critical application application based on the bandwidth percentage and port rate information of the critical application.

   According to the percentage of the total application guaranteed bandwidth and the port rate information, the total application outbound port guaranteed bandwidth rate is calculated.

   According to the percentage of the total application guaranteed bandwidth and the port rate information of the common application, the total application outbound port guaranteed bandwidth rate is calculated.
7. The method according to claim 5, wherein the calculating the maximum bandwidth rate of the total application outgoing port according to the total application maximum bandwidth percentage and the port rate information, specifically:

   Calculate the maximum bandwidth rate of the total application outbound port of the critical application according to the maximum application bandwidth percentage and port rate information of the critical application;

   Calculate the total application of the proposed application based on the maximum bandwidth percentage and port rate information of the proposed application total application. Apply the maximum bandwidth rate of the outgoing port;

   The maximum bandwidth rate of the total application outbound port of the common application is calculated according to the maximum bandwidth percentage and port rate information of the general application.
8. The method of claim 1, wherein before the flow control policy of the entire network is configured on the controller, an extended packet is set on the controller, and the format of the extended packet is:

   Own MAC address field, indicating the MAC address of the switch;

   Speed field, indicating the port rate of the switch;

   Port id field, indicating the port of the switch.
9. The method of claim 4 wherein said flow table comprises a matching field and an action field.

   The matching field includes: a seven-layer application signature;

   The action field includes an application type, a total application outbound guaranteed bandwidth rate, and a total application outgoing port maximum bandwidth rate; the application type includes a key application, a general application, and a suppression application;

   The total application outbound port guarantee bandwidth rate refers to the bandwidth rate of such applications when the bandwidth is tight;

   The maximum bandwidth rate of the total application outgoing port refers to the maximum port rate allowed by such applications when the bandwidth is sufficient.
10. An application bandwidth configuration controller based on a software-defined network, wherein the controller comprises:

    The first configuration module is configured to configure a flow control policy of the entire network.

    a second configuration module, configured to configure content corresponding to each application type according to the flow control policy;

    The third configuration module is configured to reconfigure the total application guaranteed bandwidth percentage and the total applied maximum bandwidth percentage corresponding to each application type according to the flow control policy.
11. The controller according to claim 10, wherein the third configuration module configures a total application guaranteed bandwidth percentage and a total application maximum bandwidth percentage corresponding to each application type, and specifically includes:

    The first configuration submodule is configured to configure a percentage of the total application guarantee bandwidth corresponding to each application type;

    a second configuration submodule configured to configure a total application maximum bandwidth percentage corresponding to each application type;

    The sum of the total application guaranteed bandwidth percentage corresponding to each application type and the total application maximum bandwidth percentage corresponding to each application type is less than 100%.
12. The controller of claim 11, wherein after the third configuration module configures the total application support bandwidth percentage and the total application maximum bandwidth percentage corresponding to each application type, the controller further includes:

    a first calculating module, configured to calculate a network topology according to the LLDP protocol;

    a first receiving module, configured to receive MAC address information, port information, and port rate information reported by the switch;

    a second receiving module, configured to receive an unmatched flow table message reported by the switch;

    a parsing module, configured to parse the received packet of the unmatched flow table, and obtain a packet MAC address and a seven-layer application signature;

    a second calculating module, configured to calculate a forwarding path according to the network topology, the packet MAC address, and the port information;

    a third calculating module, configured to calculate a port forwarding rate according to the rate information, the seven-layer application signature, and the flow control policy table;

    The sending module is configured to deliver the flow table according to the forwarding path and the outbound port forwarding rate.
13. The controller according to claim 12, wherein the third calculating module calculates the port forwarding rate according to the rate information, the seven-layer application signature, and the flow control policy table, and specifically includes:

    a first confirmation submodule, configured to confirm a flow control policy type according to a packet MAC address;

    a second confirmation submodule, configured to confirm a packet type according to the seventh layer application signature of the packet;

    a third confirmation submodule, configured to confirm a corresponding application type according to the packet type;

    Obtaining a sub-module, configured to obtain a corresponding total application security bandwidth percentage and a total application maximum bandwidth percentage according to the application type;

    a first calculation submodule, configured to calculate a total application outbound port guaranteed bandwidth rate according to the total application guaranteed bandwidth percentage and the port rate information;

    The second calculating submodule is configured to calculate a maximum bandwidth rate of the total application outgoing port according to the total application maximum bandwidth percentage and the port rate information.
14. The controller according to claim 13, wherein the first calculating sub-module calculates the total application outgoing port guaranteed bandwidth rate according to the total application guaranteed bandwidth percentage and the port rate information, and specifically includes:

    The first calculating sub-unit is configured to calculate a port-guaranteed bandwidth rate of the critical application total application according to the percentage of the critical application total application guarantee bandwidth and the port rate information;

    a second calculating sub-unit, configured to calculate, according to the total application-assured bandwidth percentage and the port rate information of the application, the suppression of the total application outbound port guaranteed bandwidth rate;

    The third calculating sub-unit is configured to calculate a port-guaranteed bandwidth rate of the general application-out port according to the percentage of the total application-assured bandwidth and the port rate information of the common application.
15. The controller according to claim 13, wherein the second calculating sub-module calculates the maximum bandwidth rate of the total application outgoing port according to the total application maximum bandwidth percentage and the port rate information, and specifically includes:

    a fourth calculating sub-unit, configured to calculate a maximum bandwidth rate of the total application outbound port of the critical application according to the maximum application percentage of the critical application and the port rate information;

    a fifth calculating sub-unit, configured to calculate a maximum bandwidth rate of the total application outgoing port of the proposed application according to the maximum application bandwidth percentage and port rate information of the application application;

    The sixth calculating sub-unit is configured to calculate a maximum bandwidth rate of the general application outbound port of the common application according to the total application bandwidth maximum percentage and the port rate information of the common application.

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