CN112929264B - Service flow transmission method, system and network equipment - Google Patents

Abstract

The embodiment of the invention provides a service flow transmission method, a service flow transmission system and network equipment, and belongs to the technical field of communication. The method comprises the following steps: the virtual router receives a target request message forwarded by the virtual switch and matches the target request message with a preset service quality rule set; the virtual router sends the target request message to a virtual load balancer according to the matching result; the virtual load balancer selects a service server for the target request message according to a pre-configured load balancing rule; and the virtual load balancer sends the target request message to the virtual switch, so that the virtual switch forwards the target request message to the selected service server for service processing. By adopting the invention, the data processing performance of the whole business service system can be improved.

Description

Service traffic transmission method, system and network equipment

technical field

The present invention relates to the field of communication technologies, and in particular to a service flow transmission method, system and network equipment.

Background technique

In order to improve the business server's ability to process request messages and avoid the problem of business service interruption caused by a single point of failure of the business server, multiple business servers (Real Server, RS) can be interconnected through the network to form a business server cluster to jointly provide services Serve. At this point, load balancing nodes need to be deployed between the client and the RS cluster. The load balancing node and the business server cluster form a business service system to provide business services externally. Specifically, the load balancing node is used for receiving request messages sent by various clients, and distributing these request messages to multiple service servers in the service server cluster for service processing. Among them, DPVS (DPDK-LVS) technology based on DPDK (Data Plane Development Kit, data plane development kit) can be used to build high-performance load balancing nodes.

However, the DPVS provided by the prior art cannot perform QoS control on traffic. With the continuous growth of business traffic, the traffic control functions provided by DPVS (such as traffic shaping (Traffic Shaping)) can no longer meet the continuously improving network service quality requirements. As shown in Figure 1, in order to ensure the quality of service, virtual switches and virtual routers can be deployed on load balancing nodes to control and manage service traffic.

The inventor of this patent application, by studying the processing process of business traffic, found that the existing technology has at least the following problems: as shown in Figure 2, not only the data exchange between the load balancing node and the client or business server needs to be performed through a virtual switch, Moreover, the virtual router on the load balancing node and the virtual load balancer also need to exchange data through the virtual switch. When processing large-scale business traffic, the load of the virtual switch is heavy, resulting in low efficiency of business traffic transmission inside the load balancing node, which in turn makes the data processing performance of the entire business service system low.

SUMMARY OF THE INVENTION

The purpose of the present application is to provide a service flow transmission method, system, network device and computer-readable storage medium, so as to solve some or all of the problems existing in the prior art. The technical solution is as follows:

In a first aspect, a service flow transmission method is provided, and the service flow transmission method includes:

The virtual router receives the target request packet forwarded by the virtual switch, and matches the target request packet with a pre-configured QoS rule set;

The virtual router sends the target request packet to the virtual load balancer according to the matching result, so that the virtual load balancer performs load balancing processing on the target request packet.

In this embodiment, the virtual router sends the received request message to the virtual load balancer. Compared with the prior art, the request message is not forwarded by the virtual switch, which reduces the forwarding of the request message inside the load balancing node. On the one hand, the load on the virtual switch is reduced, and on the other hand, the transmission efficiency of the request message is improved. It can be understood that, under the same hardware configuration, the present invention can process more and faster request messages and speed up service response compared with the prior art. Moreover, the virtual router controls the quality of service of the received request message based on the set of quality of service rules, which improves the quality of service function of the load balancing node for uplink traffic. It can be seen that the present invention improves the data processing performance of the entire business service system.

Optionally, before the virtual router sends the target request packet to the virtual load balancer, the service traffic transmission method further includes:

The virtual router establishes a communication connection with the vhost_user port of the virtual load balancer through the virtio_user port.

In this embodiment, the virtio_user port and the vhost_user port send and receive packets based on the shared memory, which can improve the efficiency of data transfer between the virtual router and the virtual load balancer.

Further, the virtual router sends the target request packet to the virtual load balancer according to the matching result, specifically including:

If there is no quality of service rule matching the target request packet in the preconfigured set of quality of service rules, the virtual router sends the target request packet to the virtual load balancer;

Otherwise, the virtual router executes the operation method specified in the matched QoS rule on the target request message, and sends the target request message to the virtual load balancer if necessary.

Optionally, the service flow transmission method further includes:

The virtual router receives the target response message forwarded by the virtual load balancer, and matches the target response message with the quality of service rule set;

The virtual router sends the target response packet to the virtual switch according to the matching result, so that the virtual switch sends the target response packet to the client.

In this embodiment, the virtual router receives the response message sent by the virtual load balancer. Compared with the prior art, the response message is not forwarded by the virtual switch, which reduces the number of times the response message is forwarded inside the load balancing node. On the one hand, the load of the virtual switch is reduced, and on the other hand, the transmission efficiency of the response message is improved. It can be understood that, under the same hardware configuration, compared with the prior art, the present invention can process more and faster response messages and speed up service response. Moreover, the virtual router controls the quality of service of the received response message based on the set of quality of service rules, which improves the quality of service function of the load balancing node for downlink traffic. It can be seen that the present invention can improve the data processing performance of the entire business service system.

In a second aspect, a service flow transmission method is provided, and the service flow transmission method includes:

The virtual load balancer receives the target request message forwarded by the virtual router, and selects a service server for the target request message according to a pre-configured load balancing rule;

The virtual load balancer sends the target request message to the virtual switch, so that the virtual switch forwards the target request message to the selected service server for service processing.

In this embodiment, the virtual load balancer receives the request message sent by the virtual router. Compared with the prior art, the request message is not forwarded by the virtual switch, which reduces the number of times the request message is forwarded inside the load balancing node. On the one hand, the load of the virtual switch is reduced, and on the other hand, the transmission efficiency of the request message is improved. It can be understood that, under the same hardware configuration, the present invention can process more and faster request messages compared with the prior art, and improves the data processing performance of the entire business service system.

Optionally, before the virtual load balancer receives the target request packet forwarded by the virtual router, the service traffic transmission method further includes:

The virtual load balancer establishes a communication connection with the virtio_user port of the virtual router through the vhost_user port.

In this embodiment, the vhost_user port and the virtio_user port send and receive packets based on the shared memory, which can improve the efficiency of data transfer between the virtual router and the virtual load balancer.

Optionally, the service flow transmission method further includes:

The virtual load balancer receives the target response message forwarded by the virtual switch, and sends the target response message to the virtual router, so that the virtual router processes the target response message according to the quality of service rule set arts.

In this embodiment, after the virtual load balancer performs relevant processing on the received response message, it sends the response message to the virtual router for control and management. Compared with the prior art, the response message is not forwarded by the virtual switch. The number of forwarding times of the response message inside the load balancing node is reduced, on the one hand, the load of the virtual switch is reduced, and on the other hand, the transmission efficiency of the response message is improved. It can be understood that, under the same hardware configuration, compared with the prior art, the present invention can process more and faster response messages and speed up service response. At the same time, the virtual load balancer itself does not have a quality of service function. After the virtual router is deployed on the load balancing node, the virtual router controls the quality of service of the received response message based on the set of quality of service rules, which improves the load balancing node's control of downlink traffic. Quality of service function. It can be seen that the present invention can improve the data processing performance of the entire business service system.

In the third aspect, a service traffic transmission system is provided, including a virtual switch, a virtual router and a virtual load balancer,

The virtual router is configured to receive the target request message forwarded by the virtual switch, and match the target request message with a pre-configured quality of service rule set;

The virtual router is further configured to send the target request packet to the virtual load balancer according to the matching result;

The virtual load balancer is configured to select a service server for the target request message according to a pre-configured load balancing rule;

The virtual load balancer is further configured to send the target request message to the virtual switch, so that the virtual switch forwards the target request message to the selected service server for service processing.

Optionally, the virtual router is also used for:

Establish a communication connection with the vhost_user port of the virtual load balancer through the virtio_user port.

Further, the virtual router is specifically used for:

If there is no quality of service rule matching the target request packet in the preconfigured set of quality of service rules, sending the target request packet to the virtual load balancer;

Otherwise, execute the operation method specified by the matched QoS rule on the target request message, and send the target request message to the virtual load balancer if necessary.

Optionally, the virtual load balancer is also used for:

receiving the target response message forwarded by the virtual switch, and sending the target response message to the virtual router, so that the virtual router processes the target response message according to the set of quality of service rules.

Optionally, the virtual router is also used for:

receiving a target response message forwarded by the virtual load balancer, and matching the target response message with the set of quality of service rules;

Sending the target response message to the virtual switch according to the matching result, so that the virtual switch sends the target response message to the client.

In a fourth aspect, a network device is provided. The network device includes a processor and a memory, and the memory stores at least one instruction, at least one program, a code set or an instruction set, and the at least one instruction, the at least A section of program, the code set or instruction set is loaded and executed by the processor, so as to realize the processing of the virtual routing device in the method as described in the first aspect, or realize the virtual load balancing in the method as described in the second aspect Disposal of equipment.

In a fifth aspect, a computer-readable storage medium is provided, wherein at least one instruction, at least one program, code set or instruction set is stored in the storage medium, and the at least one instruction, the at least one program, the code The set or instruction set is loaded and executed by the processor, so as to realize the processing of the virtual routing device in the method described in the first aspect, or realize the processing of the virtual load balancing device in the method described in the second aspect.

In summary, the beneficial effects brought by the technical solutions provided by the embodiments of the present invention are:

The business traffic between the virtual router and the virtual load balancer does not need to rely on the virtual switch to forward, and the virtual router and the virtual load balancer can directly exchange data. The invention reduces the forwarding times of service data inside the load balancing node, further reduces the load of the virtual switch and improves the transmission efficiency of service data. At the same time, the virtual load balancer DPVS itself does not have a quality of service function. After the virtual router is deployed on the load balancing node, the virtual router controls the service quality of the received business data based on the quality of service rule set, which improves the quality of service function of the load balancing node. . It can be seen that the present invention can improve the data processing performance of the entire business service system.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

FIG. 1 is a schematic structural diagram of a load balancing node provided by the prior art;

FIG. 2 is a sequence diagram of processing service traffic provided by the prior art;

FIG. 3 is a schematic structural diagram of a load balancing node provided by an embodiment of the present invention;

FIG. 4 is a sequence diagram of processing service traffic provided by an embodiment of the present invention;

FIG. 5 is a flow chart of a request message transmission method provided by an embodiment of the present invention;

FIG. 6 is a flow chart of a response message transmission method provided by an embodiment of the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

The invention provides a service flow transmission method. The service flow includes a request message initiated by a client (Client) and a response message replied by a service server (RS). Wherein, the client is relative to the business service system, and the client may be any network device that initiates a request message, such as a user's terminal device or a proxy server. The service traffic transmission method may be applied to a service traffic transmission system, and the service traffic transmission system may specifically be a load balancing node as shown in FIG. 3 . Load balancing nodes can be built by deploying virtual switches, virtual routers, and virtual load balancers in a single physical server or in a distributed computing environment, and then distribute and process request packets to achieve load balancing among multiple business servers. Since the virtual switch can be connected to the virtual router and the virtual load balancer, and can also be connected to a communicable network through the physical network card, the load balancing node can be connected to the Internet through the virtual switch to perform data interaction with the client and the business server, and can The business traffic is passed between the virtual router on the load balancing node and the virtual load balancer through the virtual switch. The present invention will be described in detail by taking the virtual switch as OVS (OpenVSwitch), the virtual router as Vroute (Virtual Router), and the virtual load balancer as DPVS as examples. Wherein, the virtual switch may also be a VMware vSphere virtual switch, etc., which is not limited in the present invention.

Referring to FIG. 4 , the service flow between the virtual router and the virtual load balancer provided by the present invention does not need to be forwarded through the virtual switch. In this way, the service traffic passing through the virtual switch can be reduced, and the data processing performance of the system can be improved. In the implementation, the Vroute and the DPVS can be transformed, so that the Vroute and the DPVS can be directly connected, and then data exchange can be performed. For example, DPVS can establish a communication connection with OVS by creating a virtio_user port at startup, and establish a communication connection with Vroute by creating a vhost_user port. Vroute can establish communication connections with OVS and DPVS by creating two virtio_user ports at startup. The virtual switch OVS can establish communication connections with DPVS and Vroute by creating two vhost_user ports at startup. Wherein, the party that creates the vhost_user port can designate an FD (File Descriptor, file descriptor) file for each vhost_user port it creates, and the party that creates the virtio_user port can use the FD file corresponding to the vhost_user port. In this way, the corresponding relationship between the virtio_user port and the vhost_user port can be established according to the FD file, so that OVS and Vroute, Vroute and DPVS, and DPVS and OVS can exchange data through the corresponding virtio_user port and vhost_user port. In addition, the virtio_user port and the vhost_user port perform data interaction based on shared memory, which can improve the efficiency of data transfer.

For example, the process of establishing a communication connection between Vroute and DPVS is roughly as follows: DPVS generates an FD file when creating a vhost_user port, and specifies a port name for the vhost_user port. The port name of the vhost_user port can be vhost_user2, and generates FD file corresponding to vhost_user2. Vroute specifies the port name vhost_user2 when initiating a connection to DPVS, and uses the FD file corresponding to vhost_user2 to create a virtio_user port. The port name of the virtio_user port can be virtio_user2. In this way, virtio_user2 and vhost_user2 can be associated through the FD file, and a communication connection can be established between Vroute and DPVS through virtio_user2 and vhost_user2 to perform data interaction. In addition, as shown in Figure 3, virtio_user1 is associated with vhost_user1, and virtio_user3 is associated with vhost_user3. The process of establishing a communication connection between Vroute and OVS, and the process of establishing a communication connection between DPVS and OVS are similar, and the present invention will not repeat them here.

The processing flow shown in FIG. 5 will be described in detail below in conjunction with the specific implementation manner, and the content may be as follows:

Step 501, the virtual router receives the target request packet forwarded by the virtual switch, and matches the target request packet with a pre-configured QoS rule set.

In implementation, OVS can be connected to the Internet through a physical network card, and then receive request messages from each client from the Internet. For ease of description, any request packet may be referred to as a target request packet. After OVS obtains the target request message, it can forward the target request message to Vroute according to the pre-configured flow table. The Vroute is pre-configured with a set of service quality rules for controlling and managing service traffic. After receiving the target request packet, Vroute matches the target request packet with each QoS rule in the QoS rule set, and then processes the target request packet accordingly according to the matching result. It can be understood that if the target request packet satisfies the packet matching condition of a certain quality of service rule, the target request packet matches the quality of service rule; if the target request packet does not meet the packet matching condition of a certain quality of service rule , the target request packet does not match the QoS rule.

Optionally, the set of quality of service rules set on the Vroute may include ACL (Access Control List, access control list), QoS (Quality of Service, quality of service) policies, and the like. Generally speaking, the packet matching conditions of the ACL and the QoS policy can be set according to one or more types of information in the 5-tuple information of the packet. The five-tuple information includes source IP address, source port number, destination IP address, destination port number and transport layer protocol type. Of course, in addition to the quintuple information, the message matching condition may also include other information, such as service type, which is not limited in the present invention.

Furthermore, one ACL may include multiple ACL rules, and different ACL rules may be set with different packet matching conditions. For example, the packet matching condition of a rule in an ACL can be the combination of source IP address and destination port number, while the packet matching condition of another rule can be the source IP address, source port number, destination IP address, and destination port number The combination. Vroute performs corresponding operations on the target request packets based on the matched ACL rules. Similarly, a QoS policy can include multiple QoS rules, and different QoS rules can also be set with different packet matching conditions. Vroute performs corresponding operations on the target request packets based on the matched QoS rules. For example, the matched QoS rule may be to add a DSCP (Differentiated Services Code Point, Differentiated Services Code Point) value to the target request message, so that subsequent processing can determine the priority of the target request message according to the DSCP value.

Step 502, the virtual router sends the target request packet to the virtual load balancer according to the matching result.

During implementation, Vroute will match the received target request message with each QoS rule in the pre-configured QoS rule set. The matching result may include that there is a QoS rule matching the target request packet in the QoS rule set, and there is no QoS rule matching the target request packet in the QoS rule set.

It is worth mentioning that since the packet matching conditions of each QoS rule in the QoS rule set may be the same or different, there may be duplication or contradiction between these QoS rules. Therefore, when matching the target request message with each QoS rule in the QoS rule set, the priority of each QoS rule can be determined according to a certain matching sequence. Once a certain QoS rule is matched, it can be Do not continue to match.

Further, the specific processing flow of step 502 may be as follows: if there is no QoS rule matching the target request packet in the pre-configured QoS rule set, the virtual router sends the target request packet to the virtual load balancer ; Otherwise, the virtual router executes the operation method specified by the matched QoS rule on the target request message, and sends the target request message to the virtual load balancer if necessary.

In implementation, if Vroute matches any one or more quality of service rules for the target request message, Vroute then performs the operation method specified by the matched quality of service rule for the target request message, and if necessary, reports the target request The file is sent to DPVS for subsequent processing. Conversely, if all the QoS rules in the QoS rule set do not match the target request message, Vroute does not need to control and manage the target request message, and directly sends the target request message to the DPVS for subsequent processing.

It is worth mentioning that the operation method stipulated by the quality of service rule may include forwarding, discarding, forwarding after changing the priority of the message, and so on. Wherein, if the operation method specified by the matched QoS rule is discard, it can be considered that Vroute does not need to send the target request packet to the DPVS for subsequent processing, and Vroute will actively discard the target request packet.

Step 503, the virtual load balancer selects a service server for the target request message according to the pre-configured load balancing rules.

In the implementation, in order to enable the load balancing node to evenly distribute the business traffic to multiple business servers at the back end, thereby providing large-scale business services, it is necessary to configure load balancing rules on the DPVS. After receiving the target request message sent by Vroute, DPVS selects a service server (which can be called a target service server) from multiple service servers at the back end for the target request message according to the pre-configured load balancing rules, and the target service server can be Independently respond to the target request message. Wherein, the load balancing rule may be any one of round-robin (Round-Robin), weighted round-robin (WeightedRound-Robin), least connection (Least-Connection) and other rules, which is not limited in the present invention.

Certainly, in an embodiment, after receiving the target request message, the DPVS may further control and manage the target request message according to the flow control strategy supported by the DPVS itself.

Step 504, the virtual load balancer sends the target request message to the virtual switch, so that the virtual switch forwards the target request message to the selected service server for service processing.

In the implementation, the load balancing node needs to be connected to the Internet through OVS, and then perform data interaction with the target business server based on the Internet. Therefore, after the DPVS selects the target service server for the target request message, it can send the target request message to the OVS. Afterwards, the load balancing node sends the target request message to the target service server through the OVS for business processing.

In an embodiment, after the target service server performs service processing on the target request message, it may directly send a response message corresponding to the target request message (which may be called a target response message) to the client. For example, when DPVS adopts DR (Direct Routing, direct routing) mode, after the target request message is processed by the load balancing node, the source IP address does not change, and the target service server can obtain the IP address of the client that initiated the target request message . Therefore, the target service server can bypass the load balancing node and directly send the target response message to the client. In this case, the method for processing service traffic provided by the present invention is only for request packets (which may be referred to as uplink traffic).

In another embodiment, after the target service server processes the target request message, it may send the target response message to the load balancing node, and the load balancing node processes the target response message and sends it to the client. For example, when DPVS adopts NAT (Network Address Translation, Network Address Translation) mode, DPVS will perform IP address translation on the target request message, and the source IP address of the target request message received by the target service server is not the originating target request message The IP address of the client. Therefore, the target service server needs to send the target response message to the load balancing node for processing, and the load balancing node forwards the target response message to the client. Referring to FIG. 6 , in this case, the method for processing service traffic provided by the present invention may also include related processing for response packets (which may be referred to as downlink traffic).

It should be noted that the DPVS may also adopt other forwarding modes supported by it, such as TUN (IP Tunneling, IP tunneling) mode, FULL NAT mode, etc., which are not limited in the present invention.

Step 601, the virtual load balancer receives the target response message forwarded by the virtual switch, and sends the target response message to the virtual router.

Before step 601, the load balancing node receives the target response message sent by the service server through the OVS. After OVS receives the target response message sent by the business server, it will forward the target request message to DPVS. After that, DPVS forwards the received target response message to Vroute.

Step 602, the virtual router matches the received target response message with the pre-configured QoS rule set.

In the implementation, after Vroute receives the target response message forwarded by DPVS, it can match the target response message with each quality of service rule in the service quality rule set, and then perform corresponding actions on the target response message according to the matching result. deal with. The matching process of the target response message is similar to the matching process of the target request message, and the present invention will not repeat them here.

Step 603, the virtual router sends the target response message to the virtual switch according to the matching result, so that the virtual switch sends the target response message to the client.

In the implementation, if there is no quality of service rule matching the target response message in the pre-configured quality of service rule set, Vroute sends the target response message to OVS; otherwise, Vroute executes the matched The operation method specified by the quality of service rule, if necessary, sends the target response message to OVS. OVS can be connected to the Internet through a physical network card, so Vroute needs to return the target response message to the client through OVS.

It is worth mentioning that the operation method stipulated by the quality of service rule may include forwarding, discarding, forwarding after changing the priority of the message, and so on. Wherein, if the operation method specified by the quality of service rule that Vroute matches for the target response message is discarding, it can be considered that Vroute does not need to send the target response message to OVS for subsequent processing, and Vroute will actively discard the target response message.

With the present invention, the business flow between the virtual router and the virtual load balancer does not need to rely on the virtual switch to forward, and the virtual router and the virtual load balancer can directly perform data interaction, which reduces the number of forwarding times of business data inside the load balancing node, thereby reducing The load of the virtual switch is reduced and the transmission efficiency of service data is improved. At the same time, the virtual load balancer DPVS itself does not have a quality of service function. After the virtual router is deployed on the load balancing node, the virtual router controls the service quality of the received business data based on the quality of service rule set, which improves the quality of service function of the load balancing node. . It can be seen that the present invention can improve the data processing performance of the entire business service system.

Based on the same technical concept, the embodiment of the present invention also provides a service traffic transmission system, including a virtual switch, a virtual router and a virtual load balancer,

The virtual router is configured to receive the target request message forwarded by the virtual switch, and match the target request message with a pre-configured quality of service rule set;

The virtual router is further configured to send the target request packet to the virtual load balancer according to the matching result;

The virtual load balancer is configured to select a service server for the target request message according to a pre-configured load balancing rule;

The virtual load balancer is further configured to send the target request message to the virtual switch, so that the virtual switch forwards the target request message to the selected service server for service processing.

Optionally, the virtual router is also used for:

Establish a communication connection with the vhost_user port of the virtual load balancer through the virtio_user port.

Further, the virtual router is specifically used for:

If there is no quality of service rule matching the target request packet in the preconfigured set of quality of service rules, sending the target request packet to the virtual load balancer;

Otherwise, execute the operation method specified by the matched QoS rule on the target request message, and send the target request message to the virtual load balancer if necessary.

Optionally, the virtual load balancer is also used for:

receiving the target response message forwarded by the virtual switch, and sending the target response message to the virtual router, so that the virtual router processes the target response message according to the set of quality of service rules.

Optionally, the virtual router is also used for:

receiving a target response message forwarded by the virtual load balancer, and matching the target response message with the set of quality of service rules;

Sending the target response message to the virtual switch according to the matching result, so that the virtual switch sends the target response message to the client.

The service traffic transmission system of this embodiment can be used to implement the method of the above method embodiment, and its implementation principle and technical effect to be achieved have been discussed above, and will not be repeated here.

Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general-purpose hardware platform, and of course can also be implemented by hardware. Based on this understanding, the essence of the above technical solution or the part that contributes to the existing technology can be embodied in the form of software products, and the software products for transmitting business traffic can be stored in computer-readable storage media, such as ROM/ RAM, magnetic disk, optical disk, etc., include several instructions to make a computer device execute the methods described in various embodiments or some parts of the embodiments.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims (14)

1. A service traffic transmission method is characterized in that the service traffic transmission method comprises the following steps:

the virtual router receives a target request message forwarded by the virtual switch, and matches the target request message with a preset service quality rule set;

and the virtual router sends the target request message to a virtual load balancer according to the matching result so that the virtual load balancer performs load balancing processing on the target request message.

2. The traffic flow transmission method according to claim 1, wherein before the virtual router sends the target request packet to the virtual load balancer, the traffic flow transmission method further comprises:

and the virtual router establishes communication connection with the vhost _ user port of the virtual load balancer through the virtio _ user port.

3. The method for transmitting service traffic according to claim 1, wherein the virtual router sends the target request packet to the virtual load balancer according to the matching result, specifically comprising:

if the service quality rule matched with the target request message does not exist in the preset service quality rule set, the virtual router sends the target request message to the virtual load balancer;

otherwise, the virtual router executes the operation method specified by the matched service quality rule to the target request message, and if necessary, the target request message is sent to the virtual load balancer.

4. The method of claim 1, wherein the traffic flow transmission method further comprises:

the virtual router receives a target response message forwarded by the virtual load balancer, and matches the target response message with the service quality rule set;

and the virtual router sends the target response message to the virtual switch according to the matching result so that the virtual switch sends the target response message to a client.

5. A service traffic transmission method is characterized in that the service traffic transmission method comprises the following steps:

the virtual load balancer receives a target request message forwarded by the virtual router, and selects a service server for the target request message according to a pre-configured load balancing rule; after the target request message is matched with a service quality rule set pre-configured by the virtual router through the virtual router, the target request message is sent to the virtual load balancer by the virtual router according to a matching result;

and the virtual load balancer sends the target request message to a virtual switch, so that the virtual switch forwards the target request message to the selected service server for service processing.

6. The traffic flow transmission method according to claim 5, wherein before the virtual load balancer receives the target request packet forwarded by the virtual router, the traffic flow transmission method further comprises:

and the virtual load balancer establishes communication connection with the virtual _ user port of the virtual router through the vhost _ user port.

7. The method of claim 5, wherein the traffic flow transmission method further comprises:

and the virtual load balancer receives a target response message forwarded by a virtual switch and sends the target response message to the virtual router, so that the virtual router processes the target response message according to the service quality rule set.

8. A service traffic transmission system comprising a virtual switch, a virtual router and a virtual load balancer, wherein,

the virtual router is used for receiving a target request message forwarded by the virtual switch and matching the target request message with a preset service quality rule set;

the virtual router is further used for sending the target request message to the virtual load balancer according to a matching result;

the virtual load balancer is used for selecting a service server for the target request message according to a preset load balancing rule;

the virtual load balancer is further configured to send the target request packet to the virtual switch, so that the virtual switch forwards the target request packet to the selected service server for service processing.

9. The traffic flow delivery system of claim 8, wherein the virtual router is further configured to:

and establishing communication connection with the vhost _ user port of the virtual load balancer through the virtio _ user port.

10. The traffic flow transmission system according to claim 8, wherein the virtual router is specifically configured to:

if the service quality rule matched with the target request message does not exist in the preset service quality rule set, the target request message is sent to the virtual load balancer;

otherwise, executing the operation method specified by the matched service quality rule on the target request message, and if necessary, sending the target request message to the virtual load balancer.

11. The traffic flow delivery system of claim 8, wherein the virtual load balancer is further configured to:

and receiving a target response message forwarded by the virtual switch, and sending the target response message to the virtual router so that the virtual router processes the target response message according to the service quality rule set.

12. The traffic flow delivery system of claim 8, wherein the virtual router is further configured to:

receiving a target response message forwarded by the virtual load balancer, and matching the target response message with the service quality rule set;

and sending the target response message to the virtual switch according to the matching result so that the virtual switch sends the target response message to a client.

13. A network device comprising a processor and a memory, the memory having stored therein at least one instruction, at least one program, set of codes, or set of instructions, the at least one instruction, the at least one program, set of codes, or set of instructions being loaded and executed by the processor to implement processing by a virtual router in a method according to any of claims 1 to 4, or to implement processing by a virtual load balancer in a method according to any of claims 5 to 7.

14. A computer readable storage medium having stored therein at least one instruction, at least one program, a set of codes, or a set of instructions, which is loaded and executed by a processor to implement a process of a virtual router in a method according to any one of claims 1 to 4, or to implement a process of a virtual load balancer in a method according to any one of claims 5 to 7.

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