TW201830930A - Balance chain topology network processing system with network traffic load balancing and method thereof for considering a ring redundancy processing method formed by a chain topology network and balancing a network bearing capacity - Google Patents

Abstract

The invention mainly provides a processing system including a balance chain network topology with network traffic load balancing and a redundancy capability. The processing system comprises a main terminal connected to a central gateway end through a first link formed by a plurality of switching nodes; and a secondary terminal connected to the central gateway end through a second link formed by a plurality of switching nodes, wherein the central gateway end transmits a first loop detection signal to the main terminal by means of the first link at a periodic interval, and transmits a second loop detection signal to the secondary terminal by means of the second link. The main terminal transmits a first loop confirmation signal to the central gateway end after receiving the first loop detection signal. The secondary terminal transmits a second loop confirmation signal to the central gateway end after receiving the second loop detection signal. The invention provides a technology for considering a ring redundancy processing method formed by a chain topology network and balancing a network bearing capacity.

Description

 Balanced chain network processing system with network traffic load balancing and method thereof  

The invention relates to a network processing system and a processing method, in particular to a network processing system and a processing method capable of both network traffic load balancing and network backup capability.

In most workplaces and server rooms, multiple computer devices are installed, and multiple computer devices are connected by network. The network coverage can be divided into local area networks (LANs). There are three types: Metropolitan Area Network (MAN) and Wide Area Network (WAN). The regional network is the smallest network, usually in the same office, the same building, or the same campus. Ethernet is one of the most common regional network architectures. In addition, the application of Ethernet is also used in various industrial environments, including transportation (iron rail and road), monitoring, energy (hydropower plants, thermal power plants, wind power plants, etc.) Distribution and transmission plants) and factory automation.

Network backup technology is an indispensable technology in Ethernet, and the error automatic reply time will have different performance standards because of the different application fields used by Ethernet. The backup network technologies used by Ethernet are Spanning Tree Protocol (STP), Rapid Spanning Tree Protocol (RSTP), and Multi Spanning Tree Protocol. , MSTP). However, the spanning tree communication protocol has its inherent limitations, and the error auto-reply can take up to 10 seconds. However, the 10 seconds of network error automatic reply time does not meet the needs of most industrial Ethernet environments. In general, the automatic network response time required by Industrial Ethernet is 50 to 200 milliseconds or even lower. In response to this type of demand, various Ethernet switch manufacturers have also introduced various types of network redundancy technologies to meet such needs. The most common network topology is the widening and combination of ring and chain networks.

Ring network is one of the network topology. Each node of the network is connected in series to form a closed loop. Each node can communicate with any other node. At present, the ring network architecture is mostly applied in a regional network or an industrial automation system, and a switch is set at each network node, and is connected to related devices via each switch to provide a network information exchange function. However, the distribution of all the devices in the system through a single ring network connection is likely to cause the reliability and stability of the entire ring network to be reduced, and the transmission quality and efficiency will be affected. In addition, it is generally in the ring network. The backup line will also be used. If any network connection on the ring line is damaged or faulty, the backup line can also be used to keep the network running without being interrupted. However, using a backup line can only avoid line failures. If the node fails, the network will still be paralyzed. Moreover, the dual-ring network architecture has a high cost of erection and is generally adopted in a fiber-optic network architecture. In the combination of various ring networks and chain networks, the design of the chain network generally designates the head or the end of the node as a blocking port, which causes the communication of the network to be only in normal times. In one of the directions, the network can be used in a range like a water pipe with only a single channel, and applications for big data image monitoring may be limited.

For the above reasons, if a new type of backup and network communication method can be provided to make the nodes in the ring network have errors, the network can still operate, and at the same time, it has error detection and detects an error. Nodes, and can split the chain network topology into two, and can set the blocking point according to the load of the load, which can solve the problem and make the network bandwidth up to 2 times the usable range.

In view of the above-mentioned shortcomings of the prior art, the present invention mainly provides a balanced chain network processing system with network traffic load balancing, comprising: a main terminal connected to the central through a first link formed by a plurality of switch nodes And a primary terminal connected to the central gateway through a second link formed by the plurality of switch nodes; wherein the central gateway transmits a first cyclic detection signal to the primary through the first link at intervals And transmitting, by the second link, a second loop detection signal to the secondary terminal; wherein, after the primary terminal receives the first loop detection signal, the primary terminal transmits a first loop confirmation signal to the central gateway end, and After the secondary terminal receives the second loop detection signal, the secondary terminal transmits a second loop confirmation signal to the central gateway end to confirm that the central gateway end, the plurality of switch nodes in the first link, and the second link Whether the path formed by the plurality of switch nodes, the primary terminal and the secondary terminal is normal; wherein the central gateway is based on the first link and the second link Web loading position and adjusted to achieve load balancing effect.

The balanced chain network processing system with network traffic load balancing according to the present invention further includes a chain network or a ring network, and the chain network or ring network is connected to the primary terminal and the secondary terminal. Wherein, when the balanced chain network processing system detects an error in one of the central gateway end, the plurality of switch nodes, the primary terminal or the secondary terminal, the error message transmits a signal error message to the central gateway end, If the error occurs on the first link, the error occurs to transmit another signal error message to the primary terminal. If the error occurs on the second link, the error occurs to transmit another signal error message to the secondary terminal.

Preferably, when the central gateway receives the signal error message, the state of a central blocking port at the central gateway is set to be turned on, and the Layer 2 address forwarding table of the learned device currently connected to the central blocking port is cleared. When the plurality of switch nodes, the primary terminal or the secondary terminal receives the signal error message or another signal error message, the layer 2 of the device currently learned by the port currently connected to the plurality of switch nodes, the primary terminal or the secondary terminal is cleared. Address forwarding table.

Preferably, the primary terminal includes a first terminal port and a primary member port, and the secondary terminal includes a second terminal port and a secondary member port, and the primary terminal receives the first loop detection signal by using the primary member port. The secondary terminal receives the second loop detection signal by the secondary member port until the first loop detection signal is transmitted to the first terminal port and the second loop detection signal is transmitted to the second terminal port.

Preferably, when the detection result shows that the first link, the second link, the primary terminal, and the secondary terminal have no error, a central blocking port at the central gateway end is converted into a blocking state to avoid being allowed by the central gateway end. The first link and the second link form a loop.

Preferably, after the central blocking port of the central gateway end is switched into a blocking state, the central gateway further transmits a plurality of recovery signals to the plurality of switching nodes, and the plurality of switching nodes continue to forward the plurality of restoration messages until the primary terminal or the secondary terminal, when the primary terminal When the secondary terminal and the plurality of switch nodes receive the complex recovery message, the member ports of the first terminal port, the primary member port, the second terminal port, the secondary member port, and the plurality of switch nodes are set to be in the on state and cleared. Layer address forwarding table.

Preferably, the period of time is any one of 10 milliseconds to 100 milliseconds, which is selected according to the requirements of the actual application field.

The present invention also provides a method for processing a balanced chain network with network traffic load balancing, comprising the steps of: estimating the frequency requirement required to establish a balanced chain network in a network having a plurality of switch nodes, And finding the position of the balance node in the plurality of switch nodes according to the frequency demand, and setting the balance node as a central gateway end; forming a first link, the first link by the plurality of switch nodes and a main terminal An end point connected to the central gateway end, and a second link formed by the plurality of switch nodes and one secondary terminal, the second link being connected to the other end of the central gateway end; the central gateway end is separated by a period of time One link transmits a first loop detection signal to the primary terminal, and transmits a second loop detection signal to the secondary terminal through the second link; when the primary terminal receives the first loop detection signal, the primary terminal transmits a first loop confirmation signal to the central gateway end, and when the secondary terminal receives the second loop detection signal, the secondary terminal transmits a second loop confirmation signal to the middle End mark, the central mark to identify the end of the path of the first plurality of switch node links, a plurality of switch nodes the second link, primary and secondary terminals in which the terminal is normal and correct.

The method for processing a balanced chain network with network traffic load balancing according to the present invention further includes the following steps: when the detection result shows that the central gateway end, the first link, the second link, the primary terminal, and the secondary terminal have no error Afterwards, a central blocking port at the central gateway end is converted into a blocking state to avoid forming a loop between the first link and the second link through the central gateway end; the central gateway further transmits a plurality of recovery signals to the plurality of switching nodes, the plurality The switch node continues to forward the complex recovery message until the primary terminal or the secondary terminal; when the primary terminal, the secondary terminal, and the plurality of switch nodes receive the complex restoration message, the first terminal port, the primary member port, the second terminal port, and the second All member ports of the member port and the complex switch node are set to be in the on state and the layer 2 address forwarding table is cleared.

The method for processing a balanced chain network with network traffic load balancing according to the present invention further includes the following steps: when detecting an error of one of a central gateway end, a plurality of switch nodes, a primary terminal, or a secondary terminal, If an error occurs, a signal error message is sent to the central gateway; if the error occurs on the first link, the error will send another signal error message to the primary terminal. If the error occurs on the second link, the error occurs. Another signal error message will be transmitted to the secondary terminal; after receiving the signal error message, the central gateway will change the state of a central blocking port at the central gateway from blocking to conducting; the central gateway will clear the current connection to the central gateway. The device's Layer 2 address forwarding table, and the complex switch node, the primary terminal, and the secondary terminal receive the signal error message or another signal error message, and then clear the current connection to the complex switch node, the primary terminal, and the secondary terminal. The device's Layer 2 address forwarding table.

The method for processing a balanced chain network with network traffic load balancing according to the present invention further includes the following steps: one of the central gateway end, one of the plurality of switch nodes, one of the primary terminal or the secondary terminal detects an error During the repair, the restorer transmits a signal recovery message to the central gateway; after receiving the signal recovery message, the central gateway sends the first loop detection signal to the primary terminal and transmits the second loop detection signal to the secondary terminal; After the primary terminal receives the first loop detection signal, the primary terminal transmits the first loop acknowledgement signal to the central gateway end, and after the secondary terminal receives the second loop detection signal, the secondary terminal transmits the second loop acknowledgement signal to the central terminal. The gateway end confirms whether the path formed by the central gateway end, the plurality of switch nodes in the first link, the plurality of switch nodes in the second link, the primary terminal, and the secondary terminal is normal.

Preferably, the interval is between 10 milliseconds and 100 milliseconds, and is selected according to the requirements of the actual application field.

Other objects, advantages and novel features of the invention will be apparent from

1, 4‧‧‧ Balanced chain network processing system with network traffic load balancing

50, 52, 54‧‧‧ Balanced Chain Network Processing System with Network Traffic Load Balancing

5‧‧‧Multiple backup network

11‧‧‧ main terminal

13‧‧‧minor terminal

15‧‧‧Central Gateway

17‧‧‧Switch node

20‧‧‧Ring network

31‧‧‧First link

33‧‧‧second link

40‧‧‧Circular network, network topology

80‧‧‧Error

51‧‧‧ third link

53‧‧‧fourth link

61‧‧‧First overall link

63‧‧‧second overall link

71‧‧‧Link

111‧‧‧First terminal port

113‧‧‧Main member ports

131‧‧‧Second terminal port

133‧‧‧Secondary member port

151‧‧‧Central blocking port

153‧‧‧Central member port

171‧‧‧Member port

S10-S80‧‧‧Steps

S90-S130‧‧‧Steps

S140-S210‧‧‧Steps

The invention will be better understood when viewed in conjunction with the drawings. For example, the foregoing summary and the above detailed description. For the purposes of illustrating the invention, various examples are now shown in the drawings. However, it should be understood that the present invention is not limited to the arrangement and apparatus described.

1 is a schematic diagram showing a balanced chain network processing system with network traffic load balancing according to an embodiment of the present invention; FIG. 2 is a diagram showing network traffic load balancing according to an embodiment of the present invention connected by a link. Schematic diagram of a balanced chain network processing system; FIG. 3 is a schematic diagram illustrating the detection of an error in the balanced chain network processing system with network traffic load balancing in FIG. 2; FIG. 4 is a diagram illustrating still another embodiment of the present invention. Schematic diagram of a balanced chain network processing system with network traffic load balancing; FIG. 5 is a schematic structural diagram of a balanced chain network processing system with network traffic load balancing according to still another embodiment of the present invention; 6 is a flow chart illustrating a method for processing a balanced chain network with network traffic load balancing according to an embodiment of the present invention; FIG. 7 is a diagram illustrating a balanced chain network detection with network traffic load balancing according to an embodiment of the present invention; A flowchart of a processing method when an error is detected; and FIG. 8 is a flowchart illustrating a processing method after a balanced chain network repair error with network traffic load balancing according to an embodiment of the present invention.

Please refer to the examples shown in the drawings of the present invention in detail. All figures are denoted by the same component symbols as much as possible, representing the same or similar parts. Please note that the drawings are drawn in a simplified form and are not drawn to exact scale.

1 is a schematic diagram for explaining a balanced chain network processing system with network traffic load balancing according to an embodiment of the present invention; FIG. 2 is a schematic diagram for explaining an embodiment of the present invention connected by a link An example of a balanced chain network processing system with network traffic load balancing. Referring to FIG. 1 and FIG. 2, a balanced chain network processing system 1 with network traffic load balancing according to an embodiment of the present invention includes: a main terminal 11, a secondary terminal 13, a central gateway end 15, and a plurality of switch nodes 17. The main terminal 11 forms a first link 31 through a plurality of switch nodes 17 and is connected to one end of the (15) central gateway end. The secondary terminal 13 forms a second link 33 through the plurality of switch nodes 17 and is connected to the other end of the central gateway end. One end of the primary terminal 11 and one end of the secondary terminal 13 may be additionally connected to another ring network, another chain network or another balanced chain network processing system (such as the link 71 shown in FIG. 2). ).

The primary terminal 11 includes a first terminal port 111 and a primary member port 113. The secondary terminal 13 includes a second terminal port 131 and a secondary member port 133. The central gateway end includes a central blocking port 151 and a central member port 153. Each of the plurality of switch nodes 17 includes two member ports 171. In a balanced chain network processing system 1 with network traffic load balancing, the primary terminal 11 can be considered as the first switching node of the balanced chain network processing system 1 with network traffic load balancing. The secondary terminal 13 can be considered as the final switch node of the balanced chain network processing system 1 with network traffic load balancing.

The main terminal 11, the secondary terminal 13, the central gateway 15 and the plurality of switch nodes 17 are connected to each other by respective ports; in the embodiment of the present invention, the total number of the plurality of switch nodes 17 can be Adjusting according to the requirements of the network, and adjusting one of the plurality of switch nodes 17 as the central gateway end 15 according to the network load of the first link 31 and the second link 33, so that the first A link 31 and a second link 33 achieve load balancing effects. In other words, the present invention forms a balanced chain network system 1 with network traffic load balancing by means of a central gateway end 15, a first link 31 and a second link 33.

In an embodiment of the invention, the first terminal port 111 and the second terminal port 131 can be connected to each other through a link (71) to form a ring network. The central gateway 15 of the balanced chain network processing system 1 with network traffic load balancing transmits a first loop detection signal to the main terminal 11 via the first link 31 every time interval, and The second link 33 transmits a second loop detection signal to the secondary terminal 13. After the primary terminal 11 receives the first loop detection signal, the primary terminal 11 transmits a first loop confirmation signal to the central gateway terminal 15. After the secondary terminal 13 receives the second loop detection signal, the secondary terminal 13 transmits a second loop confirmation signal to the central gateway end 15 to confirm the complex switch in the first gateway 31 from the central gateway end 15. Whether the path formed by the node 17, the complex switch node 17, the primary terminal 11, and the secondary terminal 13 in the second link 33 is normal (whether it is the best normal operation path).

In addition, the primary terminal 11 receives the first loop detection signal through the primary member port 113 until the first loop detection signal is transmitted to the first terminal port 111, and the secondary terminal 13 receives the second through the secondary member port 133. The loop detection signal is looped until the second loop detection signal is transmitted to the second terminal port 131. When the detection result shows that the first link 31, the second link 33, the primary terminal 11 and the secondary terminal 13 have no error, the central blocking port 151 of the central gateway end 15 is converted into a blocking state to avoid the central gateway. Terminal 15 causes first link 31 and second link 33 to form a loop. At the same time, after the central blocking port 151 of the central gateway end 15 is switched into the blocking state, the central gateway end 15 further transmits the complex recovery signal to the plurality of switching nodes 17, and the plurality of switching nodes 17 will continue to transfer the complex recovery signals until the multiple recovery signals are transmitted. Up to the primary terminal 11 or the secondary terminal 13. When the primary terminal 11, the secondary terminal 13, and the plurality of switch nodes 17 receive the complex recovery signal, the first terminal port 111, the primary member port 113, the second terminal port 131, the secondary member port 133, and the plurality of switch nodes 17 are received. All member ports 171 are set to be in the on state and the MAC address forwarding table is cleared to enable the complex (17) switch node to resume normal operation. In the embodiment of the present invention, the interval of the central gateway end 15 is any one of 10 milliseconds to 100 milliseconds, and may be selected according to the requirements of the actual application field.

It should be understood that the above-mentioned recovery signals are only allowed to be transmitted in the balanced link and cannot be sent to the external network of the primary terminal 11 and the secondary terminal 13 (for example, the external network may be the first terminal port 111 or the first The network to which the second terminal port 131 is connected). When the primary terminal 11, the secondary terminal 13, and the plurality of switch nodes 17 receive the recovery signal, they must have their own balanced link ports (including the first terminal port 111, the primary member port 113, the second terminal port 131, and the secondary). The member port 133 and all member ports 171) are set to be in a state of being turned on and the MAC address forwarding table is cleared. The primary purpose of this action is to restore the original network path of the first link 31 and the second link 33 to restore network load balancing.

FIG. 3 is a schematic diagram showing a schematic diagram when the balanced chain network processing system with network traffic load balancing in FIG. 2 detects an error. Referring to FIG. 3, in another embodiment of the present invention, when it is detected that an error 80 occurs in the member port 171 of one of the switch nodes 17 in the second link 33 (for example, a disconnection), an error occurs (in the case of In this embodiment, the switch node 17) transmits a signal error message to the central gateway terminal 15. If the error occurs on the first link 31, another signal error message is transmitted to the primary terminal 11; if the error occurs on the second link 33, another signal error message is transmitted to the secondary terminal 13. After receiving the signal error message, the central gateway 15 changes the state of the central blocking port 151 from blocking to conducting, and clears the Layer 2 address forwarding table of the current device (the device connected to the central gateway 15). After receiving the signal error message, the plurality of switch nodes 17, the primary terminal 11, and the secondary terminal 13 clear the Layer 2 address of the current device (the device connected to the complex switch node 17, the primary terminal 11, and the secondary terminal 13). Forwarding table. The purpose of clearing the Layer 2 address translation table is to quickly switch the original transmission path to the intact link direction by re-learning the Layer 2 address forwarding table when an error occurs. Since the network transmission path is completed in advance, when a signal error or interruption occurs, the signal error message can be used to notify and clear the Layer 2 address forwarding table to reach the first link 31 or the second link. The transmission of 33 can quickly change another good link.

It should be understood that in other embodiments of the present invention, it is also possible that an error occurs in one of the central gateway end 15, one of the plurality of switch nodes 17, the primary terminal 11 or the secondary terminal 13, and the same The error occurrence (which may be one of the central gateway 15 and one of the plurality of switch nodes 17, the primary terminal 11 or the secondary terminal 13) transmits a signal error message to the central gateway terminal 15. If the error occurs on the first link 31, another signal error message is transmitted to the primary terminal 11; if the error occurs on the second link 33, another signal error message is transmitted to the secondary terminal 13.

Furthermore, when one of the central gateway end 15, one of the plurality of switch nodes 17, the primary terminal 11 or the secondary terminal 13 detects a restoration (for example, error 80 in Fig. 3 has been fixed), the recovery is found. A central recovery port 15 , one of the plurality of switch nodes 17 , one of the primary terminal 11 or the secondary terminal 13 transmits a signal recovery message to the central gateway 15 , and the central gateway 15 receives After the signal is restored, the first loop detection signal is sent to the main terminal 11, and the second loop detection signal is transmitted to the secondary terminal 13 and the above-mentioned debugging process is performed. The debugging process is the same as the above content. Not to repeat.

In addition, when the first link 31, the second link 33, the primary terminal 11, and the secondary terminal 13 include the link 71 detecting no error, the central blocking port 151 of the central gateway 15 is converted into a blocking state, It is avoided that the first link 31 and the second link 33 form a loop by the central gateway end 15. This extension uses the benefit of having a ring network for a balanced chain network processing system 1 with network traffic load balancing, regardless of any port error of the first link 31 or the second link 33. The disconnected port can be connected to the other port by the first link 31 or the second link 33. As shown in FIG. 3, after the error 80 occurs, the connections of the first link 31 and the second link 33 through the link 71 are still connected, and the disconnected port 171 can be connected to the first link 31. Another port 133.

FIG. 4 is a schematic diagram showing the structure of a balanced chain network processing system with network traffic load balancing according to still another embodiment of the present invention. Referring to FIG. 2 and FIG. 4, in another embodiment of the present invention, the balanced chain network processing system 1 with network traffic load balancing forms a ring network through the link 71 (ie, FIG. 4 The ring network 20) shown in the above, another network traffic load balancing balanced chain network processing system 4 can be connected to the ring network 20 to further form another ring network 40 (also Called the new network topology 40). In this network topology 40, when there is a line error in the balanced chain network processing system 4 and the ring network 20 with network traffic load balancing, the entire network topology 40 is not affected. The normal communication of any node, and the load balancing feature of the balanced chain network can be maintained when the entire network topology 40 non-disruptive error occurs.

FIG. 5 is a schematic diagram showing the structure of a balanced chain network processing system with network traffic load balancing according to still another embodiment of the present invention. Please refer to FIG. 2, FIG. 4 and FIG. 5. In FIG. 5, the ring network 20 is centered, and four other balanced network processing systems with network traffic load balancing are connected. Balanced chain network processing system 50 for traffic load balancing, balanced chain network processing system 52 with network traffic load balancing, and balanced chain network processing system 54 with network traffic load balancing to form a multiple standby Aid network 5. This multi-backup network 5 allows the entire network to be more redundant and load-balanced. The multiple backup network 5 formed in FIG. 5, when an error occurs in each of the balanced chain network processing systems 4, 50, 52, 54 and the ring network 20 with network traffic load balancing Multiple backup network 5 ensures that the entire network is still connected and each node can communicate correctly.

FIG. 6 is a flow chart for explaining a method for processing a balanced chain network with network traffic load balancing according to an embodiment of the present invention. Referring to FIG. 6, a method for processing a balanced chain network with network traffic load balancing according to an embodiment of the present invention includes steps S10-S80. First, in step S10, the balanced chain network processing method with network traffic load balancing of the present invention evaluates the frequency requirement required to establish a balanced chain network in a network having a plurality of switching nodes. And finding the position of the balance node among the switch nodes according to the frequency demand, and setting the balance node as a central gateway end.

Next, in step S20, a first link is formed by the switch nodes and a primary terminal, and the primary terminal is connected to an endpoint of the central gateway by the first link, and by the switches The node and a secondary terminal form a second link, and the secondary terminal is connected to the other end of the central gateway by the second link, so that a balanced chain network with network traffic load balancing can be formed. road.

Then, in step S30, the central gateway transmits a first loop detection signal to the primary terminal through the first link and transmits a second loop detection through the second link. After the signal is sent to the secondary terminal, the loop detection signal is sent to step S40; in step S40, after the primary terminal receives the first loop detection signal, the primary terminal transmits a first loop confirmation signal to the a central gateway end, and after the secondary terminal receives the second loop detection signal, the secondary terminal transmits a second loop confirmation signal to the central gateway end, and when the central gateway end receives the first loop confirmation signal And the second loop confirmation signal proceeds to step S50; step S50 is to confirm that the central gateway end, the joint points in the first link, the switch nodes in the second link, the Whether the path of the main terminal and the secondary terminal is normal or not.

After the detection is correct, the process proceeds to step S60. When the detection result shows that the central gateway, the first link, the second link, the primary terminal, and the secondary terminal have no errors, the central A central blocking port at the gateway end is switched to a blocking state to avoid looping the first link and the second link by the central gateway end.

When the central blocking port is switched to the blocking state, the process proceeds to step S70. Step S70 is that the central gateway further transmits a plurality of recovery signals to the switch nodes, and the switch nodes continue to forward the restored messages until the primary terminal or the secondary terminal. Finally, in step S80, when the primary terminal, the secondary terminal, and the switch nodes receive the restoration message, the first terminal port, the primary member port, the second terminal port, and the secondary The member port and all member ports of the switch nodes are set to be in the on state, and the MAC address forwarding table is cleared, and the purpose of clearing the layer 2 address forwarding table is to restore the first link and the first The original network path of the two links to restore network load balancing.

FIG. 7 is a flow chart for explaining a method for detecting an error when a balanced chain network with network traffic load balancing detects an error according to an embodiment of the present invention. Referring to FIG. 7, a processing method for detecting a fault in a balanced chain network with network traffic load balancing according to an embodiment of the present invention includes steps S90-S130. First, in step S90, when network traffic load balancing is performed. When the balanced chain network detects that the central gateway end, one of the switch nodes, the primary terminal or the secondary terminal has an error, the process proceeds to step S100.

Step S100 is that the error person (which may be one of the central gateway, the switch node, the primary terminal or the secondary terminal) transmits a signal error message to the central gateway, the signal error message After the transfer is completed, the process proceeds to step S110. In step S110, if an error occurs on the first link, the error occurrence message transmits another signal error message to the primary terminal; if an error occurs on the second link, the error occurs and another error is transmitted. A signal error message to the secondary terminal.

Then, in step S120, after receiving the signal error message, the central gateway terminal immediately changes the state of a central blocking port at the central gateway end from blocking to conducting, and proceeds to step S130. Step S130, the central gateway end clears the second layer address forwarding table of the current device (the device connected to the central gateway end), and the switch node, the primary terminal, and the secondary terminal receive the signal error message. , the second layer address forwarding table of the current device (the device connected to the switch node, the primary terminal, and the secondary terminal) is cleared. The purpose of clearing the Layer 2 address translation table is to quickly switch the original transmission path to the intact link direction by re-learning the Layer 2 address forwarding table when an error occurs. Since the network transmission path is completed in advance, when the signal error or interruption occurs, the signal error message can be used to notify the clearing of the Layer 2 address forwarding table to achieve the transmission of the first network or the second link. Quickly change another good link.

FIG. 8 is a schematic diagram for explaining a processing method for repairing a fault of a balanced chain network with network traffic load balancing according to an embodiment of the present invention. Referring to FIG. 8, a processing method for repairing a fault of a balanced chain network with network traffic load balancing according to an embodiment of the present invention includes steps S140-S210. First, in step S140, the balance is balanced by network traffic load balancing. When the central gateway end of the chain network, one of the switch nodes, one of the primary terminal or the secondary terminal detects an error repair (or signal restoration), the process proceeds to step S150. . Step S150 is to find that the restorer (which may be one of the central gateway, one of the switch nodes, the primary terminal or one of the secondary terminals) transmits a signal recovery message to the central gateway. And it proceeds to step S160. Step S160: After receiving the signal restoration message, the central gateway terminal sends a first loop detection signal to the primary terminal, and transmits a second loop detection signal to the secondary terminal, and then proceeds to step S170-step S210. The processing method of step S170 to step S210 is the same as step S40 to step S80 shown in FIG. 6, and details are not described herein.

On the other hand, in the embodiment of the method for processing a balanced chain network with network traffic load balancing according to the present invention, the interval between the central gateway ends is any one of 10 milliseconds to 100 milliseconds, and may be based on the actual application field. Selected by the needs of the domain. The main terminal includes a first terminal port and a main member port. The secondary terminal includes a second terminal port and a secondary member port. The primary terminal receives the first loop detection signal through the primary member port. The secondary terminal receives the second loop detection signal through the secondary member port until the first loop detection signal is transmitted to the first terminal port, and the second loop detection signal is transmitted to the second terminal port.

It can be seen from the above that the present invention provides a balanced chain network processing system and method. The balanced chain network processing system has a central gateway end as a load balancing center point, and the central gateway end is connected to the main terminal by a plurality of switch nodes respectively. The secondary terminal forms a first link and a second link. The primary and secondary terminals can be connected to another network, such as a link, a ring network, or another balanced chain network. The user can set any of the plurality of switch nodes in the network as the central gateway. Therefore, the balanced chain network processing system of the present invention is very versatile and can be applied to any network. The balanced network processing system and method of the present invention allows the network to operate when an error occurs in a node in the network, and at the same time, has error detection and can detect a node that has an error.

In describing a representative example of the present invention, the present specification has been presented as a specific sequence of steps of the method and/or procedure of the present invention. To the extent that the method or program does not rely on the specific order of steps set forth herein, the method or program should not be limited to the specific order of the steps described. Skilled professionals will understand that other sequences of steps are also possible. Therefore, the specific sequence of steps set forth in this specification should not be construed as limiting the scope of the application. In addition, the scope of the patent application of the method and/or procedure of the present invention should not be limited to the performance of the steps in the order presented, and those skilled in the art can immediately understand that the order can be changed and still remain within the spirit and scope of the present invention. .

Those skilled in the art should be aware that changes can be made to the above examples without departing from the broad inventive concepts. It is understood that the invention is not limited to the specific examples of the invention, but is intended to cover the invention, and the modifications and the scope of the invention as defined in the appended claims.

Claims (12)

 A balanced chain network processing system with network traffic load balancing includes: a primary terminal connected to a central gateway through a first link formed by a plurality of switch nodes; and a primary terminal through which the terminal is A second link formed by the switch node is connected to the central gateway end; wherein the central gateway end transmits a first loop detection signal to the main terminal by using the first link, and borrows Transmitting, by the second link, a second loop detection signal to the secondary terminal; wherein, after the primary terminal receives the first loop detection signal, the primary terminal transmits a first loop confirmation signal to the central gateway End, and after the secondary terminal receives the second loop detection signal, the secondary terminal transmits a second loop confirmation signal to the central gateway end to confirm that the central gateway end, the first link Whether the path formed by the switch node, the switch node in the second link, the primary terminal, and the secondary terminal is normal; wherein the central gateway end is based on the first Network load path and the second link position is adjusted to achieve load balancing effect.    The balanced chain network processing system with network traffic load balancing as described in claim 1 further includes a chain network or a ring network, the chain network or the ring network Connecting to the primary terminal and the secondary terminal; wherein, when the balanced chain network processing system detects that the central gateway, the switch node, the primary terminal, or one of the secondary terminals In the case of an error, the error message is sent to the central gateway, wherein if the error occurs on the first link, the error occurs to transmit another signal error message to the primary terminal, if the error occurs. On the second link, the error person transmits another signal error message to the secondary terminal.    A balanced chain network processing system with network traffic load balancing as described in claim 2, wherein when the central gateway receives the signal error message, it will block a central blocking port at the central gateway end. Setting the state to be on, and clearing the Layer 2 address forwarding table of a device currently connected to the central blocking port, and when the switching node, the primary terminal or the secondary terminal receives the signal error message or the other In the case of a signal error message, the Layer 2 address forwarding table of the other device currently connected to the switch node, the primary terminal or the secondary terminal is cleared.    The balanced chain network processing system with network traffic load balancing as described in claim 1, wherein the primary terminal comprises a first terminal port and a primary member port, and the secondary terminal comprises a second terminal And the primary member port, the primary terminal receives the first loop detection signal by the primary member port, and the secondary terminal receives the second loop detection signal by the secondary member port until the first The loop detection signal is transmitted to the first terminal port and the second loop detection signal is transmitted to the second terminal port.    The balanced chain network processing system with network traffic load balancing as described in claim 1, wherein the detection result shows the first link, the second link, the primary terminal, and the secondary After the terminal has no error, a central blocking port of the central gateway end is switched into a blocking state to avoid looping the first link and the second link by the central gateway end.    The balanced chain network processing system with network traffic load balancing according to claim 5, wherein the central blocking port of the central gateway end is converted into a blocking state, and the central gateway further transmits a plurality of restorations. Signaling to the switch nodes, the switch nodes continue to forward the resume messages until the primary terminal or the secondary terminal, when the primary terminal, the secondary terminal, and the switch nodes receive the restoration message, The first terminal port, the primary member port, the second terminal port, the secondary member port, and all member ports of the switch nodes are set to be in a conductive state and the Layer 2 address forwarding table is cleared.    The balanced chain network processing system with network traffic load balancing as described in claim 1, wherein the period of time is any one of 10 milliseconds to 100 milliseconds.    A method for processing a balanced chain network with network traffic load balancing includes the steps of: estimating a frequency requirement required to establish a balanced chain network in a network having a plurality of switch nodes, and Finding a position of the balance node among the switch nodes, and setting the balance node as a central gateway end; forming a first link by the switch node and a primary terminal, the first a link is connected to an end of the central gateway end, and a second link is formed by the switch node and a secondary terminal, the second link is connected to another end of the central gateway end; the central gateway end is Intersecting a first loop detection signal to the primary terminal by using the first link, and transmitting a second loop detection signal to the secondary terminal by using the second link; when the primary terminal After receiving the first loop detection signal, the primary terminal transmits a first loop confirmation signal to the central gateway end, and after the secondary terminal receives the second loop detection signal, the secondary terminal transmits a second loop confirmation signal to the central gateway end to confirm that the central gateway end, the switch nodes in the first link, the switch nodes in the second link, the primary terminal, and the time Whether the path to the terminal is normal or not.    The method for processing a balanced chain network with network traffic load balancing as described in claim 8 further includes the following steps: when the detection result shows the central gateway end, the first link, the second chain After the main terminal and the secondary terminal have no error, a central blocking port at the central gateway end is converted into a blocking state to prevent the first link and the second link from being formed by the central gateway end. a loop; the central gateway further transmits a plurality of recovery signals to the switch nodes, the switch nodes continuing to forward the resume messages to the primary terminal or the secondary terminal; and when the primary terminal, the secondary terminal, and the primary terminal When the switch node receives the recovery message, the first terminal port, the primary member port, the second terminal port, the secondary member port, and all member ports of the switch nodes are set to be in a conductive state and the second layer is cleared. Address forwarding table.    The method for processing a balanced chain network with network traffic load balancing as described in claim 8 further includes the following steps: when detecting the central gateway, the switch node, the primary terminal, or the time If an error occurs in one of the terminals, the error message is sent to the central gateway; if the error occurs on the first link, the error message will send another signal error message to the primary If the error occurs on the second link, the error occurs, another error message is sent to the secondary terminal; after receiving the signal error message, the central gateway intercepts a central end of the central gateway The status of the port is changed from blocking to conducting; the central gateway clears the Layer 2 address forwarding table of the device currently connected to the central gateway, and the switching node, the primary terminal, and the secondary terminal receive the signal After the error message, the Layer 2 address forwarding table of the device currently connected to the switch node, the primary terminal, and the secondary terminal is cleared.    The method for processing a balanced chain network with network traffic load balancing according to claim 10, further comprising the steps of: the central gateway end, one of the switch nodes, the primary terminal or the time When one of the terminals detects the error repair, it is found that the restorer transmits a signal recovery message to the central gateway end; after receiving the signal recovery message, the central gateway sends the first loop detection signal to the a primary terminal, and transmitting the second loop detection signal to the secondary terminal; after the primary terminal receives the first loop detection signal, the primary terminal transmits the first loop confirmation signal to the central gateway end, and when After the secondary terminal receives the second loop detection signal, the secondary terminal transmits the second loop confirmation signal to the central gateway end to confirm that the central gateway end, the switch nodes in the first link Whether the paths formed by the switch nodes, the primary terminal, and the secondary terminal in the second link are normal.    The method for processing a balanced chain network with network traffic load balancing as described in claim 8 is any one of 10 milliseconds to 100 milliseconds.