TWI420857B - Ring network having trunking link and redundancy operating method thereof - Google Patents

Description

Ring network with convergence link and operation method of redundancy mechanism thereof

The present invention relates to a ring network, and more particularly to a ring network having a convergence link and a redundancy mechanism.

The ring network with redundant mechanism uses a network line to connect a plurality of nodes into a ring path, and selects one node to form a redundant management node, and the redundant management node has a data transmission. And a barrier, the redundant management node transmits an information packet via the data transmission, and the information packet is transmitted through a transmission path and blocked by the barrier when transmitted to the barrier. The redundant management node also transmits a verification packet via the data transmission, and the verification packet is transmitted to the redundant management node through the barrier after the circular path is transmitted.

When the redundant management node cannot receive the verification packet from the barrier, the redundant management node initiates a redundancy mechanism to enable the barrier to allow the information packet to pass through the barrier. The information packet can continue to be transmitted in the ring network.

Referring to the first figure, in order to make the two nodes 1120 and 1130 in the ring network 1000 have a larger network bandwidth and a stronger redundancy mechanism, the network is connected between the two nodes 1120 and 1130. 1210, 1220 are connected to form a converging chain. When a plurality of information packets are transmitted through the data transmission port 1111 and transmitted to the node 1120 via the transmission path D1, the node 1120 distributes the information packets evenly by the network lines 1210, Transfer in 1220.

Please refer to the second figure, if the verification packet is selected for transmission on the network line 1210. When the network line 1210 is disconnected, the redundant management node 1110 cannot receive the verification packet. At this time, the redundancy management node 1110 starts a redundancy mechanism, and the barrier 1111 is enabled to allow the information packet to pass. Block 埠1112.

However, on the other hand, the information packet can be transmitted via the network line 1220 and is not blocked by the blocking port 1112, and the information packet forms a network looping in the ring network 1000. Constantly transmitted over the ring network 1000, thereby occupying the bandwidth within the ring network 1000.

In order to improve the above-mentioned prior art, the network loop is lost. The object of the present invention is to provide a ring network with an aggregation link in which redundant management nodes can be used in the ring. The forward path of the network transmits a forward verify packet and transmits a reverse verify packet with the reverse path, the forward verify packet and the reverse verify packet being assigned different network line transmissions in the aggregation link. The redundancy mechanism is initiated when the redundant management node cannot receive the forward authentication packet and the reverse verification packet.

In order to achieve the above object, the present invention provides a ring network having an aggregation link, which includes a first node, a second node, and a redundant management node. The second node is connected to the first node by using a first network line and a second network line to form an aggregation link.

The redundant management node includes a data transmission port and a blocking port. The data transmission system is coupled to the first node and configured to transmit a forward verification packet and a plurality of information packets. The blocking system is coupled to the second node and configured to transmit a reverse verification packet and block the information packets. The forward verification packet is transmitted to the barrier via the first network line, and the reverse verification packet is transmitted to the data transmission port via the second network line, and the redundant management node cannot receive the forward verification. When the packet and the reverse verification packet are verified, the redundant management node turns on the blocking port to allow the information packet to pass.

In order to achieve the above object, the present invention further provides a method for operating a redundancy mechanism with a converged link ring network, the operation method comprising the following steps. A data transmission transmission is performed by one of the redundant management nodes, and a forward verification packet is transmitted, and the forward verification packet is transmitted to the barrier via the first network line. A reverse authentication packet is transmitted by one of the redundant management nodes, and the reverse verification packet is transmitted to the data transmission port via the second network line. When the redundant management node cannot receive the forward verification packet and the reverse verification packet, the barrier is turned on.

Since the redundant management node of the present invention transmits the forward verification packet and the reverse verification packet respectively through the data transmission and the blocking, the forward verification packet and the reverse verification packet are also transmitted to different first networks. Road line and the second network line. Therefore, when the first network line and the second network line are disconnected, the redundant management node does not receive the forward verification packet and the reverse verification packet, and then the redundancy mechanism is enabled. This ensures that when the ring network starts the redundant machine, it can avoid the lack of network loops in the prior art, and can ensure that the network bandwidth of the ring network is not formed into a network loop. The information packet is occupied.

Transmitting a forward verification packet on the forward path of the ring network and transmitting a reverse verification packet to the reverse path, where the forward verification packet and the reverse verification packet are different in the aggregation link transmission. The redundancy mechanism is initiated when the redundant management node cannot receive the forward authentication packet and the reverse verification packet.

The advantages and spirit of the present invention will be further understood from the following detailed description of the invention.

Please refer to the third figure, which is a schematic diagram of a first embodiment of a ring network 2000 with an aggregation link according to the present invention. The ring network 2000 is a type of network topology, and the ring network 2000 includes a plurality of nodes 100 and a plurality of cables 200. The above-mentioned node 100 is usually composed of a computer, a terminal device or a network device, etc., and the node 100 can be a switch. Each of the nodes 100 can have at least two communication ports and are connected in series via the network lines 200 to form a circular path (see the third figure), and the network lines 200 can be double A network transmission medium such as a twisted pair cable, a coaxial cable, a fiber optic cable, or a wireless communication.

Each node 100 can be connected to a plurality of computer devices (not shown), which can be a network communication capability for a personal computer, a PDA, a laptop, or a smart phone. Electricity Brain device.

In this embodiment, the nodes 100 may be provided with a redundancy management node or a ring master (RM), a plurality of network nodes 120, a first node 130, and a second node 140. The redundant management node 110 sequentially connects a plurality of network nodes 120, the first node 130, the second node 140, and the plurality of network nodes 120 via the network line 200 according to a forward path D2, and then connects back to the network node 120. The nodes 110 are redundantly managed to form a circular path.

The first node 130 and the second node 140 are connected by a plurality of network lines 200, and the number of the network lines 200 may be two, three, or four or more. In this embodiment, the first node 130 has three communication units 131, 132, and 133, and the second node 140 has three communication ports 141, 142, and 143. The network line 200 is configured to connect a first network line 210 and a second network line 220. The first network line 210 is connected to the communication between the communication port 132 of the first node 130 and the second node 140. 142. The second network line 220 is connected to the communication port 133 of the first node 130 and the communication port 143 of the second node 140 to form a trunking link. The number of network nodes 120 mentioned above, or the order in which the nodes 100 are connected, is not limited, or the number of convergence links formed between the two nodes 100 does not exceed the spirit of the present invention.

The redundant management node 110 includes a data transmission port 111 and a blocking port 112. The redundant management node 110 transmits a forward verification packet and a plurality of information packets via the data transmission port 111 along the forward path D2, and transmits a reverse verification seal along the reverse path D3 via the blocking port 112. package. The redundant management node 110 sends a forward verification packet and the reverse verification packet after the interval interval.

For example, the data transmission port 111 is connected to the communication port 121 of the network node 120 by a network line 200. Therefore, the forward verification packet and the plurality of information packets transmitted by the data transmission port 111 are transparent. The network line 200 is transmitted to the network node 120 via the communication port 121. After receiving the forward verification packet and the information packet, the network node 120 can transmit to the next node 100 via the communication port 122.

The first node 130 receives the forward verification packet and the information packet transmitted along the forward path D2 via a communication port 131. The first node 130 has a provisioning mechanism (not shown), and the provisioning mechanism can be a program and stored in the first node 130. The first node 130 receives the forward verification packet and the information packet can specify that the forward verification packet is transmitted via the communication port 132, and the provisioning mechanism can send the information packet to the communication port 132. And communicating with the communication port 133 to increase the network bandwidth between the first node 130 and the second node 140, that is, increasing the sum of the information packet transmission between the first node 130 and the second node 140. . The forward verification packet and the information packet transmitted via the communication port 132 are transmitted to the communication port 142 of the second node 140 via the first network line 210, and the information packets transmitted via the communication port 133 The communication port 143 of the second node 140 is transmitted via the second network line 220. Then, the second node 140 transmits the received forward verification packet and the information packet to the information packet via the communication port 141. In this embodiment, the forward verification packet is transmitted by the communication port 141. The information packets, and the plurality of network nodes 120 is transmitted to the blocking port 112, and in another embodiment, may not be transmitted to the blocking port 112 via a plurality of network nodes 120.

When the forward verification packet and the information packet are transmitted to the blocking port 112, the blocking block 112 blocks the information packet from entering the redundant management node 110, but the blocking port 112 allows the forward verification packet to enter the Redundant management node 110.

The reverse authentication packet transmitted by the redundant management node 110 along the reverse path D3 via the blocking port 112 is transmitted to the communication port 141 of the second node 140 by the foregoing manner, and the second node 140 also has a provisioning mechanism. The provisioning mechanism can interact with the deployment machine of the first node 130. When the provisioning mechanism of the first node 130 transmits the forward verification packet via the first network line 210, the provisioning mechanism of the second node 140 transmits the reverse verification packet via the second network line 220. On the other hand, when the provisioning mechanism of the first node 130 transmits the forward verification packet via the second network line 220, the provisioning mechanism of the second node 140 passes the reverse verification packet to the first network line 210. transmission. In this embodiment, the reverse verification packet is transmitted through the communication port 143 of the second node 140, and is transmitted to the communication port 133 of the first node 130 via the second network line 220. The reverse verification packet is then transmitted to the data transmission port 111 via the communication port 131 of the first node 130 for transmission to the redundancy management node 110.

Referring to the fourth figure, when the first network line 210 is disconnected, the forward verification packet cannot be transmitted to the redundant management node 110 via the blocking port 112. However, the reverse verification packet can still be transmitted to the data transmission port 111 via the second network line 220 to enter the redundant management node 110, and The information packets may also be transmitted via the second network line 220 via the provisioning mechanism of the first node 130. Therefore, the redundancy management node 110 can determine that the information packets can be smoothly transmitted in the ring network 2000, and the ring network 2000 is in a connected state, and does not need to initiate a redundancy mechanism, that is, The blocking port 112 is turned on to pass the information packets to the redundant management node 110 via the blocking port 112.

Similarly, in another embodiment, if the second network line 220 is disconnected, and the first network line 210 is not disconnected, the forward verification packet may be sent through the first network according to the foregoing manner. The circuit line 210 is transmitted to the redundant management node 110, and the redundant management node 110 can determine that the information packets can be smoothly transmitted in the ring network 2000 without starting a redundancy mechanism. Therefore, the present invention can avoid the problem of network looping in the prior art.

Referring to FIG. 5, the first network line 210 and the second network line 220 are both disconnected. Therefore, the forward verification packet cannot be transmitted to the redundant management node 110 via the first network line 210, and the reverse verification packet cannot be transmitted to the redundant management node 110 via the second network line 220, and the information packet is also The redundant management node 110 cannot be transferred via the first network line 210 and/or the second network line 220. At this time, the redundant management node 110 cannot accept the forward verification packet and the reverse verification packet, and the redundancy management node 110 activates a redundancy mechanism to turn on the blocking node 112 to allow the information packets to pass to maintain the The ring network 2000 is in a connected state.

Please refer to the sixth figure, which is a schematic diagram of a second embodiment of the ring network 3000 with convergence links of the present invention. Different from the first embodiment, the ring network 3000 further includes a third node 150 and a fourth node. 160. With a fifth node 170, the network node 120 may have only one.

A further progress between the first node 130 and the second node 140 includes a third network line 230. The third network line 230 is connected to the first node 130 and the second node 140, and forms an aggregation link with the first network line 210 and the second network line 220, and the information packets are The first network line 210, a second network line 220 are transmitted, and transmitted to the third network line 230. When the first network line 210 is disconnected, the forward verification packet is transmitted via the third network line 230. If the second network line 220 or the third network line 230 is also disconnected at this time, since the redundant management node 110 can also receive the forward verification packet or the forward verification packet, the The redundant management node 110 considers that the ring network 2000 is in a connected state, so there is no need to activate a redundancy mechanism to turn on the blocking port 112. Similarly, when the second network line 220 is disconnected, the reverse verification packet is transmitted via the third network line 230. Finally, until the first network line 210, the second network line 220, and the third network line 230 are disconnected, the redundant management node 110 does not receive the forward verification packet and the forward verification packet, The redundant management node 110 initiates a redundancy mechanism to turn on the blocking port 112 to allow the information packets to enter and exit the redundant management node 110 via the blocking port 112 to maintain the ring network 2000 in a connected state.

In addition, in this embodiment, the second node 140 and the third node 150 also have a plurality of network lines 200 connected to each other and form an aggregation link. The fourth node 160 is connected to the redundant management node 110. The fourth node 160 and the fifth node 170 also have a plurality of network lines 200 connected to each other and form an aggregation link. Therefore, the present invention can be utilized in numerous Different implementations of a ring network having a converged connection include a converging link formed by three or more network lines 200.

Please refer to the seventh figure, which is a flow chart of the steps of the method for operating the ring network 2000 with the aggregation link and its redundancy mechanism. Please refer to the third to sixth figures for the following component symbols. The ring network 2000 is connected in series with a redundant management node 110, a first node 130 and a second node 140. The first node 130 and the second node 140 are connected to a first network. The circuit line 210, a second network line 220 and a third network line 230 are connected by a convergence link. The operation method includes the following steps.

A plurality of information packets are transmitted by the data transmission port 111 of the redundant management node 110, and the information packets are transmitted through the first network line 210, the second network line 220, and the third network line 230. The buffer 112 is blocked and the information packets are blocked from entering the redundant management node 110 (step S101).

A forward transmission packet is transmitted by one of the redundant management nodes 110, and the forward verification packet is transmitted to the barrier 112 via the first network line 210. When the first network line 210 is disconnected, the forward verification packet is transmitted via the third network line 230 (step S103).

A reverse authentication packet is transmitted by one of the redundant management nodes 110, and the reverse verification packet is transmitted to the data transmission port 111 via the second network line 220. When the second network line 220 is disconnected, the reverse verification packet is transmitted via the third network line 230 (step S105).

When the redundant management node 110 cannot receive the forward verification packet and the reverse verification packet, the barrier 112 is turned on (step S107).

In summary, since the redundant management node 110 of the present invention transmits the forward verification packet and the reverse verification packet via the data transmission port 111 and the blocking port 112, the forward verification packet and the reverse verification packet are also The first network line 210 and the second network line 220 are transmitted differently. Therefore, when the first network line 210 and the second network line 220 are disconnected, the redundant management node 110 does not receive the forward verification packet and the reverse verification packet, and then the redundancy mechanism is enabled. In this way, when the ring network 2000 starts the redundant machine, the lack of network loops in the prior art can be avoided, and the network bandwidth of the ring network 2000 can be prevented from being formed into a network loop. Information packets occupy.

The features and spirit of the present invention will be more apparent from the detailed description of the preferred embodiments. On the contrary, the intention is to cover various modifications and equivalents within the scope of the invention as claimed.

[Practical Technology]

1000‧‧‧ ring network

1100, 1120, 1130‧‧‧ nodes

1110‧‧‧Redundant management node

1111‧‧‧ Data Transfer埠

1112‧‧‧Barrier

1200, 1210, 1220‧‧‧ network lines

D1‧‧‧ transmission path

[this invention]

2000, 3000‧‧‧ ring network

100‧‧‧ nodes

110‧‧‧Redundant Management Node

111‧‧‧Data transmission埠

112‧‧‧Barrier

120‧‧‧Network node

121, 122‧‧‧Communication埠

130‧‧‧first node

131, 132, 133‧‧‧Communication埠

140‧‧‧second node

141, 142, 143‧‧‧Communication埠

150‧‧‧ third node

160‧‧‧ fourth node

170‧‧‧ fifth node

200‧‧‧Network lines

210‧‧‧First network line

220‧‧‧Second network line

230‧‧‧ third network line

D2‧‧‧ Forward path

D3‧‧‧Reverse path

The first figure is a schematic diagram of a ring network having a converging chain; the second figure is a schematic diagram of a ring network having a converging chain, wherein one of the network lines in the converging chain The third diagram is a schematic diagram of a first embodiment of the ring network with convergence links of the present invention; and the fourth diagram is the first implementation of the ring network with convergence links of the present invention. A schematic diagram of an example in which the first network line is disconnected; and a fifth diagram is a schematic diagram of a first embodiment of the ring network having an aggregation link according to the present invention, wherein the first network line and the second network The circuit diagrams are all broken lines; the sixth diagram is a schematic diagram of a second embodiment of the ring network with convergence links of the present invention; and the seventh diagram is a ring network with convergence links of the present invention and A flow chart of the steps of the operation of the redundancy mechanism.

2000, 3000‧‧‧ ring network

100‧‧‧ nodes

110‧‧‧Redundant Management Node

111‧‧‧Data transmission埠

112‧‧‧Barrier

120‧‧‧Network node

121, 122‧‧‧Communication埠

130‧‧‧first node

131, 132, 133‧‧‧Communication埠

140‧‧‧second node

141, 142, 143‧‧‧Communication埠

150‧‧‧ third node

160‧‧‧ fourth node

170‧‧‧ fifth node

200‧‧‧Network lines

210‧‧‧First network line

220‧‧‧Second network line

230‧‧‧ third network line

D2‧‧‧ Forward path

D3‧‧‧Reverse path

Claims (13)

A ring network having an aggregation link includes: a first node; a second node is connected to the first node by using a first network line and a second network line to form an aggregation link And a redundant management node, comprising: a data transmission, coupled to the first node, and configured to transmit a forward verification packet and a plurality of information packets; and a blocking port coupled to the second node And for transmitting a reverse verification packet, and blocking the information packet; wherein the forward verification packet is transmitted to the barrier via the first network line, and the reverse verification packet is transmitted to the data via the second network line After the redundant management node cannot receive the forward verification packet and the reverse verification packet, the redundant management node turns on the barrier to allow the information packet to pass. For example, in the ring network with the aggregation link described in claim 1, the redundant management node continuously transmits one forward verification packet and the reverse verification packet after an interval interval. The ring network with an aggregation link as described in claim 1 further includes a plurality of network nodes, the first node, the second node, the redundant management node, and the network The nodes are connected via a network line to form a circular path. The ring network having an aggregation link according to claim 1, wherein the information packet is transmitted via the first network line and a second network line. The ring network having an aggregation link according to claim 1, further comprising a third network line connecting the first node and the second node, and The first network line forms an aggregation link with the second network line. The ring network having an aggregation link according to claim 5, wherein the forward verification packet is transmitted via the third network line when the first network line is disconnected. The ring network having an aggregation link according to claim 5, wherein when the second network line is disconnected, the reverse verification packet is transmitted via the third network line. The ring network having an aggregation link according to claim 5, wherein the information packet is transmitted via the first network line, a second network line, and the third network line. A method for operating a redundancy mechanism of a ring network with an aggregation link, wherein the ring network sequentially connects a redundant management node, a first node and a second node in a network route, the first The node and the second node are connected by a first network line and a second network line in an aggregation chain. The operation method comprises the following steps: (a) transmitting, by the one of the redundant management nodes, a forward verification packet, the forward verification packet being transmitted to the barrier via the first network line; (b) being managed by the redundancy The blocking of the node transmits a reverse verification packet, and the reverse verification packet is transmitted to the data transmission via the second network line; (c) when the redundant management node cannot receive the forward verification packet and When the packet is verified in the reverse direction, the barrier 导 is turned on. For the operation method of the redundancy mechanism of the ring network with the convergence link described in claim 9 of the patent application, the following steps are further included before the step (a), and the data transmission by the redundant management node is further changed. Further transmitting a plurality of information packets, the information packets being transmitted via the first network line and the second network line, the blocking and blocking the information packets from entering the redundant management node. The method for operating a redundancy mechanism of a ring network with an aggregation link according to claim 9 further includes a third network line, the third network line connecting the first node and The second node forms an aggregation link with the first network line and the second network line. The method for operating the redundancy mechanism of the ring network with the convergence link as described in claim 11 further includes a step (a1) after the step (a): when the first network line is broken When the line is online, the forward verification packet is transmitted via the third network line. The method for operating the redundancy mechanism of the ring network with the convergence link as described in claim 11 further includes a step (b1) after the step (b): when the second network line is broken When the line is online, the reverse verification packet is transmitted via the third network line.