Hybrid networking architecture

Abstract

The utility model provides a hybrid networking architecture, which comprises an industrial network and an office information network, the industrial network comprises an industrial sub-network, a first control convergence layer switch and a second control convergence layer switch, the first control convergence layer switch and the second control convergence layer switch are in redundant physical connection, and the first control convergence layer switch and the second control convergence layer switch are in redundant physical connection. Two layers of redundant links are respectively formed between the industrial sub-network and the first control convergence layer switch and between the industrial sub-network and the second control convergence layer switch, and an office information network is directly connected with at least one of the first control convergence layer switch and the second control convergence layer switch. On the basis of the structure, the office information network is accessed without losing the redundancy characteristic of the industrial two-layer networking, the networking scheme is simple, clear, practical and reliable, and the safety architecture requirement for rapidly building the hybrid rapid networking of the factory industrial network and the office information network is met.

Description

Technical Field

[0001] The utility model embodiment relates to the field of industrial communication networks, and in particular to a hybrid networking architecture. Background Art

[0002] In some factories or workshops, there are both industrial network equipment and office information network equipment. The traditional industrial network architecture and the traditional office information network architecture have their own design concept systems. Therefore, in the hybrid networking architecture where industrial networks and office information networks coexist, there must be obvious boundaries. For example, each side is networked separately and then interconnected through boundary devices (such as firewalls); therefore, in this scenario, when the industrial network and office network need to be highly integrated, the network connection will be relatively complex, and the implementation and maintenance costs will also be relatively high.

[0003] Based on this, a new hybrid networking architecture is needed to make network integration more flexible, with lower networking costs, and low implementation and maintenance costs without losing the respective characteristics of industrial networks and office information networks. Utility Model Content

[0004] This embodiment provides a hybrid networking architecture to at least partially solve the above problems.

[0005] According to an embodiment of the utility model, a hybrid networking architecture includes: an industrial network and an office information network, the industrial network includes an industrial sub-network, a first control aggregation layer switch and a second control aggregation layer switch, wherein the first control aggregation layer switch and the second control aggregation layer switch are physically connected redundantly, the industrial sub-network forms a Layer 2 redundant link with the first control aggregation layer switch and the second control aggregation layer switch respectively, and the office information network is directly connected to at least one of the first control aggregation layer switch and the second control aggregation layer switch.

[0006] Furthermore, the first control aggregation layer switch and the second control aggregation layer switch are switches supporting the HRP protocol, the PLC protocol, the RSTP protocol, the LACP protocol and the STANDBY protocol.

[0007] Furthermore, it also includes a first data analysis layer switch and a second data analysis layer switch, and there is a redundant physical connection between the first data analysis layer switch and the second data analysis layer switch, the first data analysis layer switch is connected to the first control aggregation layer switch, and the second data analysis layer switch is connected to the second control aggregation layer switch, and the first data analysis layer switch, the second data analysis layer switch, the first control aggregation layer switch and the second control aggregation layer switch form a second-layer redundant link.

[0008] Furthermore, the industrial sub-network is one of an industrial ring network and an industrial cut-ring network.

[0009] Furthermore, when the industrial subnetwork is an industrial ring network, the industrial subnetwork includes at least a first ring network switch and a second ring network switch, the first ring network switch is connected to one of the first control aggregation layer switch and the second control aggregation layer switch, the second ring network switch is connected to the other of the first control aggregation layer switch and the second control aggregation layer switch, and a Layer 2 redundant link is formed between the first ring network switch, the second ring network switch and the first control aggregation layer switch and the second control aggregation layer switch.

[0010] Furthermore, when the industrial sub-network is an industrial cut-ring network, the industrial sub-network includes a cut-ring network switch, and the cut-ring network switch forms a layer 2 redundant link with the first control aggregation layer switch and the second control aggregation layer switch respectively.

[0011] Furthermore, the office information network includes a first office information network switch, and the first office information network switch is redundantly connected to the first control aggregation layer switch and the second control aggregation layer switch respectively.

[0012] Furthermore, the first office information network switch is respectively connected to the first control aggregation layer switch and the second control aggregation layer switch through RSTP protocol.

[0013] Furthermore, the office information network also includes a second office information network switch, and the second office information network switch is connected to the first control aggregation layer switch and one of the first control aggregation layer switches.

[0014] Furthermore, the second office information network switch is connected to one of the first control aggregation layer switch and the second control aggregation layer switch through the LACP protocol.

[0015] It can be seen that the hybrid networking architecture of the embodiment of the utility model, based on the first control aggregation layer switch and the second control aggregation layer product with the second-layer redundancy characteristics, builds a two-layer redundant networking architecture in the internal level of the industrial network, while maintaining the industrial two-layer networking redundancy characteristics, highly redundantly accesses the office information network, and the networking solution is simple, clear, practical and reliable, meeting the security architecture requirements for quickly building a hybrid fast networking of the factory industrial network and the office information network. Moreover, the structure meets the moderate redundancy and has the effect of rapid convergence. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following drawings are only intended to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0017] Figure 1 A schematic diagram of the topological connection of industrial network and office information network in the prior art is shown;

[0018] Figure 2 A topological connection diagram of a hybrid networking architecture according to an embodiment of the present utility model is shown;

[0019] The reference numerals are as follows:

[0020] DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model is further described in detail with examples below.

[0022] Figure 1 A schematic diagram of the topological connection of industrial network and office information network in the prior art is shown;

[0023] Figure 2 A topological connection diagram of a hybrid networking architecture according to an embodiment of the present utility model is shown;

[0024] like Figure 1 As shown, in the prior art, the industrial network includes a control unit network 110, a control convergence layer network 120, and a data analysis convergence layer network 130, wherein the control unit network 110 includes various terminal devices, sensors, control devices (such as PLC), I / O devices, etc., each of which is connected to a switch at the device end (such as SCALANCE XC200, SCALANCE SC600, etc.), and accesses the control convergence layer network 120 through the switch at the device end. The control convergence layer network 120 includes a control system (such as a SCADA system), an operation station, etc., each of which is connected to a switch at the control layer (such as SCALANCE XM416), and accesses the data analysis convergence layer network 130 through the switch at the control layer. The data analysis convergence layer network 130 includes, for example, MES, a data analysis server, etc., which is connected to a corresponding switch (such as SCALANCE XR500), and accesses an industrial firewall (such as RUG GCOM) between the industrial network and the office information network 200 through the switch. 1500+APE1808) to achieve interconnection between the industrial network and the office information network 200, and part of the office information network 200 is connected to the industrial firewall access through the office information network switch.

[0025] In this topology, in order to meet the industrial redundancy requirements, in the control unit network 110 at the bottom of the industrial network, two SCALANCE XC200s are used as a ring of the HRP ring network, and each is connected to the two SCALANCE XC200 switches of the control convergence layer network 120 to form a second-layer redundant link; in the control convergence layer network 120, the two SCALANCE XC200 switches are also connected to the HRP ring network as a ring, and are respectively connected to the two SCALANCE SC600 switches, and also form a second-layer redundant link; the two SCALANCE SC600 switches in the control convergence layer network 120 are respectively connected to the two SCALANCE XR500s of the data analysis convergence layer of the industrial network, and the two SCALANCE XR500s are respectively used as a ring of the HRP ring network, and form a second-layer redundant link with the two SCALANCE SC600 switches in the control convergence layer network 120; the two SCALANCE The HRP ring network where the XR500 is located is connected to the firewall device, and is connected to the external office information network 200 through the firewall device to achieve interconnection and communication between the two.

[0026] It can be seen that under the premise of meeting the requirements of the industrial network, the office information network 200 must be connected to the industrial network through a firewall device. When there is a need to add the office information network 200 inside the industrial network, it will be relatively complicated if the existing access mode is followed.

[0027] Figure 2 The hybrid networking architecture in the embodiment includes an industrial network and an office information network 200. The industrial network includes at least an industrial sub-network 100, a first control aggregation layer switch 1, and a second control aggregation layer switch 2. The first control aggregation layer switch 1 and the second control aggregation layer switch 2 are redundantly connected to each other. The industrial sub-network 100 forms a Layer 2 redundant link with the first control aggregation layer switch 1 and the second control aggregation layer switch 2 respectively, and the office information network 200 is directly connected to at least one of the first control aggregation layer switch 1 and the second control aggregation layer switch 2.

[0028] Specifically, the industrial subnetwork 100 can logically send data to the first control aggregation layer switch 1 and the second control aggregation layer switch 2 at the same time. When a problem occurs in any link between the industrial subnetwork 100 and either of them, the link between the industrial subnetwork 100 and the other switch is enabled, thereby realizing the second-layer redundant link connection.

[0029] During implementation, the first control aggregation layer switch 1 and the second control aggregation layer switch 2 are switches supporting an industrial layer 2 redundancy protocol, such as SCALANCE managed layer 2 switches.

[0030] Furthermore, the first control aggregation layer switch 1 and the second control aggregation layer switch 2 are configured to support the HRP protocol, the PLC protocol, the RSTP protocol, the LACP protocol and the STANDBY protocol.

[0031] Specifically, the first control aggregation layer switch 1 and the second control aggregation layer switch 2 are connected in a ring network; wherein, HRP is an industrial high-speed redundant ring network protocol, PLC protocol is an industrial passive listening control protocol, RSTP protocol is a rapid spanning tree protocol, LACP protocol is a link aggregation protocol, OSPF protocol represents open shortest path dynamic routing, and STANDBY protocol is an industrial ring network redundant coupling protocol.

[0032] Furthermore, the first control aggregation layer switch 1 and the second control aggregation layer switch 2 are also configured to support OSPF protocol, VLAN protocol and VRRP protocol. VLAN protocol stands for Virtual Local Area Network protocol, VRRP protocol stands for Virtual Redundant Routing Protocol, and OSPF stands for Open Shortest Path Dynamic Routing.

[0033] Furthermore, it also includes a first data analysis layer switch 3 and a second data analysis layer switch 4, and there is a redundant physical connection between the first data analysis layer switch 3 and the second data analysis layer switch 4. The first data analysis layer switch 3 is connected to the first control aggregation layer switch 1, and the second data analysis layer switch 4 is connected to the second control aggregation layer switch 2. The first data analysis layer switch 3, the second data analysis layer switch 4, the first control aggregation layer switch 1 and the second control aggregation layer switch 2 form a second-layer redundant link.

[0034] Based on this embodiment, the industrial network also includes a data analysis convergence layer logically located above the control convergence layer, and the data analysis convergence layer includes a first data analysis layer switch 3 and a second data analysis layer switch 4, which are respectively connected to the first control convergence layer switch 1 and the second control convergence layer switch 2 to form a layer 2 redundant link, further meeting the layer 2 redundant requirements of the industrial network. Specifically, the first data analysis layer switch 3 and the second data analysis layer switch 4 are switches with industrial layer 2 redundant protocol support, such as SCALANCE managed layer 2 switches.

[0035] Further, the first data analysis layer switch 3 and the second data analysis layer switch 4 are configured to support the LACP protocol and the OSFP protocol, and optionally, are configured to support the VLAN protocol and the VRRP protocol.

[0036] Furthermore, the first data analysis layer switch 3 and the second data analysis layer switch 4 can also be connected to other networks 300 respectively.

[0037] Furthermore, the industrial sub-network 100 is one of an industrial ring network and an industrial cut-ring network.

[0038] Industrial ring network and industrial switching network are common types of industrial networks. An industrial ring network is, for example, an HRP ring network, and an industrial switching ring network is, for example, an SSMR switching ring network.

[0039] Further, when the industrial subnetwork 100 is an industrial ring network, the industrial subnetwork 100 includes at least a first ring network switch 11 and a second ring network switch 13. The first ring network switch 11 is connected to one of the first control aggregation layer switch 1 and the second control aggregation layer switch 2. The second ring network switch 13 is connected to the other of the first control aggregation layer switch 1 and the second control aggregation layer switch 2. A Layer 2 redundant link is formed between the first ring network switch 11, the second ring network switch 13 and the first control aggregation layer switch 1 and the second control aggregation layer switch 2.

[0040] For example, the industrial subnetwork 100 is an industrial ring network, including a first ring network switch 11 and a second ring network switch 13, and optionally also including a third ring network switch 15 and a fourth ring network switch 17. The third ring network switch 15 and the fourth ring network switch 17 and the first ring network switch 11 and the second ring network switch 13 jointly form an HRP ring network. The first ring network switch 11 is connected to the first control aggregation layer switch 1, and a Standby protocol connection is set between the two. The second ring network switch 13 is connected to the second control aggregation layer switch 2, and a Standby protocol is also set between the two. The Standby protocol represents an industrial ring network redundant coupling protocol; by default, the data of the ring network is set to be sent to the first control aggregation layer switch 1 via the first ring network switch 11. When a special situation occurs, the link between the first ring network switch 11 and the first control aggregation layer switch 1 is disconnected, and the link between the second ring network switch 13 and the second control aggregation layer switch 2 is opened. At this time, the data of the ring network is sent from the second ring network switch 13 to the second control aggregation layer switch 2.

[0041] In addition, the first control aggregation layer switch 1 and the second control aggregation layer switch 2 are set to be connected in a ring network and monitor each other's heartbeats. When one of the switches fails, the other switch can be enabled as a redundant backup.

[0042] Furthermore, when the industrial sub-network 100 is an industrial cut-ring network, the industrial sub-network 100 includes a cut-ring network switch 20, and the cut-ring network switch 20 forms a layer 2 redundant link with the first control aggregation layer switch 1 and the second control aggregation layer switch 2 respectively.

[0043] Specifically, when the industrial subnetwork 100 is an SSMR network, one or more ring network terminals 22 share a core network switch, which is respectively connected to the first control aggregation layer and the second control aggregation layer. By default, the link between the network switch and the first control aggregation layer switch 1 is connected, and the link between the network switch and the second control aggregation layer switch 2 is disconnected. The network switch sends the data of the industrial ring network to the first control aggregation layer switch 1. When a special situation occurs, the link between the network switch and the first control aggregation layer switch 1 is disconnected, and the link between the network switch and the second control aggregation layer switch 2 is connected, and the data of the industrial ring network is sent to the second control aggregation layer switch 2.

[0044] It should be noted that the industrial network may also include multiple industrial sub-networks 100, for example, another HRP ring network formed by the logical redundancy of the fifth ring network switch 31 and the sixth ring network switch 33, the fifth ring network switch 31 and the sixth ring network switch 33 respectively form a layer 2 redundant link with the first control aggregation layer switch 1 and the second control aggregation layer switch 2, meeting the industrial layer 2 redundancy requirements. In implementation, the networking method is not strictly limited.

[0045] Furthermore, the office information network 200 includes a first office information network switch 201 , and the first office information network switch 201 is redundantly connected to the first control aggregation layer switch 1 and the second control aggregation layer switch 2 , respectively.

[0046] When there is a need to add an office information network 200 to the industrial network, the first control aggregation layer switch 1 and the second control aggregation layer switch 2 both have the redundancy features of commercial switches, such as supporting the Rapid Spanning Tree RSTP protocol or the Link Aggregation Protocol. Therefore, the first office information network switch 201 can be directly connected to the first control aggregation layer switch 1 and the second control aggregation layer switch 2, respectively, to achieve seamless and redundant access of the office information network 200 to the industrial network. Specifically, the first office information network switch 201 is an access service switch for the workshop office network, such as VoIP voice, video and other services, which meets the access requirements of office network equipment.

[0047] Furthermore, the first office information network switch 201 is respectively connected to the first control aggregation layer switch 1 and the second control aggregation layer switch 2 through RSTP protocol communication. The RSTP protocol stands for IT Rapid Spanning Tree Protocol.

[0048] Furthermore, the office information network 200 further includes a second office information network switch 202 , and the second office information network switch 202 is connected to the first control aggregation layer switch 1 and one of the first control aggregation layer switch 1 .

[0049] In this embodiment, in addition to the first office information network switch 201, the office information network 200 may also include one or more other office information network switches, such as the second office information network switch 202. In the absence of a redundant backup requirement, the second office information network switch 202 may be connected to the first control aggregation layer switch 1 and one of the first control aggregation layer switch 1, and specifically, LACP protocol communication may be adopted.

[0050] Optionally, the second office information network switch 202 and the first control aggregation layer switch 1 and one of the first control aggregation layer switches 1 adopt a link aggregation form of dual-link LACP communication to increase link bandwidth.

[0051] From the above, it can be seen that the hybrid networking architecture based on the embodiment of the utility model can achieve seamless connection between the industrial network and the office information network, while still meeting the second-layer redundancy requirements of the industrial network without excessive redundancy and rapid convergence.

[0052] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0053] Nouns and pronouns relating to persons in this patent application are not limited to a specific gender.

Claims

1. A hybrid networking architecture, characterized in that: include: An industrial network and an office information network, wherein the industrial network comprises an industrial sub-network (100), a first control aggregation layer switch (1) and a second control aggregation layer switch (2), wherein the first control aggregation layer switch (1) and the second control aggregation layer switch (2) are physically connected in a redundant manner, a second-layer redundant link is formed between the industrial sub-network (100) and the first control aggregation layer switch (1) and the second control aggregation layer switch (2), respectively, and the office information network is directly connected to at least one of the first control aggregation layer switch (1) and the second control aggregation layer switch (2).

2. The hybrid networking architecture according to claim 1, characterized in that: The first control aggregation layer switch (1) and the second control aggregation layer switch (2) are switches that support the HRP protocol, the PLC protocol, the RSTP protocol, the LACP protocol and the STANDBY protocol.

3. The hybrid networking architecture according to claim 1, characterized in that: The invention also comprises a first data analysis layer switch (3) and a second data analysis layer switch (4), wherein the first data analysis layer switch (3) and the second data analysis layer switch (4) are redundantly physically connected, wherein the first data analysis layer switch (3) is connected to the first control aggregation layer switch (1), and the second data analysis layer switch (4) is connected to the second control aggregation layer switch (2), and the first data analysis layer switch (3), the second data analysis layer switch (4), the first control aggregation layer switch (1) and the second control aggregation layer switch (2) form a second-layer redundant link.

4. The hybrid networking architecture according to any one of claims 1 to 3, characterized in that: The industrial sub-network (100) is one of an industrial ring network and an industrial cut-ring network.

5. The hybrid networking architecture according to claim 4, characterized in that: When the industrial sub-network (100) is an industrial ring network, the industrial sub-network (100) comprises at least a first ring network switch (11) and a second ring network switch (13), wherein the first ring network switch (11) is connected to one of the first control aggregation layer switch (1) and the second control aggregation layer switch (2), and the second ring network switch (13) is connected to the other of the first control aggregation layer switch (1) and the second control aggregation layer switch (2), and a layer 2 redundant link is formed between the first ring network switch (11), the second ring network switch (13), the first control aggregation layer switch (1), and the second control aggregation layer switch (2).

6. The hybrid networking architecture according to claim 4, characterized in that: When the industrial sub-network (100) is an industrial ring network, the industrial sub-network (100) comprises a ring network switch (20), and the ring network switch (20) forms a layer 2 redundant link with the first control aggregation layer switch (1) and the second control aggregation layer switch (2), respectively.

7. The hybrid networking architecture according to claim 4, characterized in that: The office information network comprises a first office information network switch (201), wherein the first office information network switch (201) is redundantly connected to the first control aggregation layer switch (1) and the second control aggregation layer switch (2).

8. The hybrid networking architecture according to claim 7, characterized in that: The first office information network switch (201) is respectively connected to the first control aggregation layer switch (1) and the second control aggregation layer switch (2) via the RSTP protocol.

9. The hybrid networking architecture according to claim 7 or 8, characterized in that: The office information network further comprises a second office information network switch, the second office information network switch being connected to the first control aggregation layer switch (1) and one of the first control aggregation layer switch (1).

10. The hybrid networking architecture according to claim 9, characterized in that: The second office information network switch is connected to the first control aggregation layer switch (1) and the second control aggregation layer switch (2) through the LACP protocol.

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