CN202949446U - High-reliability highly-real-time ring network topology structure suitable for remote-control system - Google Patents

Abstract

The utility model discloses a high-reliability and high-real-time ring network topology structure suitable for remote control systems. The front end and the back end are respectively equipped with two switches, and the four switches form a ring structure. The mode fiber is connected to two back-end switches, and the two front-end switches and the two back-end switches are connected through multiple multi-mode fibers; the network terminal equipment connected to the switch is connected to the corresponding switch through six types of shielded twisted pair to connect. The utility model greatly improves the reliability of the network system, builds a unified platform, integrates network communication resources, and reduces the development cost.

Description

A Highly Reliable and Real-Time Ring Network Topology Structure Suitable for Remote Control System

technical field

The utility model belongs to the technical field of electronic computer communication, and in particular relates to a ring network topology structure with high reliability and high real-time performance suitable for remote control systems.

Background technique

The traditional remote control network system is not an independent system, but each sub-system has its own remote control network subsystem to complete the front-end remote command scheduling and data transmission. Most of the network topology adopts the direct connection mode of a single switch, resulting in a single point of failure and low reliability.

In order to solve the problem of low reliability, some remote control schemes have adopted redundant backup network systems. However, other communication links or cross-connections still need to be built for communication between subsystems, resulting in complex network topology. At the same time, due to their respective redundant backups, the resource utilization rate is insufficient and the cost is too high.

Contents of the invention

The purpose of the utility model is to overcome the defects of the prior art, provide a highly reliable real-time network communication topology suitable for remote control, and solve the technical problems of low reliability and high cost of network communication in traditional remote control systems.

In order to achieve the above object, the technical solution of the present utility model is: a highly reliable and high real-time ring network topology suitable for remote control systems, as shown in Figure 2, the front end and the rear end are each equipped with two switches, four switches form a ring structure. The two front-end switches are connected to the two back-end switches through multiple single-mode optical fibers, and the two front-end switches and the two back-end switches are connected through multiple multi-mode optical fibers; the network terminal equipment connected to the switch is connected through six Connect the shielded twisted pair to the corresponding switch.

The high-reliability and high-real-time ring network topology structure configures the RSTP protocol with the back-end switch as the root node, and configures the HSRP hot backup routing protocol between the two back-end switches to form a redundant backup of the main and auxiliary switches.

The different systems connected to the front-end and back-end switches are divided into independent VLANs, and RSTP is configured according to the respective VLANs.

Each network terminal device connected to the switch is equipped with 2 network cards, and the 2 network cards are respectively connected to different switches in SFT mode.

The plurality of optical fibers connected between the front-end and front-end main switches, between two front-end switches, and between two back-end switches are configured as Gigabit Ethernet channel GEC.

The back-end switch can be connected to another back-end switch through multiple six-type shielded twisted-pair wires, and is configured as a Gigabit Ethernet channel GEC at the same time.

Compared with the prior art, the utility model has the following beneficial effects: (1) Compared with the direct connection mode, this topology adopts multiple redundant backup modes to greatly improve the reliability of the network system; (2) Compared with the single redundant backup mode Compared with other methods, this topology builds a unified platform, integrates network communication resources, and reduces development costs.

Description of drawings

Figure 1 is a topology diagram of a traditional direct-connected remote control network system.

Fig. 2 is a schematic diagram of a high-reliability and high-real-time ring network topology suitable for remote control systems.

FIG. 3 is a schematic diagram of a topology in which the backend switch C is used as the root switch of VLAN1.

FIG. 4 is a schematic diagram of a topology in which the backend switch D is used as the root switch of VLAN2.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

The topology of the traditional direct-connected remote control network system is shown in Figure 1. A single switch is used for direct connection, resulting in a single point of failure and low reliability.

A high-reliability and high-real-time ring network topology suitable for remote control systems. As shown in Figure 2, two switches are configured at the front end and two switches at the back end, and four switches form a ring structure. The front-end switch A and the front-end switch B are respectively connected to the back-end switch C and the back-end switch D through multiple single-mode optical fibers. Connection; the network terminal equipment connected to the switch is connected to the corresponding switch through six types of shielded twisted pair. The above-mentioned network topology is configured with the RSTP protocol as the root node on the back-end switch, that is, the rapid spanning tree protocol; at the same time, the HSRP hot backup routing protocol is configured between the two back-end switches to form a redundant backup of the primary and secondary switches.

In order to reduce the possibility of key information collision of different systems, the information transmission channels of different subsystems are isolated as much as possible, so different systems are divided into independent VLANs (virtual subnets), and RSTP can be configured according to their respective VLANs, as shown in the figure 3. As shown in Figure 4: the back-end switch C is the root switch of VLAN1, set to the default priority; the back-end switch D is the backup root switch of VLAN1, set to the second highest priority, and the back-end switch C and the back-end The HSRP hot backup routing protocol is configured between the end switches D. When the root switch fails, the second-priority switch switches to the root switch state and generates a new topology tree structure to ensure the continuation of network communication; the opposite is used for VLAN2 Configuration method. This ensures that the data transmission of VLAN1 and VLAN2 passes through different links under normal conditions, so as to realize the independence of communication, as shown in FIG. 3 and FIG. 4 .

Considering the special requirements of the network communication system for reliability, it is necessary to ensure that each data channel is redundant to avoid single point of failure. Therefore, in this network design, the dual-server network card bundling technology (TEAM) is used, that is, each network terminal device connected to the switch is equipped with 2 network cards, and the 2 network cards are respectively connected to different switches, using the SFT (Switch Fault Tolerance) mode. When a network card fails or the switch or line connected to it fails, SFT technology can automatically switch the communication to another network card.

To improve the reliability of the network communication system, Gigabit Ethernet channel GEC is configured between the front-end and front-end main switches, between two front-end switches, and between two back-end switches. GEC refers to Gigabit Ethernet Channel, which means that two or more physical links are bundled into one logical line for use, and this process is transparent to users. The use of GEC has the following advantages: (1) Provide backup on the line for the interconnected equipment, provide high availability of the line, the failover time is very short, and it is transparent to the user; (2) On the two physical lines The data flow is load-balanced, and the flow is randomly distributed to each physical line, thereby increasing the line bandwidth.

The back-end switch E is connected to the switch D through multiple six-type shielded twisted-pair cables to implement a VLAN for browsing; the purpose of using a single switch is to limit the browsing information to its VLAN without affecting the front-end and back-end communication.

The above embodiments of the utility model have been described in detail, the above-mentioned implementation is only the optimal embodiment of the utility model, but the utility model is not limited to the above-mentioned embodiment, within the scope of knowledge of those of ordinary skill in the art , various changes can also be made without departing from the purpose of the utility model.

Claims (6)

1. highly reliable high real-time loop network topological structure that is applicable to remote power feeding system, it is characterized in that front-end and back-end respectively configure two switches, four exchange mechanisms circularize structure, the two front end switch of platform are connected to end switch after two platforms by many monomode fibers respectively, connect by many multimode fibers between end switch between the two front end switch of platform, after two platforms; The network-termination device that connects with switch is connected with corresponding switch by six type shielding twisted-pair feeders.

2. a kind of highly reliable high real-time loop network topological structure that is applicable to remote power feeding system as claimed in claim 1, after it is characterized in that, end switch is root node configuration RSTP agreement, configuring the HSRP HSRP after two platforms between end switch, form major-minor switch redundancy backup simultaneously.

3. a kind of highly reliable high real-time loop network topological structure that is applicable to remote power feeding system as claimed in claim 2, is characterized in that the different system that is connected with the front and back end switch is divided in independently VLAN the inside, according to VLAN configuration RSTP separately.

4. a kind of highly reliable high real-time loop network topological structure that is applicable to remote power feeding system as claimed in claim 1, it is characterized in that every the network-termination device that is connected with switch all installs 2 network interface cards, 2 network interface cards adopt the SFT patterns to connect respectively different switches.

5. a kind of highly reliable high real-time loop network topological structure that is applicable to remote power feeding system as claimed in claim 1, it is characterized in that between the host exchange of front and back end, between the two front end switch of platform, many optic fiber configureings connecting between end switch after two platforms are gigabit Ethernet passage GEC.

6. a kind of highly reliable high real-time loop network topological structure that is applicable to remote power feeding system as claimed in claim 1, it is characterized in that rear end platform switch can be connected with another rear end platform switch by many six type shielding twisted-pair feeders, is configured to gigabit Ethernet passage GEC simultaneously.

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