RU187641U1 - Ethernet switch - Google Patents

Abstract

The utility model relates to data transmission systems, in particular, to a modular, scalable structure for constructing fast Ethernet network switches that access a common data distribution bus, and to a method of distributing frames on an Ethernet network in a store-and-forward mode (store-and -forward). An Ethernet switch containing a monitoring processor, a switching module connected by a bus to the monitoring processor, N buffers for queuing, the first outputs of which are connected to the corresponding inputs of the switching module, and the second inputs are connected by a bus with a control processor, N ports, the second inputs of which are connected to the corresponding outputs of the switching module, and the outputs - with the first inputs of buffers for queuing, a block of MAC addresses and port numbers connected to the control processor by the bus, the first power supply, a second power supply is additionally introduced , a peripheral controller, the first input / output of which is connected to the input / output of the first and second power supplies, as well as to the first input / output of the control processor, the second input / output is connected to the USB port, and the third input / output is connected to the first input Ami / outputs of N ports.

Description

The utility model relates to data transmission systems, in particular, to a modular, scalable structure for constructing fast Ethernet network switches that access a common data distribution bus, and to a method of distributing frames on an Ethernet network in a store-and-forward mode (store-and -forward).

The closest technical solution is the device described in http://www.fiberman.ru/articles/fast-gigabit-ethernet/ethernet/switch/ - prototype.

This switch contains a monitoring processor, a switching module connected by a bus to the monitoring processor, N buffers for queuing, the first outputs of which are connected to the corresponding inputs of the switching module, and the second inputs are connected by a bus to the monitoring processor, N ports, the first inputs of which are connected to the corresponding outputs control processor, the second inputs are connected to the corresponding outputs of the switching module, and the outputs are connected to the first inputs of the buffers for queuing, a block of MAC addresses and port numbers associated with a control processor; Power Supply.

The purpose of the utility model is to collect and send control signals to greatly simplify programming, control, and tracking peripheral status.

This goal is achieved by the fact that in a device containing a control processor, a switching module connected by a bus to the control processor, N buffers for queuing, the first outputs of which are connected to the corresponding inputs of the switching module, and the second inputs are connected by a bus to the control processor, N ports, the second inputs of which are connected to the corresponding outputs of the switching module, and the outputs - with the first inputs of buffers for queuing, a block of MAC addresses and port numbers connected to the control processor by the bus, the first power supply, a second power supply, a peripheral controller, the first input / output of which is connected to the input / output of the first and second power supplies, as well as to the first input / output of the control processor, the second input / output is connected to the USB port, and the third input / output - with the first inputs / outputs of N ports.

Comparison with the prototype shows that the inventive device is characterized by the presence of new units and their connections between them. Thus, the claimed device meets the criterion of "novelty."

Comparison of the proposed solution with other technical solutions shows that the listed elements used in the blocks are known, however, their introduction in the indicated connection with the other elements leads to the solution of a new problem of collecting and sending control signals, which will greatly simplify programming, control, tracking the status of peripherals (components). This confirms the conformity of the technical solution to the criterion of "significant differences".

In FIG. 1 shows a general block diagram of the proposed device, comprising a control processor 1, a switching module 2, N buffers for queuing FIFO 3, N data input / output ports 4, a table of MAC addresses and port numbers 5, power supplies (BP1 and BP2) 6, peripheral controller 7, ventilation controller 8.

The device operates as follows.

The switch operates at the second link layer of the OSI model. The main purpose of the switch is to ensure network offload by localizing traffic within individual segments.

A key link in the switch is non-blocking architecture, which allows you to establish multiple Ethernet connections between different pairs of ports at the same time, and frames are not lost during the switching process. The traffic itself between the interacting network devices remains localized. Localization is carried out using address tables that establish the connection of each port with the addresses of network devices belonging to the segment of this port.

The switch ports (RJ-45) 4 are usually of the MDI-X type. Modern switches have many additional features, including: filtering by MAC addresses, building virtual networks, flow control function, auto-configuration of 10Base-T / 100Base-TX port, support for duplex transmission mode.

The Ethernet switch today includes many components operating on the SPI bus (serial peripheral interface bus), I ² C (inter-intergrated circuit), PMBus (Power Management Bus) and others. These components include power and ventilation controllers, temperature sensors, SFP interfaces, DC-DC voltage level converters, random-access and read-only memory modules (RAM and ROM, respectively) and many others.

Today, the control over the operation of each element is carried out separately or not at all (as is the case with DC-DC converters). In the switch, as in many other devices, the control of one element directly depends on the information taken from another. For example, fans built into the case should increase the speed of rotation of the blades with increasing temperature at the sensors.

In our case, this is the addition of a peripheral controller 7, on which most of the buses used in the switch will be connected, as well as a separate ventilation controller 8. A single point for collecting and sending control signals will greatly simplify programming, control, and monitoring the status of peripherals (components). It will be possible to control DC-DC voltage converters depending on, for example, temperature (as we know, the characteristics of elements change depending on temperature).

Thus, the considered technical solution allows the collection and sending of control signals to significantly simplify the programming, management and tracking of peripheral status.

Claims (1)

An Ethernet switch containing a monitoring processor, a switching module connected by a bus to the monitoring processor, N buffers for queuing, the first outputs of which are connected to the corresponding inputs of the switching module, and the second inputs are connected by a bus to the monitoring processor, N ports, the second inputs of which are connected to the corresponding the outputs of the switching module, and the outputs - with the first inputs of buffers for queuing, a block of MAC addresses and port numbers connected to the control processor by the bus, the first power supply is additionally introduced a second power supply, a peripheral controller, the first input / output of which is connected to the input / output of the first and second power supplies, as well as to the first input / output of the control processor, the second input / output is connected to the USB port, and the third input / output is connected to the first inputs outputs of N ports.

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