CN217656634U - Distributed KVM node device capable of automatically switching cascade and direct connection modes - Google Patents
Distributed KVM node device capable of automatically switching cascade and direct connection modes Download PDFInfo
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Abstract
The utility model discloses a but distributed KVM node means of automatic switch-over cascade, direct connection mode. The distributed KVM node comprises a plurality of distributed KVM node devices, wherein each node device comprises a video processing module, an audio processing module, a mouse key processing module, a USB transparent transmission processing module, a network interface module, a network packet switching module and a network packet switching rule generating module. The utility model discloses a device can support the KVM node equipment hand in hand to cascade and directly link the deployment mode of switch, and automatic identification hookup mode when deploying need not artifical setting, has increased the flexibility that distributed KVM system disposed, reduces the cost of deploying. Meanwhile, the transmission of the audio and video, the mouse keys and the USB transparent transmission data of the utility model is based on the standard Ethernet message exchange, has the advantages of easy realization and low cost.
Description
Technical Field
The utility model relates to a KVM, cascade deployment and distributed technology field, in particular to but distributed KVM node means of automatic switch-over cascade, direct connection mode.
Background
KVM stands for Keyboard (Keyboard), display (Video) and Mouse (Mouse), i.e. a group of Keyboard, display or Mouse is used to control multiple devices, and plays an important role in remote scheduling and monitoring.
In a distributed KVM system developed in recent years, a network is used to transmit video, audio, mouse and USB data, so as to implement control of a remote host. The typical distributed KVM node is directly connected to the switch, which has several disadvantages:
a) Each node fixedly occupies 1-2 switch interfaces, the bandwidth utilization rate is not high, and when the nodes are more, the switch cost is higher;
b) The flexibility is not sufficient, the deployment is complex, increase maintenance cost: each node machine is directly connected with the switch through a network cable or an optical fiber, so that the deployed equipment cannot be fully utilized to jump nearby, the use amount of wires is increased, and the construction difficulty is increased;
the cascade technology mentioned in the prior art, which is based on a proprietary protocol and customized switching matrix equipment, cannot utilize a general network switch, and greatly increases the cost of implementation and deployment.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the present invention provides a distributed KVM node device capable of automatically switching between cascade mode and direct mode. The utility model is suitable for a need the occasion of long-range host computer control, can effectively reduce the cost of development cost and on-the-spot network equipment and wiring, compromise economic nature and flexibility. The KVM node equipment, no matter the host end equipment or the seat end equipment, can flexibly select to be directly connected with the switch or be connected to the network in a cascading mode through another KVM node equipment, does not need manual configuration, and reduces the deployment cost and the switch cost by providing a direct connection or cascading deployment mode. And the adopted protocol and the switching equipment are standard Ethernet protocols, so that the development cost and the raw material model selection cost are reduced.
The technical scheme of the utility model specifically introduces as follows.
A distributed KVM node device capable of automatically switching cascade and direct connection modes comprises a plurality of distributed KVM nodes
A node device;
each distributed KVM node device comprises a video processing module, an audio processing module, a mouse key processing module, a network interface module, a network packet switching module and a network packet switching rule generating module; the audio processing module, the mouse key processing module and the network packet switching module are connected in a bidirectional mode; the number of the network interface modules is more than 2, the input end of the network interface module is connected with the network packet switching module, and the output end of the network packet switching rule generating module is connected with the input end of the network packet switching module.
In the utility model, the distributed KVM node equipment also comprises a USB transparent transmission processing module, the USB transparent transmission processing module is connected with the network packet switching module in a bidirectional way.
The utility model discloses in, still include the network switch, have a network interface module and network switch in the distributed KVM node equipment at least in all distributed KVM node equipment to link to each other.
The utility model discloses in, link to each other through net twine or optic fibre between network interface module and the network switch.
The utility model discloses in, the network switch that network interface module connects is general ethernet switch.
Compared with the prior art, the method has the advantages that, the beneficial effects of the utility model reside in that: the system is suitable for occasions needing remote host control, can effectively reduce development cost and the cost of field network equipment and wiring, and has both economy and flexibility. The KVM node equipment, whether the host side equipment or the seat side equipment, the KVM switch can be directly connected with a switch or cascaded to the network through another KVM node device without manual configuration; by providing a direct connection or cascade deployment mode, the deployment cost is reduced, and the cost of the switch is reduced. And the adopted protocol and the switching equipment are standard Ethernet protocols, so that the development cost and the raw material model selection cost are reduced.
Drawings
Fig. 1 is a block diagram of a distributed KVM node apparatus capable of automatically switching between cascade and direct connection modes according to embodiment 1.
Fig. 2 is a diagram illustrating a cascading manner of a distributed KVM node apparatus capable of automatically switching between a cascading mode and a direct mode in embodiment 1.
Fig. 3 is a block diagram of a distributed KVM node apparatus capable of automatically switching between cascade and direct modes according to embodiment 1.
Fig. 4 is a diagram of the HUB mode of the network packet switching rule generation module in embodiment 1 and embodiment 2.
Fig. 5 is a block diagram of a distributed KVM node apparatus capable of automatically switching between cascade and direct mode according to embodiment 2.
Fig. 6 is a diagram illustrating a mixture of cascade and direct connection of a distributed KVM node apparatus capable of automatically switching between cascade and direct connection modes according to embodiment 2.
Reference numbers in the figures: the system comprises a 1-video processing module, a 2-audio processing module, a 3-mouse key processing module, a 4-USB transparent transmission processing module, a 5-network interface module, a 6-network packet switching module and a 7-network packet switching rule generating module.
Detailed Description
In the following, reference is made to the accompanying drawings and examples to this utility the novel technical scheme is introduced in detail.
Example 1
Fig. 1 is a block diagram of a distributed KVM node apparatus capable of automatically switching between a cascade mode and a direct mode in embodiment 1, which includes a plurality of distributed KVM node devices, and the distributed KVM node devices are deployed in the cascade mode or the direct mode; each distributed KVM node device comprises a video processing module 1, an audio processing module 2, a mouse key processing module 3, a USB transparent transmission processing module 4, a network interface module 5, a network packet switching module 6 and a network packet switching rule generating module 7.
The video processing module 1 is connected with the network packet switching module 6, the audio processing module 2 is connected with the network packet switching module 6, the mouse key processing module 3 is connected with the network packet switching module 6, the USB transparent transmission processing module 4 is connected with the network packet switching module 6, the network interface module 5 is connected with the network packet switching module 6, the network packet switching module 6 is connected with the video processing module 1, the audio processing module 2, the mouse key processing module 3, the USB transparent transmission processing module 4, the network interface module 5 and the network packet switching rule generating module 7, and the network packet switching rule generating module 7 is connected with the network packet switching module 6. The structure and function of the components of the device in the embodiments are as follows: a video processing module 1 for collecting/encoding/packaging video signals, and inputting the video signals from the outside of the node device
The standard network message is formed after collection and coding and is sent to the network packet switching module 6; can be implemented using a S2 ultra high definition video encoder for kilo-vision electronics; the audio processing module 2 is used for collecting/encoding/packaging and unpacking/decoding/outputting audio signals; collecting and coding audio signals input from the outside of the node device to form a standard network message, and sending the standard network message to a network packet switching module 6; or receiving the network message from the network packet switching module 6, decoding the audio data after unpacking, and then outputting the audio data to the outside of the node device for playing; the input version or the output version of the Dante AVIO analog adapter of the Audinate company can be selected to be realized;
the mouse key processing module 3 is used for collecting/packaging and unpacking/outputting mouse key signals; mouse with external input of node device
The key signal is collected and encoded to form a standard network message, and the standard network message is sent to a network packet switching module 6; meanwhile, the network packet switching module 6 receives the network message, decodes the mouse key data after unpacking, and then outputs the mouse key data to the outside of the node device; DS-USB1201 USB signal network extenders of German and Shang science and technology can be selected for realization;
the USB transparent transmission processing module 4 is used for collecting/packaging and unpacking/outputting USB data; externally transmitting node device
The input USB signals are collected and encoded to form a standard network message, and the standard network message is sent to the network packet switching module 6; meanwhile, the network packet switching module 6 receives the network message, decodes the USB data after unpacking, and then outputs the USB data to a USB interface of external equipment of the node device; the method can be realized by selecting a DS-USB1201 USB signal network extender of Germany science and technology;
a network interface module 5, configured to receive and transmit a network message from an internet access or an optical access; the message sent by the network packet switching module 6 is forwarded to the network port or the optical port; or the network message received by the network port or the optical port is forwarded to the network packet switching module 6; the module can adopt RTL8211E of Realtek Ruyi corporation to realize the transceiving of network packets.
The network packet switching module 6 is used for switching network messages of each module; exchanging messages of the video processing module 1, the audio processing module 2, the mouse key processing module 3, the USB transparent transmission processing module 4 and the network interface module 5 according to rules configured by the network packet exchange rule generating module 7; the module can realize the regular forwarding of the network message by a 56504 Ethernet switching chip of Broadcom company.
A network packet switching rule generating module 7 for generating the switching rule and issuing the rule to the network packet switching module
The distributed KVM node device described in this embodiment may be deployed in the following two ways:
i) A cascade mode: as shown in fig. 2, the distributed KVM node apparatus 1 is connected to the switch and the distributed KVM node apparatus 2; the distributed KVM node equipment N is connected with distributed KVM node equipment N +1 and distributed KVM node equipment N-1, wherein N > N > =2; the distributed KVM node equipment N is connected with the distributed KVM node equipment N-1;
ii) direct connection: as a specific example of the cascade connection, as shown in fig. 3, the distributed KVM node 1 is connected to a switch;
the embodiment is suitable for occasions needing remote host control, can effectively reduce development cost and the cost of field network equipment and wiring, and has both economy and flexibility. The KVM node equipment, no matter the host end equipment or the seat end equipment, can flexibly select to be directly connected with the switch or be connected with the network through the cascade of another KVM node equipment, does not need manual configuration, and reduces the deployment cost and the switch cost by providing a direct connection or cascade deployment mode. And the adopted protocol and the switching equipment are standard Ethernet protocols, so that the development cost and the raw material model selection cost are reduced.
Example 2
Fig. 5 is a block diagram of a distributed KVM node apparatus capable of automatically switching between cascade and direct connection modes in embodiment 1, and includes a video processing module 1, an audio processing module 2, a mouse key processing module 3, a USB transparent transmission processing module 4, a network interface module 5, a network packet switching module 6, and a network packet switching rule generating module 7.
The video processing module 1 is connected with the network packet switching module 6, the audio processing module 2 is connected with the network packet switching module 6, the mouse key processing module 3 is connected with the network packet switching module 6, the USB transparent transmission processing module 4 is connected with the network packet switching module 6, the network interface module 5 is connected with the network packet switching module 6, the network packet switching module 6 is connected with the video processing module 1, the audio processing module 2, the mouse key processing module 3, the USB transparent transmission processing module 4, the network interface module 5 and the network packet switching rule generating module 7, and the network packet switching rule generating module 7 is connected with the network packet switching module 6.
The structure and function of the components of the device in the examples are as follows:
a video processing module 1 for unpacking/decoding/outputting video signals; accepts network messages from the network packet switching module 6,
decoding the video data after unpacking, and then outputting the decoded video data to the external part of the node device for displaying; the module can select an HI3536 chip of a Haesi semiconductor to realize the unpacking, decoding and HDMI output of video streaming media;
the audio processing module 2 is used for collecting/encoding/packaging and unpacking/decoding/outputting audio signals; install the node out of the device
The audio signals input by the part are collected and coded to form a standard network message, and the standard network message is sent to a network packet switching module 6; or receiving the network message from the network packet switching module 6, decoding the audio data after unpacking, and then outputting the audio data to the outside of the node device for playing; the module can adopt HI3536 chip of Haesi semiconductor to realize the package/unpacking, coding/decoding and acquisition/output of audio streaming media;
the mouse key processing module 3 is connected with a mouse keyboard and used for processing acquisition/package and unpacking/output of mouse key signals; collecting and coding mouse key signals input from the outside of the node device to form a standard network message, and sending the standard network message to the network packet switching module 6; meanwhile, the network packet switching module 6 receives the network message, decodes the audio data after unpacking, and then outputs the audio data to the outside of the node device for playing; the module can adopt a network unloading processor of an AX68002 2 port USB KVM multi-computer switcher single chip of the WeChat electronics and a W7500 single chip of the WIZNET company to realize the mutual conversion between a mouse key USB port and a network packet;
the USB transparent transmission processing module 4 is connected with the USB equipment and is used for collecting/packaging and unpacking/outputting USB data; USB signals input from the outside of the node device are collected and encoded to form a standard network message, and the standard network message is sent to a network packet switching module 6; meanwhile, the network packet switching module 6 receives the network message, decodes the USB data after unpacking, and then outputs the USB data to a USB interface of external equipment of the node device; the module can adopt LAN7801 USB of Microchip company to change the chip of Ethernet to realize USB apparatus (such as U disk) and the mutual conversion of the network packet;
a network interface module 5, configured to receive and transmit a network message from an internet access or an optical access; the message sent by the network packet switching module 6 is forwarded to the network port or the optical port; or the network message received by the network port or the optical port is forwarded to the network packet switching module 6; the module can adopt RTL8211E of Realtek Yi company to realize the receiving and sending of network packets;
the network packet switching module 6 is used for switching network messages of each module; exchanging messages of the video processing module 1, the audio processing module 2, the mouse key processing module 3, the USB transparent transmission processing module 4 and the network interface module 5 according to rules configured by the network packet exchange rule generating module 7; the module can realize the regular forwarding of the network message by a 56504 Ethernet exchange chip of Broadcom company;
the network packet switching rule generating module 7 is used for generating switching rules and sending the rules to the network packet switching module 6; the exchange rule is as follows: the HUB mode is configured, wherein one of the network interface modules 5 is an uplink port, and the others are downlink ports, and the forwarding mode of the HUB mode is shown in fig. 4. The module may use an STM32H723 microcontroller chip from Italian semiconductor corporation to implement the generation of the rules.
Fig. 6 is a diagram illustrating a mixture of cascade and direct connection of a distributed KVM node apparatus capable of automatically switching between cascade and direct connection modes according to embodiment 2.
In the above, the distributed KVM node apparatus capable of automatically switching between the cascade mode and the direct mode provided by the present invention, through the automatic cascade state detection, and obtaining the cascade direction of each port of the node, thereby generating a corresponding data exchange rule to realize the self-adaptive switching of the cascade and direct connection deployment modes. The utility model has the advantages that:
support the deployment mode of hand-in-hand cascade and direct connection switches, and the connection mode is automatically identified when the system is deployed, manual setting is not needed, the flexibility of the distributed KVM system is improved, and the labor cost of the deployment is reduced; the cascade mode improves the utilization rate of the switch ports and can reduce the cost of the switch in the distributed system.
And simultaneously, the utility model relates to an audio frequency and video, mouse key, USB pass through transmission mode of data all are based on standard ethernet message switching mode, have the advantage that realizes easy, with low costs.
It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (5)
1. A distributed KVM node device capable of automatically switching cascade and direct connection modes is characterized in that: it comprises a plurality of parts
A distributed KVM node device;
each distributed KVM node device comprises a video processing module, an audio processing module, a mouse key processing module, a network interface module, a network packet switching module and a network packet switching rule generating module; the audio processing module, the mouse key processing module and the network packet switching module are connected in a bidirectional way; the number of the network interface modules is more than 2, the input end of the network interface module is connected with the network packet switching module, and the output end of the network packet switching rule generating module is connected with the input end of the network packet switching module.
2. The distributed KVM node apparatus capable of automatically switching between cascaded and direct mode of claim 1, wherein: the distributed KVM node equipment also comprises a USB transparent transmission processing module, and the USB transparent transmission processing module is in bidirectional connection with the network packet switching module.
3. The distributed KVM node arrangement that automatically switches between cascaded, direct mode of claim 1, further comprising a network switch, wherein at least one of the distributed KVM node devices is connected to a network interface module of at least one of the distributed KVM node devices.
4. The automatically switchable cascaded, inline mode distributed KVM node apparatus of claim 3, wherein the network interface module is connected to the network switch via a network cable or an optical fiber.
5. The automatically switchable cascaded, inline mode distributed KVM node apparatus according to claim 3, wherein the network switch to which the network interface module is connected is a general purpose Ethernet switch.
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