CN102984094A - 24-port MDU - Google Patents
24-port MDU Download PDFInfo
- Publication number
- CN102984094A CN102984094A CN2012105297072A CN201210529707A CN102984094A CN 102984094 A CN102984094 A CN 102984094A CN 2012105297072 A CN2012105297072 A CN 2012105297072A CN 201210529707 A CN201210529707 A CN 201210529707A CN 102984094 A CN102984094 A CN 102984094A
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- output port
- switch
- exchanger
- processing unit
- central processing
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Abstract
The invention discloses a 24-port MDU (management data unit) which comprises an internal memory, a central processing unit, a permanent memory, an MII (media independent interface), an SPI (serial peripheral interface), an exchanger, a medium independent interface, an MAC (media access controller), conversion equipment, an optical fiber component, a transmission medium, a 24PORT exchanger, an LED (light-emitting diode) lamp, a 220V alternating-current electromagnetic valve coil, an alternating current and direct current convertor, a direct current transformer, a 1.2V output port, a 2.5V output port, a 3.3V output port and a circuit board, wherein the central processing unit is connected with the internal memory and the permanent memory; the MII and the SPI are connected between the central processing unit and the exchanger; the medium independent interface is connected between the exchanger and the MAC; the conversion equipment is connected between the MAC and the optical fiber component; and the transmission medium is connected between the exchanger and the 24PORT exchanger. The 24-port MDU is simple in structure and convenient to use.
Description
Technical field
The present invention relates to the multi-link aggregated device, be specially 24 mouthfuls of MDU.
Background technology
MDU is mainly used between the network backbone switch, and the networks converge layer switch is linked into the connection of network backbone switch (core switch).The MDU(multi-link aggregated) can effectively avoid Single Point of Faliure to cause the generation that network interrupts situation.MDU allows to set up two or more physical link between two switching equipment, it can bind a virtual transmission link with all physical connections between two switching equipment, and the exchanges data between the switch is finished by this virtual transmission link.All physical links of formation virtual transmission link are redundancy backup each other.When having one or more in the physical link that consists of the virtual transmission link because port or transmission medium when breaking down, data transfer is finished by remaining effective physical link.Multi-link aggregated can avoid Single Point of Faliure to cause the generation that network interrupts situation effectively.MDU allows to set up two or more physical link between two switching equipment, it can bind a virtual transmission link with all physical connections between two switching equipment, and the exchanges data between the switch is finished by this virtual transmission link.All physical links of formation virtual transmission link are redundancy backup each other.When having one or more in the physical link that consists of the virtual transmission link because port or transmission medium when breaking down, data transfer is finished by remaining effective physical link.Jointly participate in data transfer owing to consist of all physical links of virtual transmission link, the bandwidth of virtual transmission link can be multiplied, thereby brings the lifting of network transmission performance.
Summary of the invention
Technical problem solved by the invention is to provide 24 mouthfuls of MDU, to solve the shortcoming in the above-mentioned background technology.
Technical problem solved by the invention realizes by the following technical solutions:
24 mouthfuls of MDU, comprise built-in storage, central processing unit, permanent memory, MII media independent mouth interface, the SPI interface, switch, Media Independent Interface, mac controller, conversion equipment, optical fiber component, transmission medium, the 24PORT switch, the LED lamp, the alternating current 220V electromagnetic valve coil, AC/DC changeover switch, commutator transformer, 1.2V output port, 2.5V output port, 3.3V output port and wiring board, be connected with built-in storage on the described central processing unit, permanent memory, be connected with MII media independent mouth interface between described central processing unit and the switch, the SPI interface, be connected with Media Independent Interface between described switch and the mac controller, be connected with conversion equipment between described mac controller and the optical fiber component, be connected with transmission medium between described switch and the 24PORT switch, described alternating current 220V electromagnetic valve coil, AC/DC changeover switch, commutator transformer connects successively, be connected with the 1.2V output port on the described commutator transformer, 2.5V output port, 3.3V output port, described LED lamp is installed in the circuit board.
Beneficial effect
The present invention is simple in structure, and is easy to use.
Description of drawings
Fig. 1 is structure principle chart of the present invention.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
Referring to Fig. 1, the structure principle chart of 24 mouthfuls of MDU, 24 mouthfuls of MDU, comprise built-in storage 1, central processing unit 2, permanent memory 3, MII media independent mouth interface 4, SPI interface 5, switch 6, Media Independent Interface 7, mac controller 8, conversion equipment 9, optical fiber component 10, transmission medium 11,24PORT switch 12, LED lamp 13, alternating current 220V electromagnetic valve coil 14, AC/DC changeover switch 15, commutator transformer 16,1.2V output port 17,2.5V output port 18,3.3V output port 19 and wiring board 20, be connected with built-in storage 1 on the described central processing unit 2, permanent memory 3, be connected with MII media independent mouth interface 4 between described central processing unit 2 and the switch 6, SPI interface 5, be connected with Media Independent Interface 7 between described switch 6 and the mac controller 8, be connected with conversion equipment 9 between described mac controller 8 and the optical fiber component 10, be connected with transmission medium 11 between described switch 6 and the 24PORT switch 12, described alternating current 220V electromagnetic valve coil 14, AC/DC changeover switch 15, commutator transformer 16 connects successively, be connected with 1.2V output port 17 on the described commutator transformer 16,2.5V output port 18,3.3V output port 19, described LED lamp 13 is installed on the wiring board 20.
More than show and described basic principle of the present invention and principal character and advantage of the present invention; the technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications; these changes and improvements all fall in the claimed scope of the invention, and the claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (2)
1.24 mouthful MDU, comprise built-in storage, central processing unit, permanent memory, MII media independent mouth interface, the SPI interface, switch, Media Independent Interface, mac controller, conversion equipment, optical fiber component, transmission medium, the 24PORT switch, the LED lamp, the alternating current 220V electromagnetic valve coil, AC/DC changeover switch, commutator transformer, 1.2V output port, 2.5V output port, 3.3V output port and wiring board, it is characterized in that, be connected with built-in storage on the described central processing unit, permanent memory, be connected with MII media independent mouth interface between described central processing unit and the switch, the SPI interface, be connected with Media Independent Interface between described switch and the mac controller, be connected with conversion equipment between described mac controller and the optical fiber component, be connected with transmission medium between described switch and the 24PORT switch, described alternating current 220V electromagnetic valve coil, AC/DC changeover switch, commutator transformer connects successively.
2. 24 mouthfuls of MDU according to claim 1 is characterized in that, are connected with the 1.2V output port on the described commutator transformer, 2.5V output port, 3.3V output port, and described LED lamp is installed in the circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105297072A CN102984094A (en) | 2012-12-11 | 2012-12-11 | 24-port MDU |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105297072A CN102984094A (en) | 2012-12-11 | 2012-12-11 | 24-port MDU |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102984094A true CN102984094A (en) | 2013-03-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105297072A Pending CN102984094A (en) | 2012-12-11 | 2012-12-11 | 24-port MDU |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102984094A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101188502A (en) * | 2007-12-06 | 2008-05-28 | 上海大学 | Ethernet passive optical network transfer unit with telecom E1 interface |
| CN101964738A (en) * | 2010-08-14 | 2011-02-02 | 东方电气集团东方汽轮机有限公司 | Communication system for wind power station |
-
2012
- 2012-12-11 CN CN2012105297072A patent/CN102984094A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101188502A (en) * | 2007-12-06 | 2008-05-28 | 上海大学 | Ethernet passive optical network transfer unit with telecom E1 interface |
| CN101964738A (en) * | 2010-08-14 | 2011-02-02 | 东方电气集团东方汽轮机有限公司 | Communication system for wind power station |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130320 |