Switching equipment and loopback detecting method thereof
一种交换设备、环回的技术，应用在网络通信领域，能够解决增加产品成本、不能有效抑制环回、没有环回检测功能等问题，达到抑制危害的效果
Active Publication Date: 2011-10-19
NANNING FUGUI PRECISION IND CO LTD
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- Description
- Claims
- Application Information
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Problems solved by technology
[0004] Current switch chips generally do not have a loopback detection function, or this function is not perfect enough, so that some switches or derivatives produced directly using these switch chips cannot effectively suppress loopback
There are also some solutions that need to set up a hardware loopback detection circuit for detection, which will undoubtedly increase the product cost
Method used
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Embodiment Construction
[0026] figure 1 It is a schematic structural diagram of a switching device 10 according to an embodiment of the present invention. The switching device 10 performs auto-negotiation (Auto-Negotiation) with the negotiating partner device 30 via the Ethernet 20 . In this embodiment, the switching device 10 has an auto-negotiation function, and can be any network device that uses a switch chip to implement a switching function, such as an Ethernet switch, an Ethernet router or a gateway with a switching function. The negotiating partner device 30 is a network device in the Ethernet, which also has an auto-negotiation function, such as a switch, a router, a gateway, a personal computer, and the like.
[0027] The switch device 10 includes a processor 12 , a storage medium 14 , a switch chip 16 and a plurality of Ethernet ports 18 . For simplicity and clarity, figure 1 Only four Ethernet ports are shown in . The switch chip 16 is connected to the Ethernet 20 through the Ethernet...
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The invention provides switching equipment, comprising an automatic negotiation module, a changing module and a loopback judging module. The automatic negotiation module sends a link codeword by an Ethernet port to opposite party negotiating equipment so as to carry out automatic negotiation, and records the link codeword sent by the opposite party that practically carries out automatic negotiation with the switching equipment. The changing module changes the link codeword sent to the equipment of the opposite party negotiating party. The automatic negotiation module carries out automatic negotiation again with the opposite party negotiating equipment by the Ethernet port according to the changed link codeword, and records the link codeword of the opposite party that carries out automatic negotiation with the exchanging equipment practically. The loopback judging module judges whether the two link codewords are identical and can judge the loopback occurs at the Ethernet port when the two recorded link codewords are different. The invention also provides a loopback detecting method. In the invention, the switching equipment and the loopback detecting method of the switching equipment can automatically detect whether the loopback occurs at the port, thus effectively inhibiting the harm of the back on the switching equipment.
Description
technical field [0001] The invention relates to network communication, in particular to a switching device and a loopback detection method thereof. Background technique [0002] With the development of networks, Ethernet switches (hereinafter referred to as: switches) are widely used. Switches are not only used in office and home LANs, but also broadband access in the form of Ethernet has become one of the most economical ways of Internet broadband. A switch is composed of a switch chip (or switch chipset) and ancillary circuits, and each chip manufacturer has detailed circuit information. [0003] A loopback is an abnormal condition that a switch can experience that can lead to failure. Under normal application conditions, the port of the switch chip will not loop back, but if the external cable is connected incorrectly or for other special reasons, once the port loops back, it will probably cause extremely serious consequences. There are many common situations where loo...
Claims
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IPC IPC(8): H04L12/04H04L12/26
CPCH04L12/413
Inventor 李俊祺
Owner NANNING FUGUI PRECISION IND CO LTD