A port state synchronization method and device
A port state and state technology, which is applied in digital transmission systems, data exchange networks, electrical components, etc., can solve the problems that the port states of the switching devices at both ends cannot be synchronized, and the PHY chip cannot transparently transmit the port state.
Active Publication Date: 2019-01-08
KYLAND TECH CO LTD
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Problems solved by technology
This is because in this interface mode, the PHY chip of the switching device at the receiving end of the optical fiber cannot transparently transmit the port status to the MAC chip, and the MAC chip cannot notify the sending end of the switching device to send the fault information to the other switching device. device, the switching device at the other end cannot set the port status of the sending end to the link down state, resulting in the inability to synchronize the port status of the switching devices at both ends
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[0037] In order for those skilled in the art to better understand the technical solutions in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described above are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0038] A port state synchronization method provided by an embodiment of the present invention is applied to a first switching device.
[0039] In the industrial Ethernet, the optical module inserted in the first switching device is the first optical module, and the optical module inserted in the second switching d...
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The embodiment of the invention discloses a method and apparatus for port state synchronization. The method is applied to first switching equipment; the first switching equipment is connected with second switching equipment by two fibers; and an output terminal for outputting an LOS signal representing signal loss in a first optical module of the first switching equipment is connected with a complex programmable logic device (CPLD) pin of the first switching equipment. The method comprises: a CPU of first switching equipment obtains an LOS signal of a CPLD pin; when the LOS signal is an abnormal signal, the CPU of the first switching equipment generates fault information; and a sending terminal of the first switching equipment is notified to send the fault information to second switching equipment, so that the second switching equipment sets a port state of the sending terminal to be a link down state. On the basis of the technical scheme provided by the embodiment of the invention, synchronization of port states of the first switching equipment and the second switching equipment can be realized.
Description
technical field [0001] The invention relates to the technical field of industrial Ethernet, and in particular, to a port state synchronization method and device. Background technique [0002] In industrial Ethernet, a switching device at one end and a switching device at the other end are connected by two optical fibers, and the sending end of the switching device at one end corresponds to the receiving end of the switching device at the other end. When the PHY chip in the switching device and the connected MAC chip are designed to be in SGMII (Serial Gigabit Media Independent Interface) interface mode, the port rate can be forcibly converted from gigabit to 100M, but it needs to be Disable the auto-negotiation function. In this interface mode, the port status of the switching devices at both ends is still normal, but only works at the 100M rate. [0003] However, in this interface mode, when a fiber between the switching devices at both ends is pulled out, the switching d...
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IPC IPC(8): H04L12/24
CPCH04L41/0631
Inventor 张敏光
Owner KYLAND TECH CO LTD