Method for high-speed link auto negotiation and single boards
A high-speed link, self-negotiation technology, applied in the direction of multiple use of transmission paths, digital transmission systems, electrical components, etc., can solve the problem of inflexible switching of the rate, and achieve good compatibility and scalability
Active Publication Date: 2011-10-12
HUAWEI TECH CO LTD
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Problems solved by technology
[0007] Rate configuration depends on specific hardware, or requires manual configuration to complete rate auto-negotiation, and the rate cannot be switched flexibly
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[0025] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0026] see figure 1 , an embodiment of the present invention provides a method for high-speed link auto-negotiation, including:
[0027] 101: The port rate of the first board is set to a common rate supported by both the first board and the second board, and the port rate of the second board is the common rate;
[0028] 102: The first board sends the first auto-negotiation message to the second board according to the public rate, and the first auto-negotiation message carries the rate supported by the first board, so that the second board sends the rate according to the rate supported by the first board. and the speed supported by the second board, determine the highest speed supported by both the first board and the second board, and...
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The invention discloses a method for high-speed link auto negotiation and single boards, belonging to the field of high-speed Ethernet. The method comprises that: a first and second single boards set a port rate supported by both the first and second single boards; the first single board sends a first auto negotiation message to the second single board according to a common rate, carrying the rate supported by the first single board, thus to make the second single board determine the maximum rate supported by both the first and second single boards based on the rates supported by the first and second single boards and set the port rate as the maximum rate; the first single board receives a second auto negotiation message sent by the second single board according to the common rate, carrying the rate supported by the second single board; and the first single board determines the maximum rate supported by the first and second single boards according to the rates supported by the first single board and the second single board, setting port rate as the maximum rate. The invention realizes auto negotiation mechanism via a message, without support from specific hardware. Meanwhile, the invention allows dynamic rate switching.
Description
technical field [0001] The invention relates to the field of high-speed Ethernet, in particular to a high-speed link self-negotiation method and a single board. Background technique [0002] With the rapid development of Ethernet technology, high-speed Ethernet has been widely used, and the port rate of Ethernet is also increasing. However, the formulation of Ethernet industry standards often lags behind the development of technology. When some high-speed Ethernet is already in general use, the high-speed auto-negotiation standard has not yet been formulated, which makes it difficult for the two ends of the communication to connect. [0003] In the case that the high-rate auto-negotiation standard has not been formulated, the rate configuration is generally performed in an out-of-band channel configuration mode or a fixed configuration mode in the prior art. [0004] The out-of-band channel configuration mode refers to configuring the service channel through the maintenance...
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IPC IPC(8): H04L12/56H04L49/111
CPCH04L12/413H04L49/3054H04L12/40013H04L5/1446H04L41/145
Inventor 严立童运民黄立刚陈小勤
Owner HUAWEI TECH CO LTD