Optical-fiber interface speed self-adapting method and optical-fiber network device

Abstract

The invention discloses an optical-fiber interface speed self-adapting method which includes the steps: using an initial adaptive speed to set an adaptive speed of a physical layer chip, periodically detecting link connection state of the physical layer chip, selecting a new adaptive speed different from the current adaptive speed from a plurality of candidate adaptive speeds and using the new adaptive speed to set the adaptive speed of the physical layer chip when the link connection state detected is not connected. The optical-fiber interface speed self-adapting method is capable of achieving self-adapting of an optical-fiber interface speed, accordingly enhancing application flexibility of an optical-fiber network device, and lowering hardware cost of the optical-fiber network device. The invention further discloses the optical-fiber network device.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method for adapting the rate of an optical port and an optical network device. Background technique [0002] With the continuous development of optical networks, the market demand for optical ports is gradually increasing. For example, as one of the application scenarios of optical network products, point-to-point P2P (Point to Point) access has the characteristics of high bandwidth, high reliability, high security, and is suitable for distributed deployment. In recent years, the demand for P2P equipment is on the rise . In addition, optical ports are also widely used in OLT (Optical Line Terminal, Optical Line Terminal), switches and other fields. [0003] The optical port generally adopts a hardware design scheme in which a physical layer chip (PHY chip) is connected to an optical module. Among them, the optical module is composed of optoelectronic devices, functiona...

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Problems solved by technology

[0004] If an optical network device with an optical port can only match optical modules of one rate, it will cause waste of resources and restrictions on use. Therefore, the optical ports of existing optical network devices are usually designed to be pluggable. That is, the user can replace the optical module connected to the physical chip according to the usage requirements (each optical module corresponds to a fixed rate, for example, 100M optical module, 1000M optical module), in addition, when connected with the peer optical network device When communicating, the local device is required to perform rate self-adaptation on the peer device

[0005] However, the current PHY chip working in the optical port mode generally does not have the rate adaptive function, and the flexibility is low

Even if the PHY chips of a few manufacturers support rate negotiation in optical port mode, since the rate negotiation is completely completed by the hardware of the PHY chip (similar to the traditional PHY electrical port mode), the PHY chips of these manufacturers are too expensive due to not widely used

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