Method and device for enabling switch chip to generate OAM (Operation Administration and Management) messages at constant speed

Abstract

The invention discloses a method and a device for enabling a switch chip to generate OAM (Operation Administration and Management) messages at a constant speed, which belong to the field of network communication. Different CCM (Continuity Check Messages) sending frequencies are supported by multiple timer intervals. A register is used for configuring the adjustable delay time of MEP (Maintenance Endpoint) tables and adjusting the regular CCM sending time of each MEP. All the MEPs on the current time shaft can be processed at just one Interval, and the processing time dots of all the MEPs are evenly scattered on the dots of the Interval/(MEP End-MEP Start+1), so that the CCM sending frequency is set as the Interval, and the processing time of all the MEPs is evenly scattered. The method and the device can ensure that CCMs are generated by each MEP at a correct frequency, messages needing to be transmitted by the network are transmitted at a constant speed to an utmost extent, and the impact on the flow of network equipment is reduced.

Description

technical field [0001] The invention relates to the field of network communication, in particular to a method and a device for generating OAM messages at a uniform speed by a switch chip. Background technique [0002] Ethernet technology has been widely used due to its good economy, interoperability and ease of use. Carrier Ethernet has become an important research field of current network technology. Carrier Ethernet must provide good service management, fault detection, performance monitoring and other functions, and the core of this function is OAM (Operation Administration and Maintenance). The initial version of Ethernet OAM was defined by IEEE 802.1ag. Later, in order to better adapt to the application of transmission Ethernet, the ITU organization released the ITU-T.Y1731 standard, which revised and improved 802.1ag and further improved Ethernet OAM. The standard defines two main categories of functions: fault management and performance monitoring. Fault management ...

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Problems solved by technology

[0004] According to the above description, although there are many optional values ​​for the frequency sent by CCM, in practical applications, it is generally selected according to the business, so the actual value used is limited, and the CCM of more than 1s can be completed by the CPU.

In addition, there are a large number of MEPs on the same device, and the device faces two challenges: first, to ensure that each MEP generates CCM packets at the correct frequency; Let the packets that need to be transmitted by the network be as uniform as possible, reducing the traffic impact on network devices

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