Capturing circuit and writing control method of 10G EPON (10 Giga Ethernet Passive Optical Network) message

Abstract

The invention discloses a capturing circuit and a writing control method of 10G EPON (10 Giga Ethernet Passive Optical Network) messages. The writing control method comprises the following steps: receiving EPON messages interacting among 10G EPON OLT (Optical Line Terminal) and ONU (Optical Network Unit) through an optical module and a 10G SERDES (Serializer/Deserializer); combining and triggering message capturing according to set conditions after the decoding at a PCS (Physical Coding Sub-layer); writing the captured message into capturing cache, wherein the steps and formats for storing the capturing frames are as follows: writing 128bit frame data at an even number clock period while a frame envelope is valid; and writing the frame head byte number, the frame end byte number, the reaching time, the frame error indication, CRC (Cyclic Redundancy Check) verification error indication and frame boundary symbol of the frame within a clock period at the frame end. With the adoption of the capturing circuit and the writing control method, continuous EPON messages of 10 G can be captured and analyzed rapidly and precisely; the storage space of the captured message is reduced through specific triggering and screening conditions; the performance and the use efficiency of the remote scheduling are improved; and the inter-compatibility of factories of different equipment is enhanced.

Description

technical field [0001] The invention relates to the communication field, in particular to a 10G EPON message capture circuit and a write control method. Background technique [0002] 10G EPON (10 Giga Ethernet Passive Optical Network, 10 Gigabit Ethernet Passive Optical Network) is a new high-speed optical fiber access method that has only appeared in recent years. It adopts point-to-multipoint passive optical fiber transmission, carries high-speed voice, video, game, IPTV (Internet Protocol Television, interactive Internet TV) and other services on Ethernet, and provides quite reliable performance QoS (Quality of Service, service quality) service quality. The emergence of 10G EPON high-speed access technology has created conditions for the realization and popularization of the Internet of Things and cloud computing. [0003] On the PON (Passive Optical Network, Passive Optical Network) side, it uses the PCS (Physical Coding Sublayer, Ethernet physical coding sublayer) tec...

AI Technical Summary

Problems solved by technology

[0010] The capture method of high-speed interactive PON packets above 10G is very complicated, and has always been an invisible black box for equipment manufacturers and operators, which has brought great obstacles to the promotion and application of 10G EPON technology

The 10G EPON system equipment puts forward more stringent test requirements. The current 10GE test equipment is difficult to meet the actual test requirements, and cannot capture and analyze 10G EPON packets; in addition, the current communication exchange rate is getting higher and higher, and the packet capture cache Relatively limited, when writing EPON frames, it is more and more important to set corresponding trigger or filter conditions

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