Convergent type Ethernet over plesiochronous digital hierarchy (EoPDH) network bridge equipment and data transmission method thereof

Abstract

The invention discloses convergent type Ethernet over plesiochronous digital hierarchy (EoPDH) network bridge equipment and a data transmission method thereof. The transmission process of up data in the method comprises the steps that: E1 digital signals sent by n E1 interfaces of a line interface module are simultaneously received at each E1-media access control (MAC) module end, the received E1 digital signals are converted to Ethernet data packets and then are successively sent to an Ethernet exchange chip through one Ethernet interface, and the Ethernet data packets are forwarded to a server side by the Ethernet exchange chip; and the transmission process of down data comprises the steps that: when the Ethernet data packets issued by the Ethernet exchange chip are received at each E1-MAC module end, the Ethernet data packets are converted to the E1 digital signals, then are copied for n copies, and are respectively sent to the corresponding n E1 interfaces, and afterwards, the signals are processed by the line interface module and are transmitted to a client side through a transmission line. The convergent type EoPDH network bridge equipment and the data transmission method thereof have the advantages that the implementation difficulty of the equipment is reduced, FPGA (field programmable gate array) resources are saved, and more E1 access quantities can be achieved.

Description

technical field [0001] The invention relates to communication network technology, in particular to a high-density convergence EoPDH (Ethernet-over-PDH) network bridge device and a data transmission method suitable for star networking requirements such as remote data collection and centralized monitoring. Background technique [0002] EoPDH bridge generally adopts E1 point-to-point mode to form a connection between two points, and an EoPDH bridge is placed at each end. [0003] In actual remote data collection and centralized monitoring access network applications, using the existing rich star E1 resources, EoPDH bridges are often used in single-point to multi-point star networking: figure 1 As shown, multiple EoPDH bridges are placed on the aggregation side. The number of EoPDH bridges is the same as the number of remote clients, and each EoPDH bridge includes an E1 interface and an Ethernet interface. All EoPDH bridges convert the Ethernet The data packets are aggregated ...

AI Technical Summary

Problems solved by technology

Because the bandwidth of each E1 signal is only 2Mbps, and the efficiency of the 100M network port is 50 times that of the E1 signal rate, so the traditional convergent EoPDH bridge equipment uses a 100M network port to connect to one E1 signal, which also causes a serious waste of resources.

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