Multi-protocol link encapsulation technique based POS (packet over synchronous optical network/internet protocol) frame decoding and framing device and method thereof

Abstract

The invention discloses a multi-protocol link encapsulation technique based POS (packet over synchronous optical network / internet protocol) frame decoding and framing device and a method thereof. The device comprises an FPGA (field programmable gate array) frame decoding and framing module and a plurality of input and output interfaces arranged on a port of the FPGA frame decoding and framing module. The FPGA frame decoding and framing module comprises an FPGA chip unit, a POS message is subjected to frame decoding through the FPGA chip to acquire an IP (internet protocol) data packet, and the IP data packet is encapsulated into a Ethernet format to acquire Ethernet data; each input and output interface is used for outputting the POS message accessing to a link to the FPGA frame decoding and framing module and outputting the Ethernet data acquired after frame decoding of the POS message by the FPGA frame decoding and framing module. The method refers to a POS frame decoding and framing method utilizing the device. Frame decoding and framing of the POS message can be realized without utilization of special POS frame decoding and framing chips, and the device and the method have the advantages of high efficiency, low power consumption and low required cost.

Description

technical field [0001] The invention relates to the technical field of POS (Packet Over SONET / SDH), in particular to a POS deframing and framing device and method based on multi-protocol link encapsulation technology. Background technique [0002] POS (Packet Over SONET / SDH) technology refers to a technology that uses the high-speed transmission channel provided by SONET (Synchronous Optical Network) / SDH to directly transmit IP (Internet Protocol, Internet Internet Protocol) packet groups. It puts the IP layer on the SDH network to run, avoiding some indirect costs in the communication process. POS is positioned in the carrier-scale data backbone network, and its network is mainly composed of large-capacity high-end routers connected through high-speed optical fiber transmission channels. POS uses links and PPP (Point to Point Protocol) protocols to encapsulate data packets, retaining the connectionless-oriented characteristics of IP protocols. [0003] SDH (Synchronous Di...

AI Technical Summary

Problems solved by technology

However, this structure limits the number of POS interfaces and ETH interfaces of the device at the beginning of the design, and binds the interface attributes of each port, reducing the flexibility and availability of the device interface. On the other hand, adding a chip between the optical module and the FPGA It also reduces the integration and stability of the device, and the addition of multiple Framer chips also increases a large amount of equipment cost overhead

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