Method and device for extending functionality and performance of network access device

Abstract

The invention relates to a device and a method for expanding function and performance of a line access card in a network access device, which adds a module such as an FPGA which can flexibly collocate function on the basis of a line access card in an existing network access device, collocates each functional module in an integrated circuit board as required by the user by adopting the methods such as software controlling, and ensures that the same line access card can meet different functional requirements and corresponding performance requirements.

Description

technical field [0001] The invention relates to network access equipment, in particular to a device and method for extending the function and performance of a line access card of the network access equipment. Background technique [0002] In recent years, the broadband access market has developed rapidly, and a variety of broadband access technologies have emerged, such as digital subscriber line (xDSL), gigabit passive optical network (GPON), Ethernet-based passive optical network (EPON) ), etc., in network access devices using these technologies, complex signal processing such as conversion between different protocols and adapting to different business applications is involved. [0003] For example, an IP network digital subscriber line access multiplexer (IP DSLAM) is a central office network access device for xDSL, which is mainly used for Layer 2 data forwarding, Layer 3 data forwarding, IPTV and related user security and Authentication protocols (AAA / Radius, DHCP, PPP...

AI Technical Summary

Problems solved by technology

[0014] 1) In the case of developing a new high-performance network access device, it often takes a lot of investment and a long time to select, design, develop and test to ensure that the new board is fully compatible with the existing software and functions, and at the same time This means that the R&D department must maintain more product lines at the same time for a period of time, which requires a lot of extra manpower and material resources

[0015] 2) If you switch to the same series of higher-performance devices, this can better solve the software compatibility and reliability problems, but it is often subject to the product development plan of the chip supplier, and in order to achieve better performance, the chip supplier It is often necessary to change the hardware package, change the type of CPU and operating system in the system, or even change the hardware structure. In this case, a large amount of development investment is also required, and the price of the product with improved performance is often higher, which is not suitable for low end line access card

[0016] 3) Software optimization also requires a lot of investment in development and testing, and the performance that can be improved through software optimization is very limited

[0017] 4) If the user-customized software is used, the user can obtain more functions or stronger performance under the premise of losing some capabilities of the line access card, but this method cannot improve the line access card as a whole. card-in performance

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