邻居发现协议在基于FPGA的IPv6 over AOS网关上的实现

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针对IPv6协议接入空间通信网络的需求,重点讨论了邻居发现协议(NDP)在基于现场可编程门阵列(FPGA)的IPv6 over CCSDS-AOS网关上的实现。在IPv6 over CCSDS-AOS网关系统上搭建NDP协议模块,实现网关地址解析;通过状态机控制实现NDP协议模块功能。实验表明,该设计解决了IPv6 over CCSDS-AOS网关主动和被动地址解析以及邻居缓存表查找和管理问题,不需要网关对NDP进行协议转换和转发。目前已在IPv6 over CCSDS-AOS网关中应用。

In response to the need for IPv6 protocol access to the spatial communication network,the implementation of the Neighbor Discovery Protocol(NDP)on the FPGA-based IPv6 over CCSDS-AOS gateway is discussed.It is proposed to build the NDP protocol module on the IPv6 over CCSDS-AOS gateway system to realize the gateway address resolution.The function of NDP protocol module is realized through state machine control.Experiments show that the design solves the problems of IPv6over CCSDS-AOS gateway’s active and passive address resolution,neighbor cache table lookup and management without requiring the gateway to perform protocol conversion and forwarding on the NDP protocol.It has been applied in IPv6 over CCSDS-AOS gateways.