【摘要】 高可靠性是现代路由器发展的主要趋势,同时高可靠路由器也是基于路由器为架构的大型组网的基本保障。基于路由器Boot引导程序被损坏时设备仍然能够正常启动,本文利用两片SPI Flash保存相互备份的Boot引导程序,在FPGA的逻辑控制下,实现路由器双SPI Flash自动翻转的高可靠启动,并给出了FPGA内部逻辑的模块设计。结合VTP测试软件,对路由器高可靠性启动进行了测试,试验结果验证了基于双SPI Flash自动翻转的高可靠路由器启动设计的正确性和可行性。更多还原

【Abstract】 High reliability isthemajortrend inthe development of modern routers, andhighly reliable routers are also basic guarantee for building large network which regarded routers as the framework.As how to make the router will still be able to start properly when the Boot loader program is damaged; two pieces of SPI Flash saved boot loader program which both has backups are used to realize the high reliability startup based on automatic reverse of double SPI Flash under the logic control of FPGA, as well as the modular design in inner logic of FPGAis given out in this paper. The experimental results verified the validity and feasibilityof the boot up design of highly reliable router based on automatic reverse of double SPI Flash after testing highly reliable startup of router combined with the VTP test software.更多还原