摘要
分析了EPON系统中OLT对其下属的所有在线ONU实现软件升级的技术,以及升级过程中OLT与ONU进行OAM消息交互的流程,并在此基础上提出了ONU侧软件升级的具体设计方案。OLT能通过TFTP协议完成文件的传输,统一管理和维护ONU的升级状态,使ONU在升级出错的情况下能实现自动回滚。
This paper analyzes the software upgrades technology for the all online ONUs belong to OLT and the interactive processes of OAM messages between OLT and ONUs,on this basis peoposes an specific design scheme of software upgrade for ONUs.OLT can transfer the file,manage and maintain the upgrading state of ONUs through TFTP（Trivial File Transfer Protocol）,and ONUs can achieve Back-Rolling function when upgrading error happens.
出处
《光通信技术》
CSCD
北大核心
2011年第2期13-15,共3页
Optical Communication Technology
