摘要
为了完善EPON系统在网络层的保护机制,针对VRRP在保护上游网络下行链路时存在的缺陷,设计提出将OSPF路由技术引入OLT系统,利用LSA的交互维护邻居状态机,使OLT能感知上游链路状态变化并触发网络自愈。基于三层接口、路由管理和OSPF路由模块的设计,在VxWorks系统下开发路由模块,EPON设备实现了对未知拓扑的MSTP传输网内部链路提供保护。
To improve EPON＇s reliability mechanism in network layer,and considering that VRRP fail to protect downlink service of upstream effectively,this paper proposes the introduction of OSPF to OLT.When OSPF enable,OLT is able to perceive the link status change within upstream network by LSA and neighborhood state machine,and then trigger self-healing of the whole network.Focuses are the design process of network interface,routing management and OSPF module,and VxWorks-based embedded these modules to software of the core switch.
出处
《光通信技术》
CSCD
北大核心
2010年第12期5-8,共4页
Optical Communication Technology
