摘要
提出可以实现EPON系统业务保护和故障恢复的快速环网方式。在OLT上通过快速以太网环网,在PON口采用主干光纤保护或全保护,在ONU侧通过手拉手保护组网方式,实现整个EPON系统的冗余保护。此保护方式达到了保护时间小于50 ms的电信级要求,而且具有算法简单、拓扑收敛速度快,业务恢复时间快等显著优势。EPON系统网络拓扑,采用此种组网方式能有效地提高以太网环网的可靠性和稳定性,实现较好的业务保护效果。
This paper gives a detailed description of the fast Ethernet ring networking mode,and this mode can achieved business protection and fault recovery in EPON system.By fast Ethernet ring network on OLT,trunk fiber protection architectures and branch fiber protection architecture in PON,and hand in hand protection in ONU,the redundancy protection for the entire EPON system could be realized.This protection mode could meet the carrier-grade requirements of protection time less than 50ms,and has some significant advantages such as simple algorithm,faster topology convergence,business recovery and so on.By this networking,the reliability and stability of the Ethernet ring network could be effectively improved and the better protection effect realized in the EPON system networking topology.
出处
《通信技术》
2012年第5期47-49,共3页
Communications Technology
关键词
EPON
接入网
以太环网
Ethernet Passive Optical Network（EPON）
access network
Ethernet ring
