串行同源故障通告机制及其在ASON中的应用

Failure notification mechanism based on serial communication and same source and its application in ASON

提出了基于串行同源的故障通告机制,针对相同源节点的连接进行故障通告,并引入串行机制,在网络故障恢复率和故障恢复时间2个指标取得理想的折衷。通过扩展RSVP-TE协议实现该机制,搭建了15个节点的自动交换光网络仿真实验平台。实验数据表明,与传统的故障通告机制相比,该机制在一定程度上避免了网络恢复过程中资源预留冲突的问题,在5000条连接的网络中,网络故障恢复率提高21%,故障恢复时间缩短近15%。

By extending the functions of RSVP-TE, a new mechanism of failure notification based on serial communication and same source was proposed. Since serial communication mechanism was introduced, it could achieve failure notification according to source of connections affected by failure, and made contribution to failure recovery rate and failure recovery time. Experiments were implemented in a 15-node-ASON test-bed. And the results show that, compared with traditional failure notification mechanism, the new mechanism can avoid the conflicts of resource reservation in the process of network failure recovery to a certain degree. With this new mechanism, network failure recovery rate is effectively increased by 21% and network failure recovery time is shortened by 15% in the testing network with 5 000 connections.