多域ASON资源预留方案研究

Research on resource reservation strategy in multi-domain ASON

根据源路由方式的特点,将域内资源预留方案扩展到多域ASON中,形成三种域间资源预留方案:域间保守前向资源预留、域间贪婪前向资源预留和域间后向资源预留。仿真结果表明,随着网络负载的加大,域间贪婪前向资源预留由于占用了过多的冗余资源,其阻塞率逐渐超过域间保守前向资源预留方案,而域间后向资源预留方案在任何网络负载情况下都具有最小的阻塞率。

According to the characteristics of source routing, expanded intra-domain resource reservation strategies into three inter-domain resource reservation strategies adopted in multi-domain ASON： inter-domain conservative FRP, inter-domain greedy FRP and inter-domain BRP. The simulation results show that, with the increase of network traffic, the blocking ratio of inter-domain greedy FRP gets higher than that of inter-domain conservative FRP, because the latter occupy too much redundant resource. inter-domain BRP has the lowest blocking ratio among three strategies under any network traffic.