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设计了一个基于JIT协议的OBS核心控制器,该控制器将路由选择和信道调度整合在一个模块中处理,并采用信道资源信息共享与先调度再转发的处理机制,简化了控制器的结构,有效提高了OBS核心节点的处理速度,同时也避免了路由选择的盲目性,减少丢包。在FPGA平台上实现了提出的OBS核心控制器结构并进行了实际测试。测试结果表明:接收完BCP包到发出光开关设置信号的最短时间为100ns。
An OBS core controller based on JIT protocol is designed. The controller integrates routing and channel scheduling in one module and adopts the processing mechanism of channel resource information sharing and pre-scheduling retransmission, which simplifies the structure of the controller, Effectively improve the processing speed of OBS core nodes, but also avoid the blindness of routing and reduce packet loss. In the FPGA platform to achieve the proposed OBS core controller structure and conducted a practical test. The test results show that: the minimum time for receiving the BCP packet until the optical switch setting signal is received is 100 ns.