Method
In OBS, packets are aggregated into data bursts at the edge of the network to form the data payload. Various assembling schemes based on time and/or size exist (see burst switching). Edge router architectures have been proposed (see ). OBS features the separation between the control plane and the data plane. A control signal (also termed burst header or control packet) is associated to each data burst. The control signal is transmitted in optical form in a separated wavelength termed the control channel, but signaled out of band and processed electronically at each OBS router, whereas the data burst is transmitted in all optical form from one end to the other end of the network. The data burst can cut through intermediate nodes, and data buffers such as fiber delay lines may be used. In OBS data is transmitted with full transparency to the intermediate nodes in the network. After the burst has passed a router, the router can accept new reservation requests.
Read more about this topic: Optical Burst Switching
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