This method can be applied in the cases of wavelength, time or space multiplexing : deflection routing by time (TDM) is used in FDL technology to delay conflicting bursts; wavelength conversion is used to convert the conflicting burst to another wavelength in the same fiber, so that network flexibility increases, also deflection routing allows to redirect the conflicting burst to the output port of the next core router, and then the burst is transmitted towards the destination node in a different path.
The deflection routing is appropriate when there is no free output port in the core node, or there is no wavelength conversion or FDL possibilities.
More suitable approaches compared to segmentation use deflection routing and/or FDL.
As an effective way to reduce the burst loss is using several burst contention strategies in the same OBS core router, for example, it is suggested to use wavelength converters together with FDL in one core node  or wavelength converters with deflection routing .
If the FDL buffer is occupied with other bursts, the incoming burst is redirected into the deflection routing output.
2) uses the following contention resolution strategies: 1) wavelength conversion for two wavelength wi and W2 channels (a, b indexes), 2) FDL buffer which can hold up to two bursts (c index), 3) wavelength conversion for deflection routing over Wap wavelength channel (d index).
abcd]: a is used to describe the wavelength Wi, b is used to describe the wavelength W2, c is used to describe the usage of FDL, d is used to describe the usage of deflection routing over [W.
The proposed model also allows evaluating the impact of deflection routing mechanism.
The probability of using of deflection routing ([P.
Every additional burst collision resolution strategy is applied in the core node, such as deflection routing or bursts segmentation, which allow reducing burst flow loss, but increase the time spent on the node at the same time, that is highly important for delay sensitive data transmission.
Turuk, "Analysis of wavelength conversion and deflection routing in optical burst switched network", in Proc.
Okada, "Effective flow-rate control for the deflection routing based optical burst switching networks", in Asia-Pacific Conf.