Security scheme, especially a suitable authentication process, can improve QoS provision for data traffic transfer over optical switched network. The authentication process can limit the degradation of QoS support including to provide the traffic requirements such as the traffic loss.
To limit the loss of data traffic by assuring the authentication of traffic by each core node belonging to the built lightpath can be considered as an advanced approach that contributes for improving QoS provision over an optical switched network.
Please take a look at Hop-by-hop/end-to-end efficient authentication protocols and see if they can fit your case study. I think secure authentication schemes can improve QoS by dropping any packet that originates from outsiders (Unsolicited traffic) or adversaries (DoS attack).
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