Packet reordering is not pathological network behavior
IEEE/ACM Transactions on Networking (TON)
Wavelength and time domain exploitation for QoS management in optical packet switches
Computer Networks: The International Journal of Computer and Telecommunications Networking - QoS in multiservice IP networks
IEEE/ACM Transactions on Networking (TON)
Broadband packet switching: a personal perspective
IEEE Communications Magazine
Optical packet switching in core networks: between vision and reality
IEEE Communications Magazine
Keeping the packet sequence in optical packet-switched networks
Optical Switching and Networking
QoS performance of optical burst switching in IP-over-WDM networks
IEEE Journal on Selected Areas in Communications
Optical routing of asynchronous, variable length packets
IEEE Journal on Selected Areas in Communications
Exploitation of DWDM for optical packet switching with quality of service guarantees
IEEE Journal on Selected Areas in Communications
The European IST project DAVID: a viable approach toward optical packet switching
IEEE Journal on Selected Areas in Communications
The effect of packet reordering in a backbone link on application throughput
IEEE Network: The Magazine of Global Internetworking
Positioning of the RPR standard in contemporary operator environments
IEEE Network: The Magazine of Global Internetworking
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This paper considers an optical packet-switched node subject to asynchronous, variable-length packets and connection-oriented operation. We firstly address the problem of setting up the optical virtual connections and properly configuring the forwarding table at the node. We do not deal with routing aspects, but with the efficient mapping of the virtual connections to the wavelengths of the output ports. In this context, we suggest a wavelength assignment procedure that improves the node performance in comparison with simple random or balanced schemes. We then address the QoS provisioning problem. While existing solutions focus on applying some forms of resource reservation on top of the contention resolution algorithm, here we propose a method based on the well-known ATM scheme of defining different service categories. In particular, we define a case study with three OPS service categories, and for each category a specific contention resolution algorithm is applied. With such a strategy the algorithms present the problem of a different performance alignment; we solve it by designing an ad hoc optical buffer architecture based on non-degenerate delays. The performance of the final node architecture is evaluated by simulation. The results obtained indicate the merits of this method, which opens up interesting future developments for a whole optical network scenario.