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Presenter: Fahad Ghonaim
Supervisor: Prof.Thomas Darcie and Dr.Sudhker Ganti

Date: Tue, April 21, 2015
Time: 12:30:00 - 00:00:00
Place: EOW 430

ABSTRACT

ABSTRACT:

Internet traffic growth has been increasing year-over-year for the last decade. Processing all of that traffic through traditional IP router has been an obstacle for further expansion because of capacity limitation and cost of processing. Router bypassing has been introduced where portion of traffic bypasses traditional router and be switched by the transport layer. Even though router bypassing have showed significant enhancement in cost of network operation, still the reduction of granularity multiplexing draw a criticism to bypassing techniques.

Features recently introduced in the G.709 Optical Transport Network (OTN) specification, including direct support for packet (i.e. Generic Framing Procedure) and the Hitless Adjustment (HAO), lead the way for a dynamic and finer granularity transport layer. In this study, we have developed an adaptive router bypassing technique that uses adjustable OTN channels driven by traffic behaviour. By monitoring queues for both channels (bypass and non-bypass), the system will adjust bandwidth allocation for both channels to optimize network performance. These dynamic adaptations reduce the negative impact of router bypass on statistical multiplexing. An OMNET++ simulation is presented that demonstrates that the rate of dropped packets can be lowered by 66% and queuing time by 11% compared with conventional router bypass.