To transport information with performance guarantees expressed in terms of delay, bounded delay variation, minimum packet loss, the architecture of multigigabit and terabit networks today designed in optical technology requires the use of high speed electrical/optical routers and switches. These interfaces need to manage efficiently the QoS, in particular they have to guaranty a short delay in the queues. This paper presents an efficient solution to optimize buffer dumping allowing to reduce

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... nificantly the delay or losses caused by buffer overflow. To highlight the proposed architecture we have analyzed its performance compared with different configurations of polling scheme.