This paper describes an architecture for a high performance active router. The system is designed as an open research platform, with a range of configuration options and possibilities for extension in both the software and hardware dimensions. The system is built around a scalable switch fabric and includes a general-purpose processor subsystem at each port, enabling flexible packet processing ...

The RDT network Router chip is a versatile router for the massively parallel computer prototype JUMP-1, which is currently under development by collaboration between 7 Japanese universities[1]. The major goal of this project is to establish techniques for building an e cient distributed shared memory on a massively parallel processor. For this purpose, the reduced hierarchical bit-map directory...

We introduce and report recent developments on a novel five port optoelectronic voltage controlled oscillator consisting of a resonant tunneling diode (RTD) optical-waveguide integrated with a laser diode. The RTD-based optoelectronic oscillator (OEO) has both optical and electrical input and output ports, with the fifth port allowing voltage control. The RTD-OEO locks to reference radio-freque...

In order to provide modern multimedia applications with firm guarantees on quality of service (QoS) we have proposed a simplified guaranteed service. In this paper we introduce a router model with per-input shapers for the aggregate flows at the output ports. We calculate the delay bound for the guaranteed-service traffic. The existing QoS architecture for differentiated services does not give ...

This paper presents an asymptotically optimal online algorithm for compressing the Forwarding Information Base (FIB) of a router under a stream of updates (namely insert rule, delete rule, and change port of prefix). The objective of the algorithm is to dynamically aggregate forwarding rules into a smaller but equivalent set of rules while taking into account FIB update costs. The problem can b...

Optical nonreciprocity and routing using optocal microcavities draw much atttention in recent years. Here, we report the results of study on optomechanical multimode interference an optical microcavity. The system used here possesses multi-optical modes a mechanical mode. Optomechanical induced transparency absorption, appear due to between different paths. can present significant properties wh...

A 640-Gb/s high-speed ATM switching system that is based on the technologies of advanced MCM-C, 0.25m CMOS, and optical wavelength-division-multiplexing (WDM) interconnection is fabricated for future broadband services. A 40-layer, 160 114 mm ceramic MCM forms the basic ATM switch module with 80-Gb/s throughput. It consists of an 8 advanced 0.25m CMOS LSIs and 32 I/O bipolar LSIs. The MCM has a...

Novel optical network architectures are proposed for creating future network services. The first architecture is a centralized approach for higher energy efficiency; it yields a data centercentric metro/access optical aggregation network based on wavelength/time-slot multiplexing. Not only higher application layer functions but also all layer-3 or upper traffic are transferred through the simpl...

This paper discusses multi-hop operation of an optical-label switching system, demonstrating rapid alloptical packet switching with 2R regeneration for the data and optical label swapping for the label. Introduction Optical-label switching technology has the potential to provide low latency and transparency desired for the next generation Internet [1-2]. For network applications, the router mus...

In this paper, an auto-optical inspection system for fishtail collapse of router was proposed. The proposed AOI system first extracts the fishtail image of router by developed mechanism. A method for identifying the center of fishtail was proposed. The 1D profile formed by the boundary and center of fishtail is used to segment the fishtail into several blades. We used the end gash to identify o...