Richard Rabbat

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We propose a sublambda traffic-grooming scheme on wavelength-division-multiplexing ring networks, named optical burst transport. The network protocol and architecture are designed to support dynamic bandwidth allocation, which is more reasonable for bursty data traffic. To verify our network protocol and architecture, we build a testbed which supports(More)
Virtual concatenation (VCAT) is a standardized layer 1 inverse multiplexing technique that can be applied to the optical transport network (OTN), synchronous optical network (SONET), synchronous digital hierarchy (SDH), and plesiochronous digital hierarchy (PDH) component signals. By inverse multiplexing, it combines multiple links at a particular layer(More)
This paper proposes an approach to Traffic Engineering that uses Differentiated Services (diffserv) and Multi-Protocol Label Switching (MPLS) to provide quantitative QoS guarantees over an IP network. An algorithm that determines QoS-constrained routes is proposed and a framework that uses such an algorithm is outlined. This framework removes the(More)
This paper discusses the design and implementation of a high-availability clustering solution. This solution provides data integrity guarantees and a simple and effective way for making services highly available. The implementation of the system design in a Linux environment on commodity hardware is documented. A proof-of-concept to provide a highly(More)
rate traffic such as voice over IP with guaranteed delay bound and best-effort traffic, such as data services with minimum bit rate guarantee while achieving fairness on any excess available bandwidth. The performance of this algorithm is illustrated by simulation results done using Opnet. We also discuss a dynamic polling mechanism that enhances the link(More)
A sublambda traffic-grooming scheme on wavelength-division-multiplexed (WDM) rings, which is called optical burst transport (OBT), is proposed. The network protocol and architecture allow increased flexibility to tailor the transport network behavior for efficient delivery of bursty data traffic. Using different network parameters, its performance is(More)
Link-state protocols such as OSPF are the dominant routing technology in IP networks. Recent work has addressed the ability of OSPF to make smart routing decisions based on network configuration and bandwidth demand. Traffic engineered networks that make use of this enhanced routing will experience loops in the case of link failure. This paper presents an(More)
Status of This Memo This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited. Abstract This document clarifies the use of addresses in Generalized Multiprotocol Label Switching (GMPLS) networks. The aim is to facilitate interworking of GMPLS-capable Label(More)