Generalized Multi-Protocol Label Switching (GMPLS) is a suite of protocol extensions to MPLS to make it generally applicable, to include, for example, control of non packet-based switching, and particularly, optical switching. One consideration is to use GMPLS protocols to upgrade the control plane of optical transport networks. This document illustrates this process by describing those extensi...

Most of today's optical networks are built on E:ONET rings [I]. Using WDM technology, multiple rings can be sup ported on a single fiber ring [3]. In this architecture, each wavelength independently carries a SONET ring. Each SONET ring can further support multiple low speed streams (e.g. an OC48 SONET ring can support 4 OC-12 or 16 OC-3 streams at the same time). At each node a WDM Add/Drop Mu...

Load-balanced routing in SONET rings has attracted much attention recently. Most prior works model the SONET rings as undirected rings and the traffic as undirected chords. While this model fits well to the traditional telephony applications, it is inefficient for the explosive Internet traffic and multimedia data communications, which exhibit unidirectional and asymmetric nature. For these app...

Load-balanced routing in SONET rings has attracted much attention recently. Most prior works modeled the SONET rings as undirected rings and the traffic as undirected chords. While this model fits well to the traditional telephony applications, it is inefficient for the explosive Internet traffic and multimedia data communications, which exhibit an unidirectional and asymmetric nature. For thes...

We consider a problem which arises in optical routing. WDM/SONET rings are a network architecture used by telecommunications carriers for traffic streams. The dominant cost factor in such networks is the total number of add-drop multiplexers (ADMs) used. A list of traffic streams to be routed between pairs of nodes is given. In this paper we consider the problem where we need to assign a route ...

February 19, 2015 Version 1.0 Type Package Title calculate ad hoc distance thresholds for DNA barcoding identification Date 2013-11-08 Author Gontran Sonet Maintainer Gontran Sonet Description An ad hoc distance threshold can be calculated for each particular reference library of DNA barcodes. Specimen identification at this ad hoc distance threshold (using the best close ma...

In this paper we design distributed protocols for synchronization in SDH networks. We start by suggesting a new abstraction to model the communication of control information in SDH/SONET frame headers. The new model is then used in the construction of realistic and fault-tolerant distributed protocols for the timing distribution problem. In this problem the nodes of an SDH/SONET network should ...

In SONET/WDM networks, one fiber supports multiple wavelengths and each wavelength supports several low rate tributary streams. ‘Traffic grooming’ then is defined as properly using SONET Add/Drop Multiplexer to electronically multiplex and demultiplex required tributary traffic patterns with minimal resource cost (wavelengths and ADMs). This paper studies traffic grooming problem in single hub ...