An Analytical Approach to Optical Burst Switched Networks
Optical burst switching (OBS) is envisioned to be one of the promising technologies to support bandwidth-intensive applications in the future Internet. An Analytical Approach to Optical Burst Switched Networks discusses architectures such as SOBS, SynOBS,
- PDF / 3,131,983 Bytes
- 271 Pages / 439.37 x 666.142 pts Page_size
- 82 Downloads / 234 Views
T. Venkatesh ยท C. Siva Ram Murthy
An Analytical Approach to Optical Burst Switched Networks
123
T. Venkatesh Department of Computer Science and Engineering Indian Institute of Technology Guwahati-781039 India [email protected]
C. Siva Ram Murthy Department of Computer Science and Engineering Indian Institute of Technology Chennai-600036 India [email protected]
ISBN 978-1-4419-1509-2 e-ISBN 978-1-4419-1510-8 DOI 10.1007/978-1-4419-1510-8 Springer New York Dordrecht Heidelberg London Library of Congress Control Number: 2009939338 c Springer Science+Business Media, LLC 2010 All rights reserved. This work may not be translated or copied in whole or in part without the written permission of the publisher (Springer Science+Business Media, LLC, 233 Spring Street, New York, NY 10013, USA), except for brief excerpts in connection with reviews or scholarly analysis. Use in connection with any form of information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed is forbidden. The use in this publication of trade names, trademarks, service marks, and similar terms, even if they are not identified as such, is not to be taken as an expression of opinion as to whether or not they are subject to proprietary rights. Printed on acid-free paper Springer is part of Springer Science+Business Media (www.springer.com)
To The Almighty, my parents and my wife Venkatesh
To the memory of my father-in-law, N.V.P. Sastry Siva Ram Murthy
Preface
Optical burst switching (OBS) is envisioned to be one of the promising technologies to support all-optical switching in the core Internet. It combines the benefits of the fine-grained optical packet switching and the coarse-grained optical circuit switching while avoiding the limitations of both of them. In an OBS network, the data from the clients in the access network are collected at an ingress (edge) node, sorted based on the egress (destination) node, and grouped into variable-sized bursts. Increasing the basic unit of switching from a packet to a burst reduces the switching and processing overhead per packet. Prior to the transmission of the bursts, a control packet is sent to the destination node in order to reserve a lightpath for the corresponding data burst. The control packet is transmitted in the optical domain but processed electronically at each intermediate (core) node. The data burst is transmitted after some time without waiting for any acknowledgment from the destination node. By separating the control and the data planes in optical switching, OBS avoids the need for optical buffers as well as optical processing logic in the network. The packets are again extracted from the bursts at an egress node and then forwarded to their respective destinations in the access network. OBS is finding potential application in grid computing and metro area networks to transfer bursty data across the Internet. In the recent past, significant research has been done to improve the basic architectur
Data Loading...
