Resilience for IP-over-DWDM backbone networks

Author

Veitch, Paul

Author_Institution

Network Syst. Eng., WorldCom, Cambridge, UK

Volume

14

Issue

1

fYear

2002

fDate

2/1/2002 12:00:00 AM

Firstpage

39

Lastpage

48

Abstract

Given the extensive growth in Internet traffic and increasing emphasis on service quality, one of the most crucial elements of IP backbone network design is to provide resilience to serious failures such as fibre-optic cable breaks. In previous years, the unit of bandwidth granularity for many IP backbone networks has grown from STM-1 (155 Mbit/s) through to STM-16 (2.4 Gbit/s), with STM-64 (10 Gbit/s) backbone circuits becoming prevalent. The increased concentration of traffic makes the IP backbone extremely vulnerable to failure, meaning a key challenge is to engineer embedded resilience into the network. This paper considers such issues and discusses various trade-offs associated with different levels of protection in an IP backbone network

Keywords

Internet; optical fibre networks; telecommunication network reliability; telecommunication network routing; telecommunication traffic; transport protocols; wavelength division multiplexing; 10 Gbit/s; 155 Mbit/s; 2.4 Gbit/s; IP backbone network design; IP-over-DWDM backbone networks; Internet service providers; Internet traffic; STM-1; STM-16; STM-64; backbone circuits; bandwidth granularity; core routers; fibre-optic cable breaks; network failure resilience; service quality; traffic concentration;

fLanguage

English

Journal_Title

Electronics & Communication Engineering Journal

Publisher

iet

ISSN

0954-0695

Type

jour

DOI

10.1049/ecej:20020104

Filename

990193