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Resilience for IP-over-DWDM backbone networks

机译:IP over DWDM骨干网的弹性

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摘要

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 recent 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 in recent months. 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.
机译:鉴于Internet流量的广泛增长和对服务质量的日益重视,IP骨干网设计的最关键要素之一是为严重故障(例如光纤电缆断裂)提供弹性。近年来,许多IP骨干网的带宽粒度单位已经从STM-1(155 Mbit / s)增长到STM-16(2-4 Gbit / s),而STM-64(10 Gbit / s)骨干电路在最近几个月变得越来越普遍。日益增加的流量集中度使IP骨干网极易出现故障,这意味着关键的挑战是将嵌入式弹性设计到网络中。本文考虑了此类问题,并讨论了与IP骨干网中不同级别的保护相关的各种取舍。

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