FRADIR Meets Availability

2020 16th International Conference on the Design of Reliable Communication Networks DRCN 2020 Pub Date : 2020-03-01 DOI:10.1109/DRCN48652.2020.1570603965

L. Pasic, Azra Pasic, Ferenc Mogyorósi, Alija Pašić

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引用次数: 5

Abstract

The framework FRADIR is designed to improve disaster resilience for mission-critical applications through reliable network design, regional failure modeling and protection routing. Two different failure models are jointly considered: independent random failures and regional failures, which are used to model the effects of disasters. In this paper we provide the first availability analysis of FRADIR. We examine the effect of the Spine and protection routing on end-to-end availability. In particular the 1+1 and four versions of General Dedicated Protection (GDP) are utilized to demonstrate the bandwidth allocation, blocking probability and availability trade-off. After the comprehensive availability analysis, to take control over this trade-off we introduce a novel routing method for FRADIR, called Availability Constraint FRADIR (AC-FRADIR) which not only minimizes the bandwidth cost and ensures protection against certain failure events (listed in the SRLG list), but also guarantees that after any of these failure events the remaining communication path still satisfies a certain availability level.

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fradr满足可用性

fradr框架旨在通过可靠的网络设计、区域故障建模和保护路由，提高关键任务应用的灾难恢复能力。两种不同的失效模型被联合考虑:独立随机失效和区域失效，这两种失效模型被用来模拟灾害的影响。本文首次对fradr进行了可用性分析。我们研究了Spine和保护路由对端到端可用性的影响。特别使用1+1和四个版本的通用专用保护(GDP)来演示带宽分配，阻塞概率和可用性权衡。在全面的可用性分析之后，为了控制这种权衡，我们为FRADIR引入了一种新的路由方法，称为可用性约束FRADIR (AC-FRADIR)，它不仅最大限度地减少带宽成本并确保对某些故障事件(在SRLG列表中列出)的保护，而且还保证在任何这些故障事件之后，剩余的通信路径仍然满足一定的可用性水平。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2020 16th International Conference on the Design of Reliable Communication Networks DRCN 2020

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