Availability-Aware Service Chain Provisioning with Sub-chain-enabled Coordinated Protection
Availability-Aware Service Chain Provisioning with Sub-chain-enabled Coordinated Protection
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发表时间：
2021-05
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通讯作者：
Yuncan Zhang;Fujun He;E. Oki
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作者：
Yuncan Zhang;Fujun He;E. Oki
本文提出了针对可用性保证服务功能链（SFC）配置的一个启用子链的协调保护模型，该模型认为每个组件的可用性构成SFC，包括链接和VNF。与传统的保护模型不同，为整个链提供了一定的保护，建议的模型为每个SFC配置子链，并为每个子链提供适当的保护，以实现所需的可用性成本效益。我们将提出的模型作为优化问题，以最大程度地减少部署成本。提出了一种启发式方法来解决这个问题。数值结果表明，所提出的模型在部署成本方面优于常规模型。
This paper proposes a sub-chain-enabled coordinated protection model for the availability-guaranteed service function chain (SFC) provisioning, which considers the availability of each component to constitute an SFC, including links and VNFs. Unlike conventional protection models providing certain protection for the whole chain, the proposed model configures sub-chains for each SFC and provides proper protection for each sub-chain to achieve the required availability cost-efficiently. We formulate the proposed model as an optimization problem to minimize the deployment cost. A heuristic is presented to tackle the problem. The numerical results show that the proposed model outperforms the conventional ones in terms of deployment cost.