.png){kind=icon}
返回
Dynamic slave controller assignment for enhancing control plane robustness in software-defined networks
.png){kind=icon}
PRE
AI
DOI：10.1016/j.future.2019.01.010.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Multi-controller is a scalable control plane solution for the large-scale Software-Defined Networking (SDN). To achieve high resilience, an SDN switch can connect one master controller for normal operation and one slave controller that backup the function of the master controller. Once the master controller fails, one of the slave controllers will be assigned to switches to works as the new master controller. However, the inappropriate slave controller assignment may cause controller chain failure, where running out of the capacity of the assigned controller, even crash the entire network. In this paper, we propose a dynamic slave controller assignment that prevents the network crash by planning slave controller assignment ahead of the controller failures. We first describe the controller chain failure phenomenon: due to unreasonable slave controller assignment, the entire network may crash when one controller fails. To prevent the phenomenon, we formulate the slave controller assignment problem as a multi-objective mixed optimization problem that considers latency, load balancing and robustness, and prove its NP-complete complexity. We solve the problem with a dynamic slave controller assignment (DSCA) scheme. It firstly checks whether there are controller failures in state detection module, then completes the elastic slave assignment and generates a new slave assignment for switches in efficient slave assignment module. Finally, in role adjustment module, it changes the roles of some controllers and reconnects switches. Simulation results show our solution can decrease the worst case latency under controller failures by 35.1% averagely, and reduce the probability of network crash. (C) 2019 Elsevier B.V. All rights reserved.
Keyword:
Software-defined networking
Control plane
Multi-controller
Controller failure
Fault-tolerance
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
F
IF:
6.1
论文数:
6.8K
被引数:
2.3W
机构
引用论文
Defect structures in the brannerite-type vanadates. II. Mechanism of the solid-state synthesis of
PREAI
分享收藏
An autonomous 16 mm/sup 3/ solar-powered node for distributed wireless sensor networks用于分布式无线传感器网络的自治16毫米/sup3/太阳能节点
PREAI
分享收藏分享收藏On Reliability-optimized Controller Placement for Software-Defined Networks.png)
CHINA COMMUNICATIONS
CHINA COMMUNICATIONSIF3.1
PREAI
分享收藏
查看更多内容