A new method for layer 2 loop prevention in software defined networks
A new method for layer 2 loop prevention in software defined networks
复制标题
软件定义网络中二层环路预防的新方法
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
R. Javidan
中科院分区：
文献类型：
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作者：
Esmaeil Amiri;R. Javidan
广播风暴是指在存在环路的情况下，由于广播流量导致的带宽饱和，并能迅速导致网络故障。在传统网络中，生成树协议STP （spanning tree protocol）用于防止二层环路。该协议是为分布式网络设计的。然而，软件定义网络（sdn）作为一种新的计算机网络体系结构，需要有一个新的范式。在SDN架构中，控制平面与数据平面解耦并集中实现，因此可以利用其全局视图找到更好的解决方案。本文介绍并评价了一种防止sdn环路的新方法。与STP相比，该方法阻塞的交换机端口更少，利用了更多的交换机容量，具有更好的性能。综合仿真结果表明了该方法的有效性。
Broadcast storm refers to the bandwidth saturation caused by broadcast traffic flows when a loop exists and it can quickly lead to the network failure. In legacy networks, spanning tree protocol (STP) is used to prevent loops in layer 2. This protocol is designed for distributed networks. However, for software defined networks (SDNs) as a new architecture for computer networks, it is necessary to have a new paradigm. In SDN architecture, control plane is decoupled from data plane and implemented centrally so it can be utilized to find a better solution using its global view. In this paper, a new method to prevent loop in SDNs is introduced and evaluated. The proposed method in comparison with STP, has better performance, because of blocking fewer switch ports and utilizing more capacity of the switches. The comprehensive simulation results showed the effectiveness of the proposed method.