A Novel Passive L1/L2 Edge Loop Detection Observing MAC addresses of L3 Core Switches
A Novel Passive L1/L2 Edge Loop Detection Observing MAC addresses of L3 Core Switches
复制标题
观察L3核心交换机MAC地址的新型被动L1/L2边缘环路检测
DOI：
10.1109/compsac54236.2022.00160
复制
发表时间：
2022
期刊：
影响因子：
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通讯作者：
Ohmori Motoyuki
中科院分区：
文献类型：
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作者：
藤田 結海;津川 翔;Ohmori Motoyuki
网络中的L1和/或L2环路可能会导致拥塞并导致通信故障。因此，为了消除环路，快速准确地检测环路并定位其原点是很重要的。针对这一问题，本文提出了一种新的基于边缘交换机边缘端口的被动环路检测方法。建议检测的基本思想的灵感来自于L3核心交换机的MAC地址永远不应在边缘端口上被观察到这一性质。然后，通过始终接受易于部署的MAC地址身份验证来观察MAC地址。因此，所提出的检测可以准确地定位形成环路的边缘端口，并且避免向网络运营商通知环路的失败。此外，与现有的主动检测方法相比，所提出的检测方法可以更好地降低边缘交换机的负载。我们在实际校园网中的评估表明，即使在现有方法无法检测到环路的情况下，该方法也能检测到环路。
A L1 and/or L2 loop in a network may cause congestion and incur communication failures. It is, therefore, important to quickly and accurately detect a loop and locate its origin in order to eliminate the loop. To address this issue, this paper proposes a novel passive loop detection on edge ports of edge switches where end users' routers or terminals are accom-modated. The basic idea of the proposed detection is inspired by the nature that a MAC address of a L3 core switch should never be observed on an edge port. The MAC address is then observed by always-accepting MAC address authentication that can be easily deployed. The proposed detection can, therefore, accurately locate an edge port where a loop is formed, and avoid a failure to notify a network operator of a loop. In addition, the proposed detection can reduce a load on an edge switch more than the existing active detecting methods. Our evaluations in the real campus network have shown that the proposed method can detect the loop even where the existing methods cannot.