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For questions about or involving network loops. For instance, you are troubleshooting a switching loop, where more than one device create a layer 2 loop or you are trying to fix a routing loop in your network.

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Switch uses Layer 2 Spanning Tree Protocol to ensures a loop free topology for any bridged Ethernet network. … So if yours IOT device will forward bridge protocol data unit (BPDU) accross, switch will maintain loop free topology. …
answered Feb 12 '17 by Datagram.Network