Preventing Rogue Switches in Network

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The situation described in the question is a classic example of a Layer 2 network loop, which can cause significant disruptions to network performance and stability. One way to prevent this from happening is by using a feature called BPDU control.

BPDU (Bridge Protocol Data Unit) is a message that switches send to each other to negotiate the root bridge in a spanning tree topology. In a properly functioning network, only the switches designated as the root bridge and its backup should be sending BPDU messages. If a rogue switch starts sending BPDU messages, it can potentially become the root bridge, leading to network loops and other issues.

BPDU control is a feature that allows network administrators to specify which ports on a switch can send or receive BPDU messages. By configuring BPDU control, administrators can ensure that only authorized switches are able to participate in the spanning tree topology, preventing rogue switches from causing network loops.

In addition to BPDU control, there are other features that can help prevent network loops, such as root protection and loop protection. Root protection prevents unauthorized switches from becoming the root bridge by blocking any switch that tries to claim the role. Loop protection helps detect and prevent Layer 2 loops by shutting down ports that receive excessive traffic.

Storm control, on the other hand, is a feature that helps prevent network flooding caused by broadcast, multicast, or unicast storms. While storm control can help improve network performance and stability, it does not directly address the issue of rogue switches and network loops.

In summary, while all of the features listed in the question can be useful in preventing network issues, BPDU control is the most relevant to the scenario described, as it specifically addresses the problem of rogue switches participating in the spanning tree topology.