As previously stated, troubleshooting STP can be a very complex task. Because STP loops can bring down an entire network, it is important to understand exactly what is happening and quickly implement an appropriate solution, as in most cases, all you might have is nothing more than a few minutes. There are two primary reasons that result in STP protocol failure or issues. These are configuration errors and the loss of STP BDPUs. Additional causes also include MAC address table corruption, hardware and software issues and bugs, as well as switch resource utilization issues.
Designing and Implementing a Sound . . .
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