Dell PowerEdge FN I/O Module Configuration Guide 9.10(0.0)

RSTP can cause temporary port state blocking and may cause topology changes after link or node failures. Spanning tree topology changes are distributed to the entire layer 2 network, which can cause a network-wide flush of learned MAC and ARP addresses, requiring these addresses to be re-learned. However, enabling RSTP can detect potential loops caused by non-system issues such as cabling errors or incorrect configurations. To minimize possible topology changes after link or node failure, RSTP is useful for potential loop detection. Configure RSTP using the following specifications.