RSTP isn't backward-compatible to 802.1d, so you cannot take advantage of its additional features unless it is running throughout your network.

Name: RSTP isn't backward-compatible to 802.1d, so you cannot take advantage of its additional features unless it is running throughout your network.
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Question

Quizplus · Accepted Answer

RSTP (Rapid Spanning Tree Protocol) is designed to be backward-compatible with the original Spanning Tree Protocol (802.1D), allowing networks that have both protocols to interoperate.

RSTP Isn't Backward-Compatible to 802