单选题What will occur when a nonedge switch port that is configured for Rapid Spanning Tree does not receive a BPDU from its neighbor for three consecutive hello time intervals？（）ARSTP information is automatically aged out.BThe port sends a TCN to the root bridge.CThe port moves to listening state.DThe port becomes a normal spanning tree port.
单选题
What will occur when a nonedge switch port that is configured for Rapid Spanning Tree does not receive a BPDU from its neighbor for three consecutive hello time intervals？（）
A
RSTP information is automatically aged out.
B
The port sends a TCN to the root bridge.
C
The port moves to listening state.
D
The port becomes a normal spanning tree port.
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