Which two spanning-tree port states does RSTP combine to allow faster convergence? (Choose two.)

Questions BankWhich two spanning-tree port states does RSTP combine to allow faster convergence? (Choose two.)
Which two spanning-tree port states does RSTP combine to allow faster convergence? (Choose two.) 1ITExamAnswers Staff asked 6 months ago
Question:
Which two spanning-tree port states does RSTP combine to allow faster convergence? (Choose two.)

  • blocking
  • listening
  • learning
  • forwarding
  • discarding

Explanation: There are only three port states left in RSTP that correspond to the three possible operational states. The 802.1D blocking, and listening states are merged into the 802.1w discarding state.

* Discarding – the port does not forward frames, process received frames, or learn MAC addresses – but it does listen for BPDUs (like the STP blocking state)
* Learning – receives and transmits BPDUs and learns MAC addresses but does not yet forward frames (same as STP).
* Forwarding – receives and sends data, normal operation, learns MAC address, receives and transmits BPDUs (same as STP).

STP State (802.1d) RSTP State (802.1w)
Blocking Discarding
Listening Discarding
Learning Learning
Forwarding Forwarding

Although the learning state is also used in RSTP but it only takes place for a short time as compared to STP. RSTP converges with all ports either in forwarding state or discarding state.

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