200-301 · Question #1517
Which Rapid PVST+ feature should be configured on a switch port to immediately send traffic to a connected server as soon as it is active?
The correct answer is A. portfast. To enable a switch port connected to a server to immediately enter the forwarding state, bypassing standard STP delays, the portfast feature should be configured.
Question
Which Rapid PVST+ feature should be configured on a switch port to immediately send traffic to a connected server as soon as it is active?
Options
- Aportfast
- Buplinkfast
- CBPDU guard
- Dloop guard
How the community answered
(53 responses)- A92% (49)
- B4% (2)
- C2% (1)
- D2% (1)
Why each option
To enable a switch port connected to a server to immediately enter the forwarding state, bypassing standard STP delays, the portfast feature should be configured.
PortFast immediately transitions a switch port to the forwarding state upon activation, skipping the Spanning Tree Protocol (STP) listening and learning states, which significantly reduces the time for an end device like a server to become active on the network.
UplinkFast is an STP convergence feature designed for switches with redundant links to an upstream device, not for speeding up end-device connectivity.
BPDU guard is a security feature that shuts down a port if it receives a Bridge Protocol Data Unit (BPDU), preventing unauthorized switches from affecting the STP topology.
Loop guard is an STP feature that puts a port into a loop-inconsistent state if BPDUs are no longer received, helping to prevent potential forwarding loops.
Concept tested: Rapid PVST+ PortFast feature
Source: https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3560/software/release/12-2_52_se/configuration/guide/swstp.html#wp1074550
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