Explore the key features of Rapid PVST+ in Cisco networking, with a deep dive into the role of Portfast in optimizing network traffic for immediate server connectivity.
Table of Contents
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?
A. portfast
B. uplinkfast
C. BPDU guard
D. loop guard
Answer
A. portfast
Explanation
Rapid PVST+ (Rapid Per-VLAN Spanning Tree) is a spanning tree protocol that provides fast convergence and redundancy for Cisco switches. The portfast feature, when enabled on a switch port, immediately transitions the port to the forwarding state upon link up, bypassing the listening and learning states of the spanning tree protocol. This allows a connected server or end device to begin transmitting data as soon as the port becomes active, without having to wait for the spanning tree convergence process.
Uplinkfast is a feature that provides faster recovery from the failure of the root port, but it does not immediately send traffic to a connected server. BPDU guard shuts down a port if it receives BPDU packets, preventing loops, but it does not expedite traffic forwarding. Loop guard protects against unidirectional link failures, but also does not impact the immediate forwarding of traffic.
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