A network administrator is reviewing the layer 2 topology operational characteristics on a Cisco Catalyst switch block running Rapid PVST+. Which two statements accurately describe the port roles and operational state transitions of Rapid PVST+?
- An Alternate port receives BPDUs from neighboring switches and provides an alternate backup path toward the Root Bridge.Cevap
- Rapid PVST+ streamlines protocol port states to Discarding, Learning, and Forwarding, eliminating the separate Disabled, Blocking, and Listening states used in 802.1D.Cevap
- CA network engineer can set the global bridge priority to any arbitrary value such as 4100 to force root selection.
- DEnabling Spanning Tree PortFast on an inter-switch trunk port ensures immediate forwarding transition without risk of layer 2 loops.
Cevap
The two correct statements are that an Alternate port receives BPDUs from neighboring switches to act as a backup path to the Root Bridge, and that Rapid PVST+ simplifies port states into Discarding, Learning, and Forwarding.
Rapid PVST+ simplifies 802.1D port states into Discarding, Learning, and Forwarding while introducing the Alternate port role as a pre-calculated backup path to the Root Bridge that receives BPDUs from alternate neighboring switches.
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Rapid PVST+ Port Roles and Port State Operations
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