Disabled State; Summary Of Port States; Synchronization Of Port Roles - Cisco AP775A - Nexus Converged Network Switch 5010 Configuration Manual

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Information About Rapid PVST+

• Forwards frames switched from another port for forwarding.

• Incorporates the end station location information into its address database.

• Receives BPDUs and directs them to the system module.

• Processes BPDUs received from the system module.

• Receives and responds to network management messages.

Disabled State

A LAN port in the disabled state does not participate in frame forwarding or STP. A LAN port in the disabled

state is virtually nonoperational.

A disabled LAN port performs as follows:

• Discards frames received from the attached segment.

• Discards frames switched from another port for forwarding.

• Does not incorporate the end station location into its address database. (There is no learning, so there is

• Does not receive BPDUs from neighbors.

• Does not receive BPDUs for transmission from the system module.

The following table lists the possible operational and Rapid PVST+ states for ports and the corresponding

inclusion in the active topology.

Table 16: Port State Active Topology

Operational Status

When the switch receives a proposal message on one of its ports and that port is selected as the new root port,

Rapid PVST+ forces all other ports to synchronize with the new root information.

The switch is synchronized with superior root information received on the root port if all other ports are

synchronized. An individual port on the switch is synchronized if either of the following applies:

• That port is in the blocking state.

• It is an edge port (a port configured to be at the edge of the network).

no address database update.)

Cisco Nexus 5000 Series Switch CLI Software Configuration Guide

Disabled State

Is Port Included in the Active

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