Spanning Tree Protocol

Does not transmit BPDUs received from the processor.

Receives and responds to network management messages.

Figure D-1: Blocking state

Listening State

The listening state is the first transition for a port from the blocking state. Listening is an opportunity for the switch to receive BPDUs that may tell the switch that the port should not continue to transition to the forwarding state, but should return to the blocking state (that is, a different port is a better choice).

There is no address learning or packet forwarding from a port in the listening state.

D-2

Compaq ProLiant BL p-Class GbE Interconnect Switch User Guide