D-Link DES-3250TG User Manual page 222

DES-3250TG Layer 2 Fast Ethernet Switch User's Guide
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.
A port in the listening state does the following:
•
Discards frames received from the network segment to
which it is attached.
•
Discards packets sent from another port on the switch
for forwarding.
•
Does not add addresses to its forwarding database
•
Receives BPDUs and directs them to the CPU.
•
Processes BPDUs received from the CPU.
•
Receives and
messages.
responds to network
214
management