I need some information about RSTP
If the port state is blocking, discarding alternate .
Should BPDU be sent to external ports? I cant see any BPDU in wireshark if the port states Alternate,Discarding mode.
Network Engineering Stack Exchange is a question and answer site for network engineers. It only takes a minute to sign up.Sign up to join this community
All the switches in network intially sends and receives BPDU messages when connected in network and election process starts . Switch Ports enters blocking state during the time of election process, when a switch receives a BPDU on a port that indicates a better path to the Root Switch Root Bridge and if a port is not a Root Port or a Designated Port.
The port in the blocking state does not participate in sending any BPDU message it's only in listene for BPDU messages nor it does not sends frame forwarding and also discards frames received from the attached network segment. During blocking state, the port is only listening to and processing BPDUs on its interfaces. After 20 seconds, the switch port will changes its state from blocking state to listening state.