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BPDU protectionLink

command

set protocol rstp interface ge-0/0/0 edge

set protocol rstp bpdu-block-on-edge   # OUTGOING :  don't send RSTP's BPDU on access port / Edge port



layer2-control

set protocol layer2-control bpdu-block interface ge-0/0/0   # INCOMING block STP / BPDU packets on access port/ Edge port

set protocol layer2-control disable-timeout 3600 [  1 hour 

show commands
show commands

show spanning-tree interface ge-0/0/0 

>>> look for

port State: FWD or BLCK

Physical link state: Up or Down

BPDU Erro: None or Detected

clear BPDU error
clear BPDU errorclear error bpdu interface ge-0/0/0




Loop Protection
stop to switch to from alternate role (+ blocking state)  to designated role ( + fwd state ) 

set protocol rstp interface ge-0/1/0 bpdu-timeout-action block

set protocol rstp interface ge-0/1/1 bpdu-timeout-action block



Root Protection
to avoid unwanted STP topology changes and
root bridge placement

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