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BPDU protection	Link

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


Loop Protection	in case of none responsive neighbor , no hello BPDU >>> wait until hello BPDU comeback
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	Link
to avoid unwanted STP topology changes and root bridge placement
per interface ( on the Root bridge and backup root bridge)	set interface ge-0/0/6 no-root-port set interface ge-0/0/7 no-root-port
if offender detected go in blocking state	set protocol rstp interface ge-0/0/6 bpdu-timeout-action block set protocol rstp interface ge-0/0/7 bpdu-timeout-action block
offender switch the attached local port will be put in	Disable Role ( blocking state )
	show spanning-tree interface ge-0/0/6 detail

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