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Spanning Tree Protocol (General Facts (Priority Lower is Better, Default…
Spanning Tree Protocol
STP
STP and
PVSTP
States
Blocking
Listening
Learning
Forwarding
Disabled
Roles
Root
Designated
Non Designated
IEEE 802.1D
Other
Portfast
BPDU Guard
RSTP and
Rapid PVSTP
Roles
Root
Designated
Alternate
Backup
Disabled
IEEE 802.1w
States
Discarding
Learning
Forwarding
MSTP
IEEE 802.1s
Instances
IST
Roles
Root
Designated
Alternate
Backup
Default MSTP
MSTI
Roles
Root
Designated
Master
Alternate
Backup
General Facts
Priority Lower is Better
Default Priority 32768
Priority multiples of 4096
Converged is when all Switches are Sync