Statement introduced in JUNOS Release 9.1 for EX Series switches.
Statement updated in JUNOS Release 9.4 for EX Series switches to add VSTP support.
Configure an interface to be a spanning tree designated port. If the bridge receives superior STP bridge protocol data units (BPDUs) on a root-protected interface, that interface transitions to a root-prevented STP state (inconsistency state) and the interface is blocked. This blocking prevents a bridge that should not be the root bridge from being elected the root bridge. When the bridge stops receiving superior STP BPDUs on the root-protected interface, interface traffic is no longer blocked.
Required Privilege Level
routing—To view this statement in the
routing-control—To add this statement to the configuration.