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no-root-port

Syntax

no-root-port;

Hierarchy Level

[edit protocols mstp interface (all | interface-name)],[edit protocols rstp interface (all | interface-name)],[edit protocols stp interface (all | interface-name)],[edit protocols vstp vlan vlan-id interface (all | interface-name)]

Release Information

Statement introduced in Junos OS Release 11.1 for the QFX Series.

Description

Configure an interface to be a spanning tree designated port. If the bridge receives more 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 more STP BPDUs on the root-protected interface, interface traffic is no longer blocked.

Required Privilege Level

routing—To view this statement in the configuration.
routing-control—To add this statement to the configuration.