- Download PDFs
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no-root-port
- Related Topics
- show spanning-tree bridge
- show spanning-tree interface
- Example: Configuring Root Protection to Enforce Root Bridge Placement in Spanning Trees on EX-series Switches
- Example: Configuring Network Regions for VLANs with MSTP on EX-series Switches
- Example: Configuring Faster Convergence and Improving Network Stability with RSTP on EX-series Switches
- Understanding VSTP for EX-series Switches
no-root-port
Syntax
- no-root-port;
Hierarchy Level
Release Information
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.
Description
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
configuration.
routing-control—To add this statement
to the configuration.