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Spanning-Tree Protocols for EX Series Switches

Junos® OS for EX Series Switches, Release 12.3

Overview
Configuration
Administration
Troubleshooting

Spanning Trees Overview

Understanding MSTP for EX Series Switches

Understanding RSTP for EX Series Switches

Understanding STP for EX Series Switches

Understanding VSTP for EX Series Switches

Understanding BPDU Protection for STP, RSTP, and MSTP on EX Series Switches

Understanding Loop Protection for STP, RSTP, VSTP, and MSTP on EX Series Switches

Understanding Root Protection for STP, RSTP, VSTP, and MSTP on EX Series Switches

Related Documentation

EX Series
EX Series Switch Software Features Overview

Spanning Trees Overview
Understanding MSTP for EX Series Switches Understanding RSTP for EX Series Switches Understanding STP for EX Series Switches Understanding VSTP for EX Series Switches Understanding BPDU Protection for STP, RSTP, and MSTP on EX Series Switches Understanding Loop Protection for STP, RSTP, VSTP, and MSTP on EX Series Switches Understanding Root Protection for STP, RSTP, VSTP, and MSTP on EX Series Switches

Spanning Trees Overview

Understanding MSTP for EX Series Switches

Understanding RSTP for EX Series Switches

Understanding STP for EX Series Switches

Understanding VSTP for EX Series Switches

Understanding BPDU Protection for STP, RSTP, and MSTP on EX Series Switches

Understanding Loop Protection for STP, RSTP, VSTP, and MSTP on EX Series Switches

Understanding Root Protection for STP, RSTP, VSTP, and MSTP on EX Series Switches

Configuration Examples
Example: Configuring Faster Convergence and Improving Network Stability with RSTP on EX Series Switches Example: Configuring Network Regions for VLANs with MSTP on EX Series Switches Example: Configuring BPDU Protection on Edge Interfaces to Prevent STP Miscalculations on EX Series Switches Example: Configuring BPDU Protection on Interfaces to Prevent STP Miscalculations on EX Series Switches Example: Configuring Loop Protection to Prevent Interfaces from Transitioning from Blocking to Forwarding in a Spanning Tree on EX Series Switches Example: Configuring Root Protection to Enforce Root Bridge Placement in Spanning Trees on EX Series Switches

Configuration Examples

Example: Configuring Faster Convergence and Improving Network Stability with RSTP on EX Series Switches

Example: Configuring Network Regions for VLANs with MSTP on EX Series Switches

Example: Configuring BPDU Protection on Edge Interfaces to Prevent STP Miscalculations on EX Series Switches

Example: Configuring BPDU Protection on Interfaces to Prevent STP Miscalculations on EX Series Switches

Example: Configuring Loop Protection to Prevent Interfaces from Transitioning from Blocking to Forwarding in a Spanning Tree on EX Series Switches

Example: Configuring Root Protection to Enforce Root Bridge Placement in Spanning Trees on EX Series Switches

Configuration Tasks
Configuring STP (CLI Procedure) Configuring Spanning-Tree Protocols (J-Web Procedure) Configuring VSTP (CLI Procedure) Configuring BPDU Protection on an Interface (CLI Procedure) Unblocking an Interface That Receives BPDUs in Error (CLI Procedure)

Configuration Tasks

Configuring STP (CLI Procedure)

Configuring Spanning-Tree Protocols (J-Web Procedure)

Configuring VSTP (CLI Procedure)

Configuring BPDU Protection on an Interface (CLI Procedure)

Unblocking an Interface That Receives BPDUs in Error (CLI Procedure)

Configuration Statements
[edit protocols] Configuration Statement Hierarchy on EX Series Switches [edit protocols mstp] Configuration Statement Hierarchy on EX Series Switches [edit protocols rstp] Configuration Statement Hierarchy on EX Series Switches [edit protocols stp] Configuration Statement Hierarchy on EX Series Switches [edit protocols vstp] Configuration Statement Hierarchy on EX Series Switches block (Spanning Trees) bpdu-block bpdu-block-on-edge bpdu-timeout-action (Spanning Trees) bridge-priority (Spanning Trees) configuration-name (Spanning Trees) cost (Spanning Trees) disable (BPDU Block) disable (Spanning Trees) disable-timeout (Spanning Trees) drop (BPDU Block) edge (Spanning Trees) force-version (Spanning Trees) forward-delay (Spanning Trees) hello-time (Spanning Trees) interface (BPDU Block) interface (Spanning Trees) log (Spanning Trees) max-age (Spanning Trees) max-hops (Spanning Trees) mode (Spanning Trees) msti (Spanning Trees) mstp (Spanning Trees) no-root-port (Spanning Trees) priority (Spanning Trees) revision-level (Spanning Trees) rstp (Spanning Trees) shutdown (BPDU Block) stp (Spanning Trees) traceoptions (Spanning Trees) vlan (Spanning Trees) vlan (VSTP) vstp

Configuration Statements

[edit protocols] Configuration Statement Hierarchy on EX Series Switches

[edit protocols mstp] Configuration Statement Hierarchy on EX Series Switches

[edit protocols rstp] Configuration Statement Hierarchy on EX Series Switches

[edit protocols stp] Configuration Statement Hierarchy on EX Series Switches

[edit protocols vstp] Configuration Statement Hierarchy on EX Series Switches

block (Spanning Trees)

bpdu-block

bpdu-block-on-edge

bpdu-timeout-action (Spanning Trees)

bridge-priority (Spanning Trees)

configuration-name (Spanning Trees)

cost (Spanning Trees)

disable (BPDU Block)

disable (Spanning Trees)

disable-timeout (Spanning Trees)

drop (BPDU Block)

edge (Spanning Trees)

force-version (Spanning Trees)

forward-delay (Spanning Trees)

hello-time (Spanning Trees)

interface (BPDU Block)

interface (Spanning Trees)

log (Spanning Trees)

max-age (Spanning Trees)

max-hops (Spanning Trees)

mode (Spanning Trees)

msti (Spanning Trees)

mstp (Spanning Trees)

no-root-port (Spanning Trees)

priority (Spanning Trees)

revision-level (Spanning Trees)

rstp (Spanning Trees)

shutdown (BPDU Block)

stp (Spanning Trees)

traceoptions (Spanning Trees)

vlan (Spanning Trees)

vlan (VSTP)

vstp

Routine Monitoring
Monitoring Spanning-Tree Protocols

Operational Commands
clear ethernet-switching bpdu-error clear spanning-tree statistics (for EX Series switches only) clear spanning-tree statistics show spanning-tree bridge (for EX Series switches only) show spanning-tree bridge show spanning-tree interface (for EX Series switches only) show spanning-tree interface show spanning-tree mstp configuration (for EX Series switches only) show spanning-tree mstp configuration show spanning-tree statistics (for EX Series switches only) show spanning-tree statistics

Operational Commands

clear ethernet-switching bpdu-error

clear spanning-tree statistics (for EX Series switches only)

clear spanning-tree statistics

show spanning-tree bridge (for EX Series switches only)

show spanning-tree bridge

show spanning-tree interface (for EX Series switches only)

show spanning-tree interface

show spanning-tree mstp configuration (for EX Series switches only)

show spanning-tree mstp configuration

show spanning-tree statistics (for EX Series switches only)

show spanning-tree statistics