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Layer 2 Services — Spanning-Tree Protocol Options

Junos® OS Documentation, Release 12.2

Overview
Configuration
Administration
Troubleshooting

Spanning-Tree Protocol Options

Loop Protection for Spanning-Tree Instance Interfaces

Root Protection for Spanning-Tree Instance Interfaces

BPDU Protection for Spanning-Tree Instance Interfaces

VPLS Multihomed Layer 2 Ring and MPLS Infrastructure Overview

VPLS Multihomed Layer 2 Ring and MPLS Infrastructure Topology

Layer 2 Protocol Tunneling Through a Network

Spanning-Tree Protocol Options
Loop Protection for Spanning-Tree Instance Interfaces Root Protection for Spanning-Tree Instance Interfaces BPDU Protection for Spanning-Tree Instance Interfaces VPLS Multihomed Layer 2 Ring and MPLS Infrastructure Overview VPLS Multihomed Layer 2 Ring and MPLS Infrastructure Topology Layer 2 Protocol Tunneling Through a Network

Spanning-Tree Protocol Options

Loop Protection for Spanning-Tree Instance Interfaces

Root Protection for Spanning-Tree Instance Interfaces

BPDU Protection for Spanning-Tree Instance Interfaces

VPLS Multihomed Layer 2 Ring and MPLS Infrastructure Overview

VPLS Multihomed Layer 2 Ring and MPLS Infrastructure Topology

Layer 2 Protocol Tunneling Through a Network

Configuration Guidelines for Spanning-Tree Protocol Options
Loop Protection for a Spanning-Tree Instance Interface Root Protect for a Spanning-Tree Instance Interface BPDU Protection for Individual Spanning-Tree Instance Interfaces BPDU Protection on All Edge Ports of the Bridge VPLS Multihoming: Priority of the Backup Bridge VPLS Multihoming: Hold Time Before Switching to Primary Priority VPLS Multihoming: System Identifier for Bridges in the Ring VPLS Multihoming: Bridge Flush of MAC Cache

Configuration Guidelines for Spanning-Tree Protocol Options

Loop Protection for a Spanning-Tree Instance Interface

Root Protect for a Spanning-Tree Instance Interface

BPDU Protection for Individual Spanning-Tree Instance Interfaces

BPDU Protection on All Edge Ports of the Bridge

VPLS Multihoming: Priority of the Backup Bridge

VPLS Multihoming: Hold Time Before Switching to Primary Priority

VPLS Multihoming: System Identifier for Bridges in the Ring

VPLS Multihoming: Bridge Flush of MAC Cache

Configuration Tasks for Spanning-Tree Protocol Options
Loop Protection for a Spanning-Tree Instance Interface Enabling Root Protect for a Spanning-Tree Instance Interface BPDU Protection for Individual Ports BPDU Protection on All Edge Ports Topology Change Actions for Global Spanning Tree Behavior Topology Change Actions for VLAN Spanning Tree Behavior

Configuration Tasks for Spanning-Tree Protocol Options

Loop Protection for a Spanning-Tree Instance Interface

Enabling Root Protect for a Spanning-Tree Instance Interface

BPDU Protection for Individual Ports

BPDU Protection on All Edge Ports

Topology Change Actions for Global Spanning Tree Behavior

Topology Change Actions for VLAN Spanning Tree Behavior

Configuration Guidelines for Layer 2 Protocol Tunneling
MAC Address Rewriting Enabled for Layer 2 Protocol Tunneling Layer 2 Protocol Tunnel Interface Layer 2 Protocol to be Tunneled

Configuration Guidelines for Layer 2 Protocol Tunneling

MAC Address Rewriting Enabled for Layer 2 Protocol Tunneling

Layer 2 Protocol Tunnel Interface

Layer 2 Protocol to be Tunneled

Configuration Task for Layer 2 Protocol Tunneling
Configuring Layer 2 Protocol Tunneling

Spanning-Tree Protocol Options and Tunneling Examples
Enabling Loop Protection Configuring VPLS Root Topology Change Actions

Spanning-Tree Protocol Options and Tunneling Examples

Enabling Loop Protection

Configuring VPLS Root Topology Change Actions

Configuration Statements for Spanning-Tree Protocols
[edit protocols mstp] Hierarchy Level [edit protocols rstp] Hierarchy Level [edit protocols vstp] Hierarchy Level • backup-bridge-priority • bpdu-block-on-edge • bpdu-timeout-action • no-root-port • priority-hold-time • system-id • vpls-flush-on-topology-change [edit protocols layer2-control] Hierarchy Level • bpdu-block • disable-timeout • interface (BPDU Blocking) • interface (Layer 2 Protocol Tunneling)

Configuration Statements for Spanning-Tree Protocols

[edit protocols mstp] Hierarchy Level

[edit protocols rstp] Hierarchy Level

[edit protocols vstp] Hierarchy Level

• backup-bridge-priority

• bpdu-block-on-edge

• bpdu-timeout-action

• no-root-port

• priority-hold-time

• system-id

• vpls-flush-on-topology-change

[edit protocols layer2-control] Hierarchy Level