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Sun Ethernet Fabric Operating System

STP Administration Guide

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Document Information

Using This Documentation

Product Notes

Related Documentation

Acronyms and Abbreviations

CLI Command Modes

Feedback

Support and Accessibility

STP Overview

STP Topology Example

STP Overview

Bridge ID and Switch Priority

Root Switch Election

Configuring RSTP

Understanding RSTP

RSTP Overview

Port States

Port Roles

Rapid Convergence

Proposal Agreement Sequence

Topology Change and Topology Change Detection

Default STP Settings

Set Spanning Tree Compatibility to STP

Restore Spanning Tree Compatibility

Configuring Bridge Priority

Configure the Bridge Priority

Restore the Default Bridge Priority

Configuring STP Cost

STP Cost Overview

Configure the Cost

Restore the Default Cost

Configuring the STP Port Priority

STP Port Priority Overview

Port Priority Configuration Topology Example

Configure the Port Priority

Restore the Default Port Priority

Configuring the Spanning Tree Link Type

Spanning Tree Link Type Overview

Configure the Interface Link Type

Restore the Default Interface Link Type

Configuring the Spanning Tree Portfast Port

Spanning Tree Portfast Port Overview

Configure a Portfast Port

Restore the Default Portfast Port

Configuring Spanning Tree Timers

Spanning Tree Timers Overview

Configure Timers

Restore the Default Timer Values

Configuring the Pseudo Root ID

Configure the Pseudo Root ID

Display the Pseudo Root ID

Spanning Tree Status Overview

Display Spanning Tree Information for Active Ports

Display Detailed Spanning Tree Information

Display the Spanning Tree Port-Specification Configuration

Display a Summary of the Spanning Tree Information for the Configuration

Configuring MSTP

Specify MST Forward Time, Hello Time, and Max Age

Understanding MSTP

MSTP Overview

MST Region

IST, CIST, and CST

Operations in an MST Region

Hop Count

Default MSTP Settings

MSTP Configuration Guidelines

Configuring MSTP Modes

Set the Spanning Tree Operating Mode

Specify MST Mode Configurations

Configuring the Spanning Tree Switch Priority

Configure the Spanning Tree Switch Priority

Restore the Default Spanning Tree Priority

Configure MST Properties of an Interface

Restore the Default MSTP Priority

Configuring the Interval Between Generation of Configuration Messages

Configure the MST Interval Between Generation of Configuration Messages

Restore the Default Interval Between Generation of Configuration Messages

Configuring the Maximum Hop Count

Configure the Maximum Hop Count

Restore the Default Maximum Hop Count

Configuring the Pseudo Root ID

Configure the Pseudo Root ID

Display the Pseudo Root ID

Configuring Features Common to RSTP and MSTP

Clear Spanning Tree MSTP Counters

Configuring the Transit Hold Count

Configure the Transmit Hold Count

Restore the Default Transmit Hold Count Value

Configuring the Dynamic Path Cost

Dynamic Path Cost Topology Example

Configure the Dynamic Path Cost

Configure the Dynamic Path Cost in an Aggregate Port

Disable the Dynamic Path Cost Calculation

Configure the Dynamic Path Cost Lag Speed in an Aggregate Port

Disable the Dynamic Path Cost Lag Speed Calculation

Enable Spanning Tree Loop Guard

Show Spanning Tree Performance Data

Configuring Automatic Detection of Edge Devices or Bridges

Configure Automatic Detection of Edge Devices or Bridges

Disable Automatic Detection of Edge Devices or Bridges

Configuring the Restricted Role

Configure the Restricted Role

Disable the Restricted Role

Configuring the Topology Change

Enable the Topology Change

Disable the Topology Change

Restart the Protocol Migration Process

Configuring the Spanning Tree BPDU Receive Status

Configure the Spanning Tree BPDU Receive Status

Disable the Spanning Tree BPDU Receive Status

Configuring the Spanning Tree BPDU Transmit Status

Configure the Spanning Tree BPDU Transmit Status

Disable the Spanning Tree BPDU Transmit Status

Configuring the Spanning Tree L2GP Status

Configure the Spanning Tree L2GP Status

Display the Spanning Port Information

Display the MST Configuration and Status

Flow-Based Configurations

Topology After Configuring the Bridge Priority and Port Path Cost in RSTP

RSTP Configuration Guidelines

Default RSTP Settings

Configure the Topology

Topology Convergence for MSTP

MSTP Configuration Guidelines

Default MSTP Settings

Configure the Topology

Configure the Spanning Tree BPDU Transmit Status

If the BPDU transmit status on a port is disabled, no BPDUs are transmitted through that port.