- play_arrow Overview
- play_arrow Overview
- J-Web User Interface for EX Series Switches Overview
- J-Web Interface—Application Package
- Understanding J-Web User Interface Sessions
- Dashboard for EX Series Switches
- Understanding J-Web Configuration Tools
- Understand Alarm Types and Severity Levels on EX Series Switches
- Using the Commit Options to Commit Configuration Changes (J-Web Procedure)
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- play_arrow Configuration
- play_arrow Starting J-Web
- play_arrow J-Web Configuration Tools
- play_arrow System Basics Configuration
- Connecting and Configuring an EX Series Switch (J-Web Procedure)
- Configuring Date and Time for the EX Series Switch (J-Web Procedure)
- Configuring System Identity for an EX Series Switch (J-Web Procedure)
- Configuring Management Access for the EX Series Switch (J-Web Procedure)
- Generating SSL Certificates to Be Used for Secure Web Access (EX Series Switch)
- Rebooting or Halting the EX Series Switch (J-Web Procedure)
- play_arrow Class of Service Configuration
- Defining CoS Drop Profiles (J-Web Procedure)
- Defining CoS Classifiers (J-Web Procedure)
- Defining CoS Code-Point Aliases (J-Web Procedure)
- Assigning CoS Components to Interfaces (J-Web Procedure)
- Defining CoS Forwarding Classes (J-Web Procedure)
- Defining CoS Rewrite Rules (J-Web Procedure)
- Defining CoS Schedulers (J-Web Procedure)
- Defining CoS Scheduler Maps (J-Web Procedure)
- play_arrow Security and Management Configuration
- play_arrow Routing Policies and Packet Filtering Configuration
- play_arrow Ethernet Switching Configuration
- play_arrow Interfaces
- play_arrow Configuring Services
- play_arrow Configuring Layer 3 Protocols
- play_arrow Configuring Real-Time Performance Monitoring
- play_arrow Software Installation and Upgrades
- play_arrow Configuration, Files, Users, Licenses, and Product Registration
- Managing Configuration Files Through the Configuration History (J-Web Procedure)
- Setting or Deleting the Rescue Configuration (J-Web Procedure)
- Uploading a Configuration File (J-Web Procedure)
- Managing Log, Temporary, and Crash Files on the Switch (J-Web Procedure)
- Managing Users (J-Web Procedure)
- Managing Licenses for the EX Series Switch (J-Web Procedure)
- Registering the EX Series Switch with the J-Web Interface
- Generating Support Information Reports for EX Series Switches Using the J-Web Interface
- play_arrow Virtual Chassis Configuration
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- play_arrow Administration
- play_arrow Software, Files, Licenses, Logs
- Uploading a Configuration File (J-Web Procedure)
- Managing Configuration Files Through the Configuration History (J-Web Procedure)
- Setting or Deleting the Rescue Configuration (J-Web Procedure)
- Updating J-Web Interface on EX Series Switches (J-Web Procedure)
- Upgrading Junos OS on EX Series Switches (J-Web Procedure)
- Managing Licenses for the EX Series Switch (J-Web Procedure)
- Rebooting or Halting the EX Series Switch (J-Web Procedure)
- Managing Log, Temporary, and Crash Files on the Switch (J-Web Procedure)
- Registering the EX Series Switch with the J-Web Interface
- Generating Support Information Reports for EX Series Switches Using the J-Web Interface
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- play_arrow Troubleshooting
- play_arrow Troubleshooting Task
- play_arrow FAQ
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Monitoring Spanning Tree Protocols on Switches
Purpose
This topic applies only to the J-Web Application package.
Use the monitoring feature to view status and information about the spanning-tree protocol parameters on your EX Series switch.
Action
To display spanning-tree protocol parameter details in the J-Web interface, select Monitor > Switching > STP.
To display spanning-tree protocol parameter details in the CLI, enter the following commands:
show spanning-tree interfaceshow spanning-tree bridge
Meaning
Table 1 summarizes the spanning-tree protocol parameters.
| Field | Values |
|---|---|
Bridge Parameters | |
Context ID | An internally generated identifier. |
Enabled Protocol | Spanning-tree protocol type enabled. |
Root ID | Bridge ID of the elected spanning-tree root bridge. The bridge ID consists of a configurable bridge priority and the MAC address of the bridge. |
Root cost | Calculated cost to reach the root bridge from the bridge where the command is entered. |
Root port | Interface that is the current elected root port for this bridge. |
Bridge ID | Locally configured bridge ID. |
Hello time | The time for which the bridge interface remains in the listening or learning state. |
Forward delay | The time for which the bridge interface remains in the listening or learning state before transitioning to the forwarding state. |
Extended System ID | The system ID. |
Inter Instance ID | An internally generated instance identifier. |
Maximum age | Maximum age of received bridge protocol data units (BPDUs). |
Number of topology changes | Total number of spanning-tree protocol topology changes detected since the switch last booted. |
Spanning Tree Interface Details | |
Interface Name | Interface configured to participate in the spanning-tree protocol instance. |
Port ID | Logical interface identifier configured to participate in the spanning-tree protocol instance. |
Designated Port ID | Port ID of the designated port for the LAN segment to which the interface is attached. |
Designated Bridge ID | ID of the designated bridge to which the interface is attached. |
Port Cost | Configured cost for the interface. |
Port State | Spanning-tree protocol port state:
|
Role | MSTP or RSTP port role, Designated (DESG), backup (BKUP), alternate (ALT), or root. |
Spanning Tree Statistics of Interface | |
Interface | Interface for which statistics is being displayed. |
BPDUs Sent | Total number of BPDUs sent. |
BPDUs Received | Total number of BPDUs received. |
Next BPDU Transmission | Number of seconds until the next BPDU is scheduled to be sent. |
