# Spanning tree

### 1. Summary

This page is for configuring the spanning tree.
If you want to use the spanning tree function, you needto enable both the system settings and the interface settings.
If the spanning tree is disabled in the system settings, the spanning tree does not work on all interfaces regardless of theinterface settings.

### 2. Top page

This is the top page for the spanning tree.

#### 2.1. System settings

- Displays the spanning tree setting for the system.

- Press the "Setting" button to display the page for configuring the system settings.

#### 2.2. Interface settings

- Displays the spanning tree setting for each interface.

- The table items are explained below.

  - I/F

    - Displays the interface name.

  - Spanning tree function

    - Displays whether the spanning tree function is enabled or not on the interface.

- Press the "Setting" button to display the page where you can change the settings of the selected interface.

- If you press the "Specify all" button, the settings can be changed for all interfaces whose check box is selected.

- If you press the "Return to defaults" button, the settings will be initialized on all interfaces whose check boxes are selected.

### 3. System settings page

This page is for configuring the spanning tree for the system.
Enter the settings, and then press the "Confirm" button.
If there are no mistakes in the input content of the confirmation screen, press the "OK" button.

#### 3.1. System settings

- Spanning tree function

  - Select the spanning tree function setting from the following items.

    - Use

    - Don’t use

### 4. Interface settings page

This page is for configuring the spanning tree for the interface.
Enter the settings, and then press the "Confirm" button.
If there are no mistakes in the input content of the confirmation screen, press the "OK" button.

#### 4.1. Interface settings

- Applicable interface

  - Displays the name of the interface whose settings are to be changed.

- Spanning tree function

  - Select the spanning tree function setting from the following items.

    - Use

    - Don’t use

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