# Flow control

### 1. Summary

In this page you can edit the settings of the flow control.
You can enable/disable the flow control.
If the flow control is enabled, frame discarding can be controlled when a network is congested.

### 2. Top page

This is the top page for flow control.

#### 2.1. Flow control basic settings

- The current setting is shown as to whether the flow control is used.

- Press the "Setting" button to access a page where you can change the settings.

#### 2.2. Flow control settings

- The flow control setting is shown for each LAN port.

- Press the "Setting" button to access a page where you can change the settings of the selected LAN port.

- If you press the "Specify all" button, the settings can be changed for all LAN ports whose check box contains a check mark.

- If you press the "Return to defaults" button, the settings will be initialized for all LAN ports whose check box contains a check mark.

  - The default flow control setting for all ports is "Disabled".

- If the settings do not use the flow control for the entire system, flow control settings for each LAN port cannot be made.

### 3. Flow control basic settings page

In this page you can specify whether the flow control is used for the entire system.
Enter the settings, and then press the "Confirm" button.
If there are no mistakes in the setting confirmation screen, press the "OK" button.

#### 3.1. Flow control basic settings

- Flow control

  - Don’t use flow control

    - The flow control will be disabled for the entire system.

  - Use flow control

    - The flow control will be enabled for the entire system.

### 4. Flow control settings page

In this page you can specify whether the flow control is used for the selected interface.
Enter the settings, and then press the "Confirm" button.
If there are no mistakes in the setting confirmation screen, press the "OK" button.

#### 4.1. Flow control settings

- Port

  - The LAN port for which settings are made is shown.

- Flow control

  - Disabled

    - The flow control will be disabled for the selected interface.

  - Enabled

    - The flow control will be enabled for the selected interface.

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