Answer | In certain cases, it is best for a client to receive a particular IP address from the SBG6580-2 and always keep that address without having to manually configure it in the client. This can be accomplished by reserving an IP Address to a client's MAC address.  When the client disconnects and reconnects to the SBG6580-2, it will receive the IP address that has been reserved for it.
It is recommended to set up an IP Address Reserve for clients that are configured to use Port Forwarding or DMZ.  The IP Address reserve can be set up using the assigned IP address to the client or by using a custom IP address of choice.  When using a custom IP address the client under the Client list must be deleted first.  This document contains the following sections:
IP Address Reserve Setup
- Launch a Firefox or Safari browser.  Enter http://192.168.0.1 into the address box, and press the Enter key. Â
NOTE: A browser message on Chrome, Edge, Firefox, and Opera, may appear when accessing the Web Manager. The message includes 192.168.01 uses an unsupported protocol and ERR_SSL_VERSION_OR_CIPHER_MISMATCH. The Web Manager uses an earlier version of the TLS protocol and does not match the version allowed by the web browser.  Safari browsers on Apple PC and mobile devices are not impacted.  The workaround to access the Web Manager with a PC is to use the Firefox browser and set the TLS version to 1. For workaround instructions refer to article # 19435 - 192.168.0.1 uses an unsupported protocol.Â
 - A security or private risk alert may appear on the web browser advising users to proceed with caution when accessing the Web Manager. There is no risk in proceeding to the Web Manager. For instructions to bypass the alert screen, refer to article # 18181 - Alert Message for Web Manager Access.
 - On the Login page, enter admin or a customized username in the Username field.
 - Enter password or a customized password in the Password field.
NOTE: On later versions of the SBG6580-2, the Wi-Fi Security Key is used as the default admin password printed on the bottom white label. For assistance with Web Manager Access, refer to article # 18752 – SBG6580-2: Web Manager Access.
 - Click the Login button.  The Home page will appear.
 - Move the mouse cursor over Basic on the main menu and click the DHCP link on the sub-menu.  The Basic - DHCP page will appear.  Â
 - On the Basic - DHCP page, locate and copy the device's MAC Address, IP Address, and Host Name under the Client List section to reserve the IP Address.
 - Under the Reserve IP Address section, enter the copied MAC Address into the MAC Address field.
 - Enter the copied IP Address into the IP Address field.
 - Enter the copied Host Name into the Host Name field.
 - Click the Apply button.Â
 - Verify that the client is added to the Client List to confirm that the setup is complete.
 - To remove the IP Address reservation, click the radio button to select the client under Client List and then click the Delete button. Â
Custom IP Address Reserve Setup
- Launch a Firefox or Safari browser.  Enter http://192.168.0.1 into the address box, and press the Enter key. Â
NOTE: A browser message on Chrome, Edge, Firefox, and Opera, may appear when accessing the Web Manager. The message includes 192.168.01 uses an unsupported protocol and ERR_SSL_VERSION_OR_CIPHER_MISMATCH. The Web Manager uses an earlier version of the TLS protocol and does not match the version allowed by the web browser.  Safari browsers on Apple PC and mobile devices are not impacted.  The workaround to access the Web Manager with a PC is to use the Firefox browser and set the TLS version to 1. For workaround instructions refer to article # 19435 - 192.168.0.1 uses an unsupported protocol.Â
 - A security or private risk alert may appear on the web browser advising users to proceed with caution when accessing the Web Manager. There is no risk in proceeding to the Web Manager. For instructions to bypass the alert screen, refer to article # 18181 - Alert Message for Web Manager Access.
 - On the Login page, enter admin or a customized username in the Username field.
 - Enter password or a customized password in the Password field.
NOTE: On later versions of the SBG6580-2, the Wi-Fi Security Key is used as the default admin password printed on the bottom white label. For assistance with Web Manager Access, refer to article # 18752 – SBG6580-2: Web Manager Access.
 - Click the Login button.  The Home page will appear.
 - Move the mouse cursor over Basic on the main menu and click the DHCP link on the sub-menu.  The Basic - DHCP page will appear.  Â
 - On the Basic DHCP page, locate and copy the device's MAC Address under the Client List section to reserve the IP Address.
 - Click the radio Select button for the device.
 - Click the Delete button to remove the device from the DHCP pool.
 - Under the Reserve IP Address section, enter the copied MAC Address into the MAC Address field.
 - Enter the desired IP Address of choice into the IP Address field.
NOTE: In this example, 192.168.0.100Â IP Address was used.
 - Enter the desired Host Name into the Host Name field.
 - Click the Apply button.Â
 - Verify that the client is added to the Client List to confirm that the setup is complete.
 - To remove the IP Address reservation, click the radio button to select the client under Client List and then click the Delete button. Â
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