Updated Date: 04/27/2026
Prerequisites
Before you install or upgrade the F5OS software on your system:
- Ensure that you complete or verify the listed prerequisites for installation/upgrade tasks.
- Verify that your network settings are configured.
- Back up your system and tenant configurations.
- Export your backups to a safe, off-unit location.
- Upload system image files to the system before the scheduled maintenance window to minimize the time needed to upgrade.
- Upload tenant image files to all tenants before the scheduled maintenance window to minimize the time needed to upgrade.
- Check the health and availability of virtual servers and pool members to determine their status before the upgrade.
- See the “Migrate system configuration from one system to another from the CLI” section of the F5 rSeries Systems: Administration and Configuration guide in the techdocs.f5.com.
This lists a high-level overview of tasks that you should complete before you install or upgrade the F5OS software on your rSeries system.
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Task |
Action |
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Configure the front-panel management port on the system. |
For more information, see the platform guide for your rSeries platform at techdocs.f5.com. |
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Connect the system to a serial console server. |
Use these default serial port settings:- Baud rate: 19200
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Configure basic management settings. |
For more information, see the Network settings reference section. |
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Verify that an rsync server is reachable from the system for import of installation images onto the system. |
For more information, see the rsync documentation (rsync.samba.org). |
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Update/reactivate your system license, if needed, to ensure that you have a valid service check date. |
For more information, see K7727: License activation may be required before a software upgrade for BIG-IP. |
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Get a USB flash drive (minimum 8GB); only needed if using the USB method for performing a clean installation. |
Verify that the drive is fully seated and flush in the USB port.Note: For security purposes, the USB port on the system is disabled by default. You can use Always-On Management (AOM) to enable the front panel USB port. For more information about AOM, see the platform guide for your rSeries platform at techdocs.f5.com. |
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Verify that an external PXE server is reachable from the system; this is only needed if you are using the PXE server method for performing a clean installation. |
The external PXE server must provide TFTP, DHCP, and HTTP services. The PXE server must be on the same network segment as the F5 rSeries system’s management port. |
Before you perform a software installation/upgrade, verify that you have configured network settings by logging in to the system from a management console using an admin account and running these commands on the CLI. When you log in to the system, you are in user mode. Before you can complete configuration tasks, you must first change to config mode by typing config. You can type a question mark (?) or press the Tab key to see possible command completions in the CLI.
Important: Be sure to commit all changes.
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Task |
Configuration example |
Verify configuration |
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Enable DHCPImportant: If you do not enable DHCP, you must manually configure the system IP address, prefix, gateway, and DNS. |
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Configure a static IPv4 management address |
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Configure a prefix length for a static IPv4 management address |
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Configure a gateway for a static IPv4 address |
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Configure a static IPv6 management address |
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Configure a prefix length for a static IPv6 management address |
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Configure a gateway for a static IPv6 address |
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Configure an IPv4 DNS server |
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Configure an NTP server |
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Creating a backup of your rSeries system is highly recommended, as it helps ensure that your active configuration files are retained, and you can restore from a known, stable environment if your upgrade is unsuccessful.
Before you perform an upgrade, it is a good idea to save and export a backup of the system configuration from the CLI.
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Log in to the command line interface (CLI) of the system using an account with admin access.
When you log in to the system, you are in user (operational) mode.
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Change to config mode.
configThe CLI prompt changes to include
(config). -
Create a backup of the system configuration.
system database config-backup name <*filename*>In this example, you create a backup file of the system configuration named
system-backup1.xml:system database config-backup name system-backup1.xmlSystem configuration backup files are located in
configs. -
Verify that the backup file was created successfully.
file list path configs/ -
Export the configuration backup file to a safe location, such as an HTTPS server.
file export local-file configs/<*filename*> protocol [ https | scp | sftp ] remote-file /tmp/<*filename*>.xml remote-host <*ip-address*> username <*username*>In this example, you connect as the root user to IP address
192.0.2.75and export a backup file namedsystem-backup1.xmlusing the SCP protocol to the/tmpdirectory:file export local-file configs/system-backup1.xml protocol scp remote-file /tmp/system-backup1.xml remote-host 192.0.2.75 username rootThe system requests the password for the remote root account.
Value for 'password' (<string>): ******* result File transfer is initiated.(configs/system-backup1.xml) -
Check the status of the file transfer.
file transfer-statusWhen the file transfer completes, the
StatusdisplaysComplete.
You now have a backup of the system configuration that you can restore on the system if needed.
Before you perform an upgrade, it is a good idea to save and export a backup of the tenant configuration using that tenant’s backup mechanism.
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Tenant |
Summary |
Additional References |
|---|---|---|
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BIG-IP |
For BIG-IP tenants: Create a backup for each running tenant:
Move these backup files to a safe location off of the tenant:
If you perform a clean installation, the tenant will be formatted.\ Note: Consider naming the files to associate them with the appropriate tenants. |
Archives section of BIG-IP Systems: Essentials at my.f5.com K13132: Backing up and restoring BIG-IP configuration files with a UCS archive |
For automatic rSeries system licensing, the system needs to be able to connect to the F5 licensing server either through the Internet or another means of networking. You need to have the Base Registration Key (five sets of characters separated by hyphens) provided by F5, and any add-on keys (two sets of 7 characters separated by a hyphen) that you have purchased. The Base Registration Key with associated add-on keys are pre-installed on a new rSeries system.
You can activate the rSeries system license automatically from the CLI.
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Connect using SSH to the management IP address.
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Log in to the command line interface (CLI) of the system using an account with admin access.
When you log in to the system, you are in user (operational) mode.
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Change to config mode.
configThe CLI prompt changes to include
(config). -
Apply a license to the system.
system licensing install registration-key <*key*>The registration key is optional. If it is not included, the system uses the one that is already pre-installed. If no registration key is found, you receive an error.
This example applies a specified base registration license to the system:
appliance-1(config)# system licensing install registration-key I1234-12345-12345-12345-1234567 result License installed successfully. -
Apply any add-on keys.
system licensing install add-on-keys <*add-on-keys*>This example enables the additional features associated with the three specified add-on keys, along with the entitlements of the base registration key:
appliance-1(config)# system licensing install add-on-keys [1234567-1234567 2345678-2345678 3456789-3456789] result License installed successfully.
The system is licensed. The license and any add-on keys apply to the system and all installed BIG-IP tenants.