In order to use BIG-IP VE, you must have a license from F5. In the 12.x versions of BIG-IP, starting with BIG-IP VE version 12.1.3.1, you can revoke the license from a virtual machine and re-use it on another virtual machine.

From the Configuration utility, to revoke the license, go to System > License and click Revoke.

From tmsh, to revoke the license, run the command tmsh revoke sys license.

This functionality works for BIG-IP VE Bring Your Own License (BYOL) only.

1. In vSphere, edit the properties of the virtual machine.
2. Click the Resources tab.
3. In the Settings area, click CPU.
4. In the Resource Allocation section, use the slider to change the reservation.
   The CPU reservation can be up to 100 percent of the defined virtual machine hardware. For example, if the hypervisor has a 3 GHz core speed, the reservation of a virtual machine with 2 CPUs can be only 6 GHz or less.
5. Click OK.

1. Use an SSH tool to access the BIG-IP^® VE command line.
2. Log in as root.
3. Type tmsh to open the tmsh utility.
   You will see tmsh at the prompt once the utility is opened.
4. To determine whether TSO support is currently enabled, use the command:
   show sys db tm.tcpsegmentationoffload
5. To enable support for TSO, use the command:
   sys db tm.tcpsegmentationoffload enable
6. To disable support for TSO, use the command:
   sys db tm.tcpsegmentationoffload disable

1. Use an SSH tool to access the BIG-IP^® VE TMSH utility.
2. From the command line, log in as root.
3. Type tmsh to open the utility.
4. Run the following commands, replacing <X> in each of the examples with the NIC number.

   To	Use this command
   Turn off rx-checksumming.	ethtool -K eth<X> rx off
   Turn off LRO.	ethtool -K eth<X> lro off
   Turn off GRO.	ethtool -K eth<X> gro off

5. Confirm that LRO and GRO are turned off by running this command: ethtool -k eth<X>.
   In the system response to your command, you should see this info:

   generic-receive-offload: off
   large-receive-offload: off

   If either of these responses is on, your attempt to turn them off was not successful.

6. Repeat this process for each of the NICs that the BIG-IP VE uses to pass traffic.

1. Use an SSH tool to access the BIG-IP VE tmsh utility.
2. From the command line, log in as root.
3. List the current size of the directories on your disk so you can determine which ones need to be resized.
   tmsh show sys disk directory
4. Expand the size of the directories in which you need additional space.
   tmsh modify sys disk directory <directory name> new-size <new directory size in 1KB blocks>
   For example, use tmsh modify sys disk directory /config new-size 3145740 to increase the size of /config directory to 3145740 1KB blocks (or roughly 3,221,237,760 bytes).
5. To confirm that the command you just submitted is properly scheduled, you can show the new list of directories again.
   tmsh show sys disk directory
6. If you change your mind about a submitted size change, you can revoke the size change.
   tmsh modify sys disk directory /config new-size 0
   In this example, the size of the /config directory is left as is, revoking any scheduled size changes.
   After you submit this sequence of tmsh commands, the directory size changes will be scheduled to occur the next time the BIG-IP VE virtual machine (VM) is rebooted.