Unable to ping VIP from outside, but can ping it form F5

Oh, there is some errors I didn't notice before:

• Your nodes must reside in a different vlan than your mgmt interface, because this interface is dedicated to mgmt, it cannot handle tmm traffic, although monitoring nodes can use it but this is not recommended.
• The mgmt interface should not be used as a gateway for your network.

To simplify, you should refine your configuration as follows (assuming you are using a two sides vlans, internal + external):

1. Move your nodes to the internal vlan
2. Test from a device coming from the the external vlan.
3. Dedicate mgmt interface to management only.
4. Share the result :)