F5 Trunk port is connected to Cisco Switch Access Port

Hi Giltjr, The connections looks ok and what I can predict from above diagram is that the two switches are stacked. Is it? If yes then just as part of the design and if you have ports avaliable on your F5 box select another port lets say 3 on each box for the one connecting to the switches access port and connect F51 to SW2 and F52 to SW1. As the secondary box does not process any traffic there should be no looping unless you are keeping both the boxes as Active Active only then the looping has to be investigated.

Regards,