Getting Started with the F5 Wireshark Plugin on Windows
Note: As of Wireshark 2.6, this dissector is pre-bundled and does not need separate downloading and installation. Simply enable it via Analyze => Enabled Protocols => F5 Ethernet trailer => f5ethtrai...
It's sad but doesn't work with Wireshark 1.12.2.
That would be great if someone could build plugin for 1.12.x. It's not a usual task on windows if you're not developer.