OpenStack Compute has long had support for VNC consoles to guests. The VNC protocol is fairly limited, lacking support for multiple monitors, bi-directional audio, reliable cut+paste, video streaming and more. SPICE is a new protocol which aims to address all the limitations in VNC, to provide good remote desktop support. SPICE support in OpenStack Compute shares a similar architecture to the VNC implementation. The OpenStack Dashboard uses a SPICE-HTML5 widget in its console tab, that communicates to the nova-spicehtml5proxy service using SPICE-over-websockets. The nova-spicehtml5proxy service communicates directly with the hypervisor process using SPICE. If Spice is not configured correctly, Compute will fall back upon VNC. Options for configuring SPICE as the console for OpenStack Compute can be found below.