I have a link that is connected to my Cisco router that is 100M. I have two different sub-interfaces on two different VRFs. One for private network traffic and one for Guest WiFi. I'd like to do QoS/Prioritization so that if there is saturation, the private network VRF traffic is preferred over the Guest WiFi VRF. Is it possible to do QoS or some kind of prioritization to prefer private network traffic but allow the Guest WiFi to use the bandwidth if it's free? If this is possible, can you please include a template or example of what you think would work? Thanks.