Remove the second port from the VLAN (probbly put it in Access mode) and then have it be the mirror destination. I don't think mirroring means what you think it means. Mirror will span both TX and RX ...

I can easily enough get into the switch and setup a VLAN with several ports, and I think I'm doing everything correctly in pfSense to get that VLAN up and running, but nothing is working. Is there a ...

In the IP based Ethernet networks, data and voice services are often transmitted simultaneously over the network. Voice traffic, in particular, requires a higher forwarding priority than data traffic.