Thank you for pointing me in the right direction, I am brand new to pfsense. I wasn't expecting the SG-3100 to have it's built in little switch.
I am finding conflicting information regarding the SG-3100 being able to support LACP on a LAGG.
This post indicates the SG-3100 seems to not support LACP
https://forum.netgate.com/topic/131207/lagg-on-switched-ports-on-sg-3100
and this Netgate article has LACP described for the SG-3100 has LACP listed as a protocol for the SG-3100.
I am still have difficulty created a 2 port LAG to a Cisco switch using LACP and trunking multiple VLANs over it.
Has anyone here been successful at this?
Thank you.