Why are you considering that?
Because the Netgate appliances I'd need to replace my whitebox appliance are either the 6100 or the 8200. So if I offload most of the routing into a L3 switch, and I can put dhcp somewhere else too, then all I need is a little 1100 or 2100 appliance to just do firewall.
My current setup has all my switches in L2 mode and all firewall/routing is done in pfsense. If I break out the routing portion (and dhcp) then I don't need nearly as much hardware for pfsense.
Thx. for the response. I bit the bullet and bought a second identical machine (lenovo tiny m720q) to what I'm running now with pfsense. When it gets here and I get it together I'll run the second machine with opnsense, in parallel to the current pfsense setup. I'll probably do something like a double-nat and use opnsense for my esxi and homelab stuff so I can keep pfsense running the rest of the house.
What do you mean other benefits? ACLs? I have pfsense (2x sfp+ lan lacp, 1x mobo gigabit wan), then a Cisco SG500X-24 in L2 mode, then from there I've got the mikrotik crs317 and a bunch of cisco sg300 switches. If I make a change I'd probably offload the dhcp server too. What else am I missing?
Should I try to replace pfsense 1:1 with opnsense for now, and then make changes later (or don't change anything once I'm comfortable)? I've been using essentially the same setup for so long I don't really know much else.