I have been having a similar issue on my CSS326 where I am using it as a glorified media converter on my WAN side. The sole purpose is to be able to quickly switch between firewalls when testing different solutions. I've am using pfsense but have been playing around with Sophos XG and OPNsense as we...

I am looking at a somewhat similar setup and have some problems that I can't really figure out. I'm using a CSS326-24G-2S for my setup, which also has two SFP+ ports and the rest are 1Gig only. I am running pfsense as my firwall/router and normally plug the fiber module directly into that machine. H...