Depending on the person at TAC some recommend using only layer 2 and while others suggest using layer 3 when using the firewall in routed mode and not utilizing a router. So what does everyone think? Keep in mind the possibility of using VPN access due to hairpin issues.
Should you use a layer 3 switch, define the VLANS, turn on ip routing, and trunk to the firewall interface with VLAN subinterfaces? or
Use a layer 2 switch, define the VLANS, use ip default-gateway, and define static routes on the firewall?