Normally your ASA 5505 is already a router... and it is dedicated to be a firewall, so no problem at that one.
Only thing you can get if you use the upgraded license where you can have 20 Vlans, is that your ASA will become a bottleneck for traffic as it can only handle 100mbit per port and has a maximum throughput.
It all depends on your needs.
Re: ASA 5505 firewall will use as a Firewall /router
4 years 6 months ago #38451