Are now a days still viable getting ROAT on your branches? Let's suppose you have say a Catalyst 9300 with advantage license, you just need your basic EIGRP protocol, maybe some ACL, DHCP services and your routing. Do you really need a router if the switch can perform all those functions? Are there any benefits on having a router? What's faster the router or the switch?
A little backstory, back in my college days I interned in a networking solutions company installing network equipment on clients sites, and on on particular client (which didn't had much money) paid a pretty big sum of cash on their network refresh project, I understand some ISR can act as gateways, so you obviously need your ISR Router with the module card BUT this sales guy at the time sold them a router on each site, plus new catalyst 9300 switches, which even if you get them with the essentials license, you're still able to get a site up and running, but in this case the sales guy go them advantage. In my opinion the sales guy just wanted to add as much to the bill since the sales people work on commission, that's just my opinion, but what's really the benefit of having a router if you can perform the same tasks as a L3 switch?
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