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RV120W or RV220W or SA500 doing NAT overload to Internet. Lan subnets connected to SF300 / SG300 Layer 3 Switch


Im wondering if it´s possible to have the following topology using a Cisco SF300 L3 Switch and a RV120W or RV220W or SA500 as a Gateway with NAT OVERLOAD for all the IP subnets (,, .  Im designing a solution and want to know if someone had an experience with this topology. If RV120W or 220W or SA500 can´t do this , could you please recommend a router that can (better if its  small business router) or Fortinet .

The point is that I want the L3 switch to perform the INTER-VLAN Routing and the router to perform NAT (overload) for all subnets (I just have 1 public IP address from my ISP).

The gateway for VLAN 10, 20 and 30 is L3 Switch and it would have a default route pointing to the router.  The router will have routes to subnets via L3 Switch.

I have done this  with a Catalyst 3560 and a Cisco ISR 1841 and it works , but now I have to implement it on a limited budget scheme.

I´d like to know if RV120W and RV220W can do the NAT  overload translation for the packets received with source from subnets on vlan 10,20, 30 (,, and destined to the Internet.

Note, the gateway for the subnets is the L3 Switch,  the router is connected to an access port of the L3 switch on a different vlan/subnet.

Thanks in advance for your assistance and advise

Have a great day.

Christian Castillo

Diagrama L3Switching y Nat Router.png

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