Hello Brian, the SX300 series do not support any DHCP service, you will need a router or a DHCP box for this. The SX300 can separate traffic with VLAN. However, as the default layer 2, all request will go to your router then route to the destinations. As the switch in layer 3 mode, you may have local connectivity, however, if your router does not support the vlans or dot1q encapsulation, the router would require static routes for those subnets to be able to correctly route to the internet.
-Tom
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-Tom
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