Switch Router vlans l2 l3 help

Hi i have Switch he is layer2 and have Router Layer3 when i make on switch 2 vlans with difrent subnets and then they can not see, i know i need to make something on router only what maybe can help me something like logical interface

interface fastethernet 0/0.100 ip address description for vlan 100

and i ge this when i try to setup ip address on logical interface % Configuring IP routing on a LAN subinterface is only allowed if that subinterface is already configured as part of an IEEE 802.10, IEEE 802.1Q, or ISL vLAN.


and interface fastethernet 0/0 ip address desscription for vlan 1 default

pls help how to make that 2 vlans can see ....

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Is the switch a layer 3 switch? Is the router a separate device? If so, you need to trunk the VLANs out to the router and assign the IPs there and ensure routing is turned on. If this is a layer 3 switch, then you need to put the fast ethernets in vlans, create the vlans (interface VLAN1), give them IP addresses, and turn up routing.

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