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Setting what network a VLAN can reach

edu87 asked
Last Modified: 2015-03-04
Assuming the following network:
- Lan with vlan 10 ( - servers vlan
- Lan with vlan 20 ( - desktops vlan
- Lan with vlan 30 ( - wireless vlan

I need the following results:

- VLAN 20 and 30 can reach vlan 10 (servers) to be able to use shared files, printers, and all shared things.
- VLANs 20 and 30 can´t see each other (can´t ping and access shared files)

I made a home lab, with my Cisco SG100 layer3 switch, but when I enable the router option, all VLANs can see ping  each other, without an option to restrict a specific VLAN.

What I need to do?
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