Can I use a VLAN-unaware switch in a hierarchical switch topology? I have the Following VLANs: 1. Systems 2. Logistics 3. Marketing I need that: * All VLANs can go out to the Internet * Logistics and Marketing can access servers on the Systems VLAN * Logistics and Marketing cannot see with each other So I've made the following schema: ![enter image description here]( * Router at the top should route between VLANs * Switch immediately connected to the router is VLAN-unaware * The 3 switches below are VLAN-aware Is it right?

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> So if the middle switch should be vlan-aware. Can I use below 3 switches vlan unaware? (Considering that each of the 3 switches has only one VLAN)

Yes you can, by configuring the port that connect to the router in trunk mode and the other ports on the central switch in access mode , each in appropriate VLAN.

However I strongly recommend that you go for 4 VLAN aware switches. The additional management capabilities and flexibility it will give you largely compensate the additional cost (which is not so much).