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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:

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  • 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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    you mean "The 3 switches below are vlan unaware". From what you say all your switches are vlan aware. You can edit your question to correct.
    – JFL
    Mar 17 '16 at 18:19
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    The one in the middle is the one that needs to support vlans. if the edge switches send tags to it, they may be dropped as oversize frames.
    – Ricky
    Mar 17 '16 at 18:30
  • But what about if router is vlan aware too?
    – sebelk
    Mar 17 '16 at 18:34
  • 1
    If the middle switch drops the frames, the router will never see them.
    – Ron Trunk
    Mar 17 '16 at 18:39
  • 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)
    – sebelk
    Mar 17 '16 at 18:58
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In response to

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).

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