Why we use vlans in the different subnets, the subnets are independent so why??
I know it is a beginner question help me please
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Because VLANs provide layer-2 segregation while subnetting is layer-3.
Two different subnets on the same VLAN (broadcast domain) will still see all the broadcast frames for each.
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No, I'm talking about broadcast frames in layer-2 and not broadcast packets in layer-3. Two different layer-3 subnets will both see all the broadcast frames if they're in the same VLAN because they share layer-2.– AloCommented Dec 28, 2017 at 23:42