Vlan on Switch vs Router?

in CCNA & CCENT
Hi Everyone,
Can vlan's be set up on routers or just switches? Also, please correct me if i am wrong, that vlans depend on on subnets created in a router, so a router *must* be subnetted before a switch can be split into vlans?
Thanks,
Node
Can vlan's be set up on routers or just switches? Also, please correct me if i am wrong, that vlans depend on on subnets created in a router, so a router *must* be subnetted before a switch can be split into vlans?
Thanks,
Node
0
Comments
Nope. You can have a network that is just a switched environment with VLANs. If you want the VLANs to talk to each other or to the outside, then you will need a router, but it is not a requirement simply for a switched VLAN environment.
VLAN 1 Fastethernet0/0.1 192.168.1.0/24
VLAN 2 Fastethernet0/0.2 192.168.2.0/24
VLAN 3 Fastethernet0/0.3 192.168.3.0/24
etc
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Basically what has been said. VLANS are designed to run on switches and routers. There are fundamental differences of what works where and why. A VLAN's primary function is to separate hosts into different groups based on function need, geographic location, etc. Once built into a VLAN hosts can only communicate with themselves on that particular VLAN. This separates them essentially into different networks. A router or a layer 3 device would be needed to communicate VLAN to VLAN.
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