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Can I subnet a VLAN?
VLAN may transport one or more subnet (but does not have to, it may be transporting something else than IP entirely). Subnet may be configured for VLAN, but does not have to be, it could be without 802.1Q or over some completely different L2 technology than ethernet. Subnets (L3) and VLANs (L2) are on different layers.
How do VLANs segmentation and subnetting relate?
At a high level, subnets and VLANs are analogous in that they both deal with segmenting or partitioning a portion of the network. However, VLANs are data link layer (OSI layer 2) constructs, while subnets are network layer (OSI layer 3) IP constructs, and they address (no pun intended) different issues on a network.
Do VLANs need different subnets?
No, VLANs don’t require different subnets. Different subnets require different subnet addresses if they ever need to be able to route and/or talk to each other) and by extension if one VLAN wants to talk to a different VLAN it must use different addresses so we can make a routing decision to the right place.
How many subnets are in a VLAN?
one subnet
5: A VLAN is always associated with only one subnet. IT folks often talk about VLANs in terms of subnets. For example, if a server has an IP address of 192.168. 55.12/24, someone might say, “192.168.
Can you use the same IP address on different VLANs?
Yes. A vlan is nothing more than a virtual switch so is completely ambivalent to the IPs running on top of it. The dead giveaway is that vlans are a layer 2 technology and IP addresses are layer 3. Easiest test is setup multiple vlans on a switch and connect a physical cable between access ports on different vlans.
Can vlans have the same IP address?
A VLAN (Virtual Local Area Network) is its own logically segregated broadcast domain. You assign networks, or subnets, just as you would with a physically separated broadcast domain. VLANs do not really have IP addresses assigned to them.
Can a device be on two vlans?
A vlan is not a network. You can have multiple networks on a single wire. You can have a single network on multiple wires – you can’t route between them, but you can move traffic. Every switch port is a collision domain.