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Why do VLANs have different IP addresses?
Virtual LANs and IP subnets provide independent Layer 2 and Layer 3 constructs that map to one another and this correspondence is useful during the network design process. This would indeed be the IP addressed assigned to the VLAN itself. Specifically, it is the IP address of the “switch” the VLAN is on.
How many Vlans should I have?
If you’ve got traffic that has to be prioritized(like VOIP, or Storage) than put that traffic in one VLAN. Your Users(and Printers) can be in one VLAN, or because of the amount I would make 2-3 VLANs; if there are security reasons to separate a certain department or group of users, than take them out of the User VLAN.
What’s the difference between a VLAN and a subnet?
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.
What’s the difference between a VLAN and a switch?
Quality of Service schemes can optimize traffic on VLANs for real-time (VoIP) or low-latency requirements (SAN). Without VLANs, a switch considers all devices on the switch to be in the same broadcast domain, so VLANs can essentially create multiple layer 3 networks on a single physical infrastructure.
Why do VLANs need their own IP address range?
Whelton Network Solutions is an IT service provider. VLAN tagging is the tagging of Layer 2 VLANs, VLANs should have their own IP address range and this completes the logical separation of traffic. Was this post helpful? Thanks for your feedback!
Can a layer 3 router tell the difference between VLANs?
No, if it was the same IP address space a layer-3 router which makes a decision based on the IP address wouldn’t know but one place to send any given response. VLANs are not complicated, they are just separate LANs but a lot less trouble to deal with than physically separate LANs as they don’t need separate hardware.