Vlans Question

[SquaredPit5]

What benefit will configuring VLANs provide to a configuration of a good size of a network? 

[Darren]

Well that depends on the kind of network you want. You want certain computers to be on a different network virtually, for security reasons, to others? Configure a VLAN for each port on a switch. Inbound untagged, forward upstream as a particular tag. Got managed devices? Throw them all on a management VLAN.

 

Can do the same thing with wireless, pretty sure you can get UniFi Pros to tag traffic differently based on the SSID. That allows you to have the same wireless infrastructure but different levels of security. Public WiFi, so they don't see your internal gear and then corporate WiFi etc.

 

There are benefits, but they are only gained when they are required.

[99vw]

They can help performance. Say you have a network with 1000 PCs. Whenever there is a broadcast sent out it has to get sent out to all 1000 PCs. As you can see that is a lot of traffic that has to be sent. Now lets say that only 200 of those PCs actually relied on that boadcast. What you can do is create a vlan and put the 200 in one lan and 800 on the other. Now whenever there is a broadcast sent out it will only be sent to the 200 that needed it.

 

It can also be used for security by being able to create another lan and Isolate traffing going to that lan.

[jbravo]

reduce broadcast storms, security, adminitrative tasks are easier, etc.