VLAN's and DHCP

[dawks]

I'm working on setting up a new wireless network, probably using something like Unifi AP's. They support up to 4 SSID's and VLANs. What I'd like to so is set up probably 3 separate networks. I'm a little new to VLAN's. I have switches configured with VLAN's (one for voice and one for data already).

I am assuming each separate wireless network (SSID) should have a different subnet? How would I provide DHCP to each VLAN?

:ninja:

 

[imagoon]

you would:

a) dedicated DHCP server per segment (easy but silly)
b) use ip helper addresses and a DHCP server that handles multiple segments, then setup the scopes (likely the best)
c) Multiholmed DHCP (also works but is a PITA)

 

[Jamsan]

What switch models do you have? Option 2 listed above is your best and easiest bet.

In Cisco land, the only command needed is the below applied to the VLAN interface, with the x's replaced by the IP of the dhcp server.

ip helper-address xxx.xxx.xxx.xxx

 

[dawks]

What switch models do you have? Option 2 listed above is your best and easiest bet.

In Cisco land, the only command needed is the below applied to the VLAN interface, with the x's replaced by the IP of the dhcp server.

ip helper-address xxx.xxx.xxx.xxx

Running HP Procurves.

Server 2008 R2 DHCP.

 

[imagoon]

Procurves use the exact same command.

You put ip-helper-address on the interface you need to forward DHCP on.

Like Cisco, assuming a layer 3 switch. If not this goes on the router.

 

[m1ldslide1]

you would:

a) dedicated DHCP server per segment (easy but silly)
b) use ip helper addresses and a DHCP server that handles multiple segments, then setup the scopes (likely the best)
c) Multiholmed DHCP (also works but is a PITA)

Option B FTW - sounds like you've gotten the necessary config below as well.