SF200 IP Helper & vlan

[ChrisS_NC]

I'm new to vlans and cisco switches and need a bit of direction. I have a my Wifi clients on vlan1 and would like to split them by SSID to vlans 1 & 2. This I can do in my Ubiquiti Unifi controller. All the wifi traffic comes in through one port on the SF200-24 (port 11). THe clients on vlan1 have no issues getting assigned an IP by the DHCP server (w2008r2) but the clients on vlan2 never get an IP.

Am I correct in thinking that I need to configure an IP helper-address in the switch?

There are no UDP broadcast options in the GUI, Can they be added?

Help!

Thanks, 

     Chris

[rocater]

Hello Chris,

Normally an IP helper or dhcp relay would be the way to go, but the Sx200 series does not have these options. Another possible solution is if your DHCP server supports subinterfaces with vlans, this would allow the server to respond as if it was on both vlans.

[dtbullock]

Hi Robert,

Which SMB-series switches (eg. 300, 500) *do* support an ip-helper or DHCP relay feature?

In my case, it's a design goal to keep chatty broadcast traffic off the wire to the server, so the vlan subinterface hack doesn't really help!

cheers,

David.

[rocater]

Hi David,

Both the 300 and 500 series support DHCP relay as well as layer 3 mode.