Another Quick VLAN Question

[mickeyh080]

I was hoping someone could assist with a VLAN issue I'm experiencing. We have a 3 VLAN configuration on our network labelled Default (1), Guest(2) and Voice(3). Now the Guest is for a BYOD Wi-Fi solution which works fine keeping the Guest traffic separate from the main network. The Guest VLAN is linked to a Smoothwall UTM which provides DHCP for the guest Wi-Fi devices and generally this works fine. My issue recently is that we also use Apple TV's connected to projectors which are on the Guest network using the WiFi SSID all secured with passwords for staff to use. My problem is that in one area we want to hardwire the Apple TV using the Ethernet port to try and remove any Wi-Fi lag currently experienced with this devices location. When I connect the Ethernet cable to the Apple TV and configure the switch port to the Guest VLAN it still picks up DHCP from the domain DHCP server instead of the Smoothwall DHCP. With the IP phone system I was able to configure the phones so they knew where to look for DHCP and which VLAN they are a member of but with Apple TV there is no such configuration option. Any suggestions on how to configure the Apple TV or edge switch to only see the Smoothwall DHCP ?

[benjie]

Make the apple TV switch ports an untagged member of VLAN 2, guest and deny access to other VLANs.

[mickeyh080]

Thanks Benjie

 

When I tag the port 18 which is connected to the Apple TV and set the port on the other VLANs to no the Apple TV reverts to a 169 local address and not the 172 address issued by the Smoothwall DHCP.

[ass17]

Use "ip helper-address" thus helping the vlan to a dhcp server of your choice

[mickeyh080]

Use "ip helper-address" thus helping the vlan to a dhcp server of your choice

 

New one for me, bit of Google-ing required but thanks for the pointer.

[ass17]

Yep quite commonly used on HP switches, but not sure what the equivalent is with other switch manufacturers.