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In general terms, are you looking to set up a DHCP relay via LAN (multiple VLAN’s) ? i.e routers use IP helper addresses to forward broadcasts to another server or router on another network via LAN.
Most (some) people use Raspberry Pie or simular (Routing Switch – DD-WRT ) for this sort of procedure.
A little more detail about what you are trying to achieve may assist guidance given
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Q. Does anyone know if can add a IP helper on rt-ax86U ?
A. No idea but can check with ASUS if there is no responses
In a completely sane world, madness is the only freedom (J.G.Ballard).
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For reference. What is IP Helper ?
What is the difference between dhcp and IP helper-address ?
Using the IP helper-address command sets up a DHCP relay. DHCP only works on the LAN to which it is connected because it uses broadcast, which cannot cross a router. To remedy that situation, DHCP relay was created. It gives DHCP an option so that a router intercepts the DHCP client’s broadcast request, creates a unicast request to the DHCP server on a different LAN, and the DHCP server can give a unicast response to the router based on the DHCP option, that then passes on the DHCP response to the requesting DHCP client.
The key piece of this is that the Router sending the DHCP request on behalf of the client will unicast the request with a source address from the address space the client is in (the interface the relay/helper-address is configured on). This is ensures the DHCP server offers an IP from the correct scope.
IP Helper (I believe) was/is a Cisco based service.
Ref: https://networkengineering.stackexchange.com/questions/41376/how-ip-helper-address-works
In a completely sane world, madness is the only freedom (J.G.Ballard).
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Yes, for some reason it still wont work, I had it working on a old setup but now it wont work.
Will have to take a look some time and see if i can figure out why it wont work now.
I’ve basically setup my servers in 192.168.2.0 network and i’ve assigned a non-live NIC so i can access via the Vmware Console and boot up each machine but when i try to PXE boot, just says ipv4. and then it doesn’t get an address and eventually goes back to the menu.
Not sure why it wont work as its effectively a self contained network as it has no internet access at all.
Thanks
Kev
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Always fun 😪
In a completely sane world, madness is the only freedom (J.G.Ballard).
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