How to configure DHCP server for multiple subnets with X430-24t switches?

[Arun_Verma]

Hi All,

Our department manages its own network in our University. All the network switches (X430-24t/48t) are connected to gateway network switch(Extreme switch only) which is provided by the University.

Each Switch has own its subnet. We want to run a common DHCP server for our department. For this, we have to install a DHCP server on one machine but only machines connected to that subnet/Switch is able to get IP address from DHCP server. On each switch, we are using Bootrelay to forward DHCP request to dedicated DHCP server. Bootrelay configuration is not done at gateway switch as we don't have access to it.

Using nc and tshark, we found DHCP packets are not reaching to DHCP server from any other subnet. Do we need to configure Bootrelay configuration on gateway switch also to work our DHCP setup?

Thanks,
V Arun

[Jeremy_Gibbs]

It's pretty simple, for VLANs theat don't have a DHCP server on them, you're going to need a DHCP relay. Otherwise, you will need a DHCP server on the subnet looking for a request.