I have a Cisco core, I am integrating Dell into my network because I have heard great things. I need to set up DHCP Relays on my vlans (coming from a cisco background) and found that it has to be applied at the interface not the Vlan. I tried to apply it to my interfaces and I get "interface not in layer 3 mode". So this is my problem, am I to put all my ports into Layer 3 to get my relays added? This is on Dell S3148P switches.
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An interface needs to have an IP address to be considered layer 3. I would think that you could apply an IP address to a vlan and enable ip helper on that VLAN interface. Have you tried that?
Page 246 of the user guide has some information on DHCP relay, followed by an example configuration.
I was able to add it to the vlan interface without issues. I think I mis-read something in the set up guide. thanks for the reply!