DHCP multiple subnets on single routed interface

RouterOS General
1

Hi all,

i’ve recently bought an RB5009 as a replacement for an Ubi Edgerouter4.
I want to setup multiple DHCP pools to server over a routed P2P-link to a L3-switch. The L3-switch terminates/routes the internal Vlans and each Vlan has an ip-helper/forwarder installed towards the RB5009.
Now…is this even possible on RouterOS?? I’ve looked through the docs and most howto’s but it says the an “etherlike” interface is needed in the subnet in which you want to handout dhcp-addresses.
On the Edgerouter this was not a problem as you could just make dhcp-pools and it would serve them as a forwarded/helper request came in over the P2P-interface.

Thanks for the info!!

2

No worries…got it working now by adding the “relay field” in the dhcp-server settings and pointing it to the corresponding L3-gateway address on the switch.