ip helper

[Felix_Mugambi]

Hello guys, do we have ip-helper configuration on meraki switches?

[jroegner]

Hi Felix,

click on Switch --> Configure --> Routing & DHCP

Then click "Create an interface" Even on a L2 Switch you can create an interface in the VLAN you need and configure a DHCP Relay address.

Regards 

Johannes

[MarcP]

Should only be possible in MX´s

[BrechtSchamp]

@jroegner is correct. Possible in both MX and MS's (L2 and L3 models). For the switches it's called DHCP relay in the specs.

[Dave_S]

But do you need to enter in an interface IP and, if so what exactly is it looking for?  

[Crocker]

For the MS - It's looking for an interface in the subnet/VLAN you want to listen for DHCP requests in, and will then relay those requests (using the interface's IP), to the DHCP servers it's configured to relay to.

[Dave_S]

So, for example, I have 3 VLANS called VLAN 100, 140 & 150, with IP addresses of 172.28.100.x, 172.28.140.x & 172.28.150.x.  My DHCP server is in VLAN 51 at 172.28.51.x, and the switch is on mgmt VLAN 31 or 172.28.31.x.  For the Routing and DHCP, do I create in interface in each of the vlans, so like 172.28.100.5, 172.28.140.5 & 172.28.150.5 for example pointing to my DHCP server, or would I just use 1 IP for all interfaces in the switch's VLAN 31, forwarding DHCP requests tagged with the VLAN ID to the DHCP server?