Handling DHCP Packets from a relay on Mx80

[RNB]

I see that Meraki Mx80 allows to configure DHCP on static route entries. but I don't see how to link that to the option82 string coming from the relay agent. 

 could somebody let me know how to do this ?

[BrechtSchamp]

If I interpret the docs correctly, you need configure the switch to relay the requests to the IP address that the MX has on the next hop subnet. Inversely, on the MX you'll have to configure the IP of the L3 switch doing the relaying. I wouldn't worry about the option 82. I think the MX will handle that part automatically behind the scenes.

[RNB]

For this part “ Inversely, on the MX you'll have to configure the IP of the L3 switch doing the relaying. ”

Where should I be configuring the IP of the L3 switch on Mx ? As part of GW address ?

--
Bhushana

[BrechtSchamp]

Yeah in the gateway field. As that is what the client needs to be using to reach the outside world (it can't use the MX's address because the MX isn't on the same subnet). I may have put that a bit poorly. It doesn't necessarily need to be the switch that is doing the relaying, but generally it will be.