DHCP Relay in MPLS

[dmwaigi4433]

We have an MPLS connecting our sites.

Plans are to implement VLANs to separate LAN traffic accordingly in each site.

Our current setup is Main site has a server tasked with DHCP functions. The remote sites have the cisco routers doing the DHCP allocation.

So, lets say in the main site, the DHCP server is in VLAN 2. Is it possible to configure the routers in the remote sites with DHCP Relay where this requests can be sent to the main site.

PS: Our service provider cannot give me the router settings, and claims that it is not possible with our current MPLS setup, but I beg to differ with him. So my question is more of "Is it possible?"

[Dennis Mink]

From experience I can tell you that some providers indeed do not allow/support DHCP across their MPLS network. Dont ask why cos I never got an answer back when asking why.  

DHCP relay is a unicast, so I cant see the complexity, but also I cant look inside the MPLS network either.