DHCP-relay agent problem

Hi, Im stuck on something I thought would be simple and hoping someone here will know what Im doing wrong.

I have a network set up so that theres 4 routers, all running OSPF going to switches with 8 vlans per switch, each vlan being its own subnet. One of the routers is a DHCP server and the terminals connected to the switch on that router are getting IP information without any issues. However when I try to set up a DHCP relay agent on the other routers it doesnt find the IP info. Ive set up the relay agents like this:

interface fa0/0.3
ip helper-address 172.16.253.2 (address of the serial port on the router running DHCP
default-router 172.16.40.1 (address of the fastethernet subinterface on the router for that vlan/subnet)

Is there anything obviously wrong with this setup?

Any help appreciated on this one, thanks, George.

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Comments

Grogger4130

I should add by the way that if i set up a terminal with a static ip to match the vlan it should be on, I can ping the DHCP server address fine.

rakem

post your whole configs from the DHCP server and switches with the issues if you can

lildeezul

make sure that is the port where the broadcast are comming in

dtlokee

Did you create a scope on the DHCP server for the new subnets that you have configured a relay agent?