We Have a dhcp pool configured in our core router...
with multiple subinterfaces configured on the ethernet interface for each diff. vlan
however our Windows team wants some
servers to go to a diff dhcp server via
the helper address
how could i configure this since the ip helper address is usually configured under the ethernet port that the switch is connected to?
for example here is a portion of our router config
p dhcp pool POB
network 10.1.12.0 255.255.254.0
p dhcp pool C
network 10.1.14.0 255.255.254.0
FastEthernet0/0.12 10.1.16.3 YES manual up up
FastEthernet0/0.14 10.1.18.3 YES manual up up
Should work fine as ip helper-address command can be configured under the subinterface as well as the interface level.
One other thing. Why are you using DHCP for servers ? is it for the management interface on the servers ?