DHCP on cisco routers

[brandondaly]

I have a 3640 router, and this has been configured to provide DHCP for its subnet as below

ip dhcp database ftp:\\userassword@159.245.191.7/router-dhcp write-delay 120
!
ip dhcp pool 0
network 159.245.191.0 255.255.255.0
domain-name nwb-contracting
dns-server 10.34.3.70
netbios-name-server 159.245.191.201
netbios-node-type h-node
default-router 159.245.191.254
!


This works fine for the subnet, but I have another subnet 10.37.200.0 255.255.255.128, which has a 1601 router. This router cannot be a dhcp server, but can be a relay. Is it possible to set up dhcp on the 10.37.200.0 subnet, using a combination of the 3640 and the 1601?

 

[jkallen]

shouldn't be a problem. You need to define an IP-Helper on the 1601 to forward the DHCP packets to the 3640, but you also need to define another pool on the 3640 that is for the 10.37.200.0 subnet. When the packets are forwarded by the 1601, the 3640 should see what subnet they came from and give an address that matches its subnet.

Good Luck