configuring dhcp requests 2

[wurchris]

need some advice on how to configure 2 cisco 1721's with a 2Mb, x21 point to point circuit between, to pass dhcp requests from a windows 2K server. On the remote side I have given the router(B) an ethernet address 0f 10.21.75.200/24 and on the serial interface an address of 192.168.161.2/30. At the server side the router(A) has ip address 10.20.75.200/24 and serial addr. of 192.168.161.2/30. I have configured the dhcp server to have a def gateway of 10.20.75.200 and have added the routes 10.21.75.0 255.255.255.0 192.168.161.2, 0.0.0.0 0.0.0.0 10.20.75.254(firewall). to router(A), and 0.0.0.0 0.0.0.0 192.168.161.1 to router(B)With this simple config I can ping across bothe networks, but am unsure as to how to configure/change config to make dhcp work. Any ideas??

 

[InDenial]

You need an ip helper address

dhcp requests are not routed. if you configure an ip helper address

ip helper address <dhcp server ip address>

it should work... you should set this no the interfaces that is used as the gateway on the client side...

InDenial

 

[douglas1]

thanks for that. i have set ip helper-address on the remote eth port to 10.20.75.253(dhcp server).
i can ping from either router to the remote network but not for instance from the dhcp server to remote router. i'm not sure if my routing table is correct. any suggestions?
on the remote router i have ip route 0.0.0.0 0.0.0.0 192.168.161.1(S/0 address of server side router). is this right?