static routing

I have reached an impasse.I have three DC's the first is a dns/iis server the second is a dhcp with dual nics.The third is just a DC.
I have the IP addresses on the dns set at 172.16.101.2 255.255.255.0 the DHCP is set with con1 set at 172.16.101.1 255.255.255.0
con2 set 172.16.102.1 the third DC has a reserved IP of 172.16.102.2 I set up a static route with destination 172.16.102.0 netmask 255.255.255.0 and gateway set at 172.16.101.1
I can see both from the server with both NIC's but neither of the other two can see
each other.Dynamic would be easier but that isnt an option i am allowed by the boss.What have i done wrong?
Hopefully someone can point me in the right direction.

Which NIC on the DHCP server does not return a ping from the third DC?

<a href="http://www.microsoft.com/WINDOWS2000/en/server/help/mpr_how_defaultroute.htm" target="_blank">M$ default static route info</a>

You specified the correct gateways to servers. And why the dynamic routing isn't an option, you can avoid to much problem with dynamic routing, btw is the same thing, the only diference is in the static you have to enter the route manually keep checking if the route are fine. Don't forget if you are going to make it static you have to make the route permanent, if you don't do it every time you reboot the server you have to enter the route again. In the dynamic you don't have to do anything.

I got it to work had to put routing on the other servers as well.
The third just would not see the first one until I put the route on it as well.
I needed to set the routing before I installed AD.
I know dynamic would have been so much easier but I was told static so static it was.