Router attached to 2nd NIC

[slackboy]

On SBS4.5 We are attempting to connect ISDN router to a 2nd NIC in server. After using the wizard we have experienced problems with DHCP and internal network browsing from Server.
We can ping external ip addresses but not internal addresses from server. Nodes on network are able to ping the server by name and ip address?
New Nodes on network are unable to obtain ip addresses from DHCP.
Proxy server 2.0 appears to work correctly enabling nodes to surf the net.
We have tried switching card cable connections this enables browsing of internal network but no access to external addresses.
Any help or idea's would be appreciated.

 

[darranagl]

Just a suggestion, check the bindings on your NICs. Make sure your DHCP is not now bound to the new internet NIC.

Are both your NICs in the same subnet, you may need to put the internet NIC onto a different subnet to seperate the traffic. New Zealand, a great place to visit.

http://www.southland.org.nz