DHCP not issuing IPs after replacing our NIC.

Our DHCP server stopped issuing IPs after replacing the NIC in the DHCP server.
Changes since was a re-initialize of 3COM switch where DHCP connects to network.  Entered MAC in switch database.
What have I missed?
oldbatterAsked:
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oldbatterAuthor Commented:
Additional information.
I can ping the server from another PC.  Have assigned fix-IPs to all PC.  
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RohnishIT EngineerCommented:
Does the new card come with a Boot ROM?
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ViRoyCommented:
you shouldnt need the MAC in the switch statically....
try a crossover cable to another pc and see if it grabs a ip... if so its a network problem, if not.. its a dhcp server problem.

i believe its a dhcp server problem though.... what is the dhcp server running on... windows?
windows loves to bind things, i wonder if thats whats going on. i would uninstall DHCP then reinstall, setup your scopes and try again...
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oldbatterAuthor Commented:
My OS is NT4.0 SP6.
I've already bound the adapters.
This all happened because I changed my NIC card?
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RohnishIT EngineerCommented:
YES!!!
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JohnnyCanuckCommented:
NT4 is not too smart.  When you create a DHCP server under NT4, it binds that service to that NIC and assigns it a static IP.  All other NICs, including the new one you installed, are supposed to be assigned IPs etc. by the original NIC - which is no longer present.  Stupid NT4.
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oldbatterAuthor Commented:
JohnnyCanuck
Additional info... My old NIC is still in my server, but not connected to my network.
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JohnnyCanuckCommented:
Uninstall DHCP and remove the old NIC.  Setup DHCP again.
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oldbatterAuthor Commented:
Johnny,
I took you information, and connected a router to the old NIC.  The router was setup to obtain IP from DCHP.  The router was able to obtain an IP within the range of my scope.
 Why would I have to uninstall/reinstall DHCP?  Would it work if I just remove the other NIC?  
 Are you suggesting the DHCP is bound to the adapter of the old NIC?  
 I am not sure how to reinstall DHCP.  Should I have a CD in hand, or is it part of the OS?  
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JohnnyCanuckCommented:
You need your NT4 server disk.  Go to control panel and the network applet.  Remove the old NIC.  Click the services tab and remove the DHCP service.  Reboot and go back to the network applet.  Click the services tab and add and DHCP.  A static IP will have to be assigned to the NIC.  Reboot and go to administrative tools and DHCP and setup the scope.  Oh, you'll need to reinstall SP6a also.
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oldbatterAuthor Commented:
Thank You Johnny!!!!!!  Much aloha.  I removed the old NIC, deinstalled/reinstalled DHCP, reapplied sp6a, and all is working fine.
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