MultiHomed Win2k3 AD server hangs after diable of one nic

Hello. I have a win2k3 server, multi homed, 172.16.x.x on one nic, 10.x.x.x on the other nic. system was built on the 10.x.x.x network. the 172.x.x.x side was added later. we are migrating to the 172.x.x.x nic and decomssioning the 10.x.x.x side. the server has fsmo roles in AD, GC is one of them. we tried to diable the 10.x.x.x nic and the server hung for a while. it still provided file and print services but it wa in applying computer setting state for a long time and we couldn't rdp. how do we properly decomission this nic from the system and active directory, assuming that is a factor in all this as well?
jlaveryAsked:
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Netman66Connect With a Mentor Commented:
It was about the NIC placement in the order, no question.  You moved it before the reboot then disabled the other one - even if you hadn't disabled it you would have seen a difference.

Do whatever you think is fair.

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brakk0Commented:
Make sure DNS and default gateway are configured on the new NIC and removed from the old NIC.
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jlaveryAuthor Commented:
the 172.x.x.x side has been installed for some time now and has been functioning with proper ip config settings such as dns and dg. all we did was disable the nic with the 10.x.x.x address and it hung the server. we just need proper procedure for disabling one side of a multim homed server that had AD roles.
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brakk0Commented:
There shouldn't be anything to it unless you still have some service using that NIC. IIS or something else maybe.
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Netman66Commented:
Is the 172.x NIC at the top of the binding order?  My guess is no.

It needs to be.

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jlaveryAuthor Commented:
where would i verify the bidings order? please advise..
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Netman66Commented:
Right-click Network Places and select Properties.
On the menu select Advanced, then Advanced Settings.
Highlight the 172.x adapter if it is not at the top.
Use the arrows to the right to move it up.

Reboot.

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jlaveryAuthor Commented:
will advise. we are shutting down after hrs tonight... the setting did have the 10.x.x.x nic on top as you implied.
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Netman66Commented:
Good stuff.

You should notice some things start working now.  The only things to be mindful of are DHCP and DNS - make sure they are servicing the correct NIC or you'll see lots of errors.

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jlaveryAuthor Commented:
thank you/
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jlaveryAuthor Commented:
we resolved the problem by diabling the NIC in system bios.. that got us through cleanly without and lag or server system hangs.

with that in mind i don't know who should be awarded the points on this one.
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