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Advice for best way forward.. Main DC hosts DNS on one IP subnet address + another IP subnet address for DHCP

My main DC in the domain, hosts DNS, this was configured with an IP address and running great. We ran out of IP address so a new subnet was added so the 2nd NIC was configured with the new subnet so it issues IP addresses with DHCP. Configured DHCP to only give IP address on the new subnet.
Set a routing table, and all appears well. But I just wonder if this is the best way of configuring the server and will it cause any problems.

I get a few error like: source SRV, event ID 2012
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2ndsite
Asked:
2ndsite
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1 Solution
 
Nirmal SharmaSolution ArchitectCommented:
>>>But I just wonder if this is the best way of configuring the server and will it cause any problems.

I should say Yes because adding another subnet will work great as DHCP packets will travel in one direction and will not disturb another NIC.

>>>I get a few error like: source SRV, event ID 2012

Issue ipconfig /registerdns on ur computer.

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Steve McCarthy, MCSE, MCSA, MCP x8, Network+, i-Net+, A+, CIWA, CCNA, FDLE FCIC, HIPAA Security OfficerIT Consultant, Network Engineer, Windows Network Administrator, VMware AdministratorCommented:
Let me ask, how many addresses are you using??? What is your Scope in DHCP?
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2ndsiteAuthor Commented:
160 IP addresses
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Steve McCarthy, MCSE, MCSA, MCP x8, Network+, i-Net+, A+, CIWA, CCNA, FDLE FCIC, HIPAA Security OfficerIT Consultant, Network Engineer, Windows Network Administrator, VMware AdministratorCommented:
What is your address range???  I use a scope giving me 240+ addresses.   Why not just do that?
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2ndsiteAuthor Commented:
I'm not sure what your question is regarding the scope details as I have no problems getting IP addresses, however my Address range gives 160 addresses with submask of 255.255.255.0
The Actual server has two IP address on different subnets

the server options are

003 router with both IP address routers
006 DNS servers again with both IP address of servers
015 DNS Domain names = xxxx.local
044 WINS/NBNS servers =
046 WINS/NBT node type = mixed

Hope this helps to advise.
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Steve McCarthy, MCSE, MCSA, MCP x8, Network+, i-Net+, A+, CIWA, CCNA, FDLE FCIC, HIPAA Security OfficerIT Consultant, Network Engineer, Windows Network Administrator, VMware AdministratorCommented:
OK, what I am asking is for you to look at the actual Scope of addresses your server is giving out.  You still have plenty of addresses usable in a 255.255.255.0 subnet.  What is the beginning and ending address range and do you have any exclusions?
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2ndsiteAuthor Commented:
The scope is 10.212.192.30 - 10.212.192.190 and
I have 3 reservations
The router and server addresses are outside of the scope. No other addresses are currently used on this subnet
of 10.212.192

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Steve McCarthy, MCSE, MCSA, MCP x8, Network+, i-Net+, A+, CIWA, CCNA, FDLE FCIC, HIPAA Security OfficerIT Consultant, Network Engineer, Windows Network Administrator, VMware AdministratorCommented:
OK, so why not expand the scope to 10.212.192.1 - 192.168.192.254 ????  Then put exclusions in for the Router and Server addresses.  For example if your router is at .1 and the server at .2, You could exclude .1 to .2 or .1 to .5 or .1 to .10 for that matter.    Now you have the entire scope you can use and not have to fool with any other complications, second NIC or second Subnet.  Just open up what you have.
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2ndsiteAuthor Commented:
That would have worked quiet well but in fact the other subnets are used for other offices so I can not easily achieve this. ie 10.212.192.x on office 10.212.240.x another, etc ... each office naturally issuing IP addresses.
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Steve McCarthy, MCSE, MCSA, MCP x8, Network+, i-Net+, A+, CIWA, CCNA, FDLE FCIC, HIPAA Security OfficerIT Consultant, Network Engineer, Windows Network Administrator, VMware AdministratorCommented:
Sorry, I misquoted and had 2 different IP ranges in my brain

OK, so why not expand the scope to 10.212.192.1 - 10.212.192.254 ????  Then put exclusions in for the Router and Server addresses.  For example if your router is at .1 and the server at .2, You could exclude .1 to .2 or .1 to .5 or .1 to .10 for that matter.    Now you have the entire scope you can use and not have to fool with any other complications, second NIC or second Subnet.  Just open up what you have.
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2ndsiteAuthor Commented:
The actual scope I would need expands 3 subnet, one of which would include another office .. but I suppose I could exclude this subnet ?
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Steve McCarthy, MCSE, MCSA, MCP x8, Network+, i-Net+, A+, CIWA, CCNA, FDLE FCIC, HIPAA Security OfficerIT Consultant, Network Engineer, Windows Network Administrator, VMware AdministratorCommented:
You can exclude almost anything.  If you use some of the addresses in another office, exclude them.  You could add other scopes too, say 10.212.193.1 - 10.212.193.254 and put them in a SuperScope.  The easiest thing right now, I would say is to just expand your existing scope.
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Steve McCarthy, MCSE, MCSA, MCP x8, Network+, i-Net+, A+, CIWA, CCNA, FDLE FCIC, HIPAA Security OfficerIT Consultant, Network Engineer, Windows Network Administrator, VMware AdministratorCommented:
Thanks and Good Luck!
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