DHCP and Default Gateway assignment

Dell / Poweredge 1750
January 19, 2009 at 13:27:54
Specs: WINDOWS Server 2003, 2 gig
Good Afternoon All,

Last week I DCPROMO'ed a existing server to replace a failing DC. I also made it the DHCP server for our internal network. After I got it configured, it ran OK. All the internal servers received IP's and I could login to the web. Today when I came into the office I could not login to anything. I little research showed that I was NOT getting the default Gateway IP for the office router. The DHCP server seems to be running. If I do an IPCONFIG /release IPCONFIG /renew. I get an IP with the associated primary and alternate DNS servers listed. Just no "Default Gateway" is listed it is blank. Can someone advise as to what I need do to solved this issue? For the time being I have put in static IP information so I can get some work done.

Regards and TIA,
Paul

Regards,
Paul


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#1
January 19, 2009 at 13:33:38
You didn't mention unauthorizing the former dhcp server and authorizing the new dhcp server.

"All the internal servers received IP's "

No server should ever be receiving dhcp addresses. They should all be static and excluded from the dhcp scope.

Review the dhcp servers ip output. Does it include the gateway?

Otherwise this is a sign of another dhcp server answering requests on your lan.


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#2
January 19, 2009 at 13:43:14
wanderer,
Yes I did deauthorize the other server. The scope of the internal network IP's are 192.168.0.4 -> 192.168.0.192 with 192.168.0.2 (Static IP - DC1, DNS), 192.168.0.3 (Static IP - DC2, DNS & DHCP) and 192.168.0.150 (VoIP) excluded.

Regards,
Paul

Regards,
Paul


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#3
January 19, 2009 at 14:25:44
VoIP server doing dhcp?

You have to find the misconfigured dhcp server.

Shutdown or disable the MS dhcp server and then do a ipconfig /renew. Still get the bad address?

Please post the results of a ipconfig /all from the problem pc.


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Related Solutions

#4
January 19, 2009 at 15:39:40
Good Evening wanderer,
Thank you for helping me. The VoIP is NOT a DHCP server. Been working fine for two years. The two DC on our internal network have static IP assigned to them. 192.168.0.2 and 192.168.0.3. The .3 server is the DCHP server. The old server has been deauthorized and as a DCHP server and had AD, DNS removed, it is also been taken down. Friday, when I set this server up all was fine.
Question for you ... Should this server the DHCP and the other DC as well have static IP's or should they have "reserved" IP's instead?

Regards,
Paul


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#5
January 19, 2009 at 19:29:41
Reserved ips are just like static but you are using dhcp to do it. I perfer static assignments so I don't have issues if my dhcp server is down for any length of time.

Did you review the dhcp scope settings. If its the only dhcp server and your workstation is set to dhcp but then I don't know that...
"Please post the results of a ipconfig /all from the problem pc."

If you don't see an error in dhcp server then
what happens if you disable dhcp on the server and you do a ipconfig /renew?


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#6
January 20, 2009 at 07:07:45
Good Morning wanderer,

Thank you for your reply. I have solved the issue. It was a scope issue. I forgot to add the router into the "scope options" on Friday.

Regards,
Paul

BTW: Do you much about Active Directory, DNS, replication LDAP etc.? I have been tasked with taking over these duties. And I have just basic knowledge on these matters. If you are and expert I would like to off-line with you for some help if you agree.

Regards,
Paul


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#7
January 20, 2009 at 07:11:05
Good Morning wanderer,

Thank you for your reply. I have solved the issue. It was a scope issue. I forgot to add the router into the "scope options" on Friday.

Regards,
Paul

BTW: Do you much about Active Directory, DNS, replication LDAP etc.? I have been tasked with taking over these duties. And I have just basic knowledge on these matters. If you are and expert I would like to off-line with you for some help if you agree.

Regards,
Paul


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#8
January 20, 2009 at 07:52:23
Good Morning wanderer,

Thank you for your reply. I have solved the issue. It was a scope issue. I forgot to add the router into the "scope options" on Friday.

Regards,
Paul

BTW: Do you much about Active Directory, DNS, replication LDAP etc.? I have been tasked with taking over these duties. And I have just basic knowledge on these matters. If you are and expert I would like to off-line with you for some help if you agree.

Regards,
Paul


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#9
January 20, 2009 at 08:55:50
Good Morning wanderer,

Thank you for your reply. I have solved the issue. It was a scope issue. I forgot to add the router into the "scope options" on Friday.

Regards,
Paul

BTW: Do you much about Active Directory, DNS, replication LDAP etc.? I have been tasked with taking over these duties. And I have just basic knowledge on these matters. If you are and expert I would like to off-line with you for some help if you agree.

Regards,
Paul


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#10
January 20, 2009 at 11:06:37
Most of us have full time jobs but like to volunteer to keep sharp.

There are a number of very knowledgable and experienced people who respond to posts here.

I would encourage you to post here concerning any questions you may have.


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#11
January 20, 2009 at 11:14:03
Good Afternoon wanderer,

Thank you for all of your help. I will take your advice and continue to post questions as they arise.
Regards,
Paul

Regards,
Paul


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