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  • DHCP Server not issuing or updating IP Addresses

    Hi,

    Hopefully someone would be able to help me in this. I have a SBS 2003 running AD/DHCP/WINS. It was issuing IP addresses fine until yesterday. I have a couple of WS that cannot ping or get an IP address automatically via the DHCP server. If you try to give the WS a static IP address, the icon at the task bar solidifies and you still cannot ping either the DC or the router.

    The IP address of the SBS 2003 is the following:
    Windows IP Configuration
    Host Name . . . . . . . . . . . . : DC-CCTX
    Primary Dns Suffix . . . . . . . : CCTX.local
    Node Type . . . . . . . . . . . . : Hybrid
    IP Routing Enabled. . . . . . . . : No
    WINS Proxy Enabled. . . . . . . . : No
    DNS Suffix Search List. . . . . . : CCTX.local

    Ethernet adapter Server Local Area Connection:
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Intel(R) PRO/1000 MT Network Connection
    Physical Address. . . . . . . . . : 00-C0-9F-25-D4-C9
    DHCP Enabled. . . . . . . . . . . : No
    IP Address. . . . . . . . . . . . : 192.168.0.1
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Default Gateway . . . . . . . . . : 192.168.0.254
    DNS Servers . . . . . . . . . . . : 192.168.0.1
    Primary WINS Server . . . . . . . : 192.168.0.1

    I have done the following commands on the WS:
    ipconfig /flush dns, ipconfig /register dns, netsh winsock reset.

    The IP address of the WS (it always had static IP assigned to it) is the following:
    Windows IP Configuration
    Host Name . . . . . . . . . . . . : TNWS
    Primary Dns Suffix . . . . . . . :
    Node Type . . . . . . . . . . . . : Broadcast
    IP Routing Enabled. . . . . . . . : No
    WINS Proxy Enabled. . . . . . . . : No

    Ethernet adapter Server Local Area Connection:
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Broadcom NetXtreme 57xx Gigabit Controller
    Physical Address. . . . . . . . . : 00-18-8B-20-58-63
    DHCP Enabled. . . . . . . . . . . : No
    IP Address. . . . . . . . . . . . : 192.168.0.32
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Default Gateway . . . . . . . . . : 192.168.0.254
    DNS Servers . . . . . . . . . . . : 192.168.0.1
    Primary WINS Server . . . . . . . : 192.168.0.1

    The DHCP server is also acting wierd. I deleted and recreated the scope, restarted the server, recreated the DNS, but nothing is working. The DHCP is showing address leases with BAD_ADDRESS. Look at the attached file DHCP Address Leases.txt for detailed information. If I try to add a Reservation, it comes up as Inactive. Also I have attached the DHCP Statistics Screnshot.

    I also have 2 NetGear RangeMax WNDR3700. They were working fine till the issue started. Now they cannot get IP addresses via DHCP or even if I give them Static IP Addresses, it still does not make a difference. I had one installed behind an old switch. I removed the switch and directly connected it to my NetGear Gigabit Switch and it found the DHCP.

    I first thought that the Firewall must be enabled. I double checked that it is not and I also disabled Windows Firewall/Internet Connection Sharing (ICS) in Services. Assuming if Windows Firewall is corrupted, I ran CEICW and got an error during the Firewall Configuration. I also attached the icwlog.txt file. I did see some errors, but could not deduce with the help of Microsoft TechNet or Google on how to resolve them. I also tried running the Change Server IP Address Wizard (I entered the static Server IP address of 192.168.0.1 again). It also created an error. I have attached the changeiplog.txt file too.

    Ping from DHCP Server is also slow. Look at the ipaddresses.tx file for more information.

    I am running out of ideas on how to resolve these issues.

    Help would really be appreciated.

    Ali




    DHCP Address Leases.txt

    changeiplog.txt

    icwlog.txt

    ipaddresses.txt

    Click image for larger version

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  • #2
    Re: DHCP Server not issuing or updating IP Addresses

    Hi,

    what do you get in event viewer on client and server side when you try to renew the ip address
    Thanks & Regards
    v-2nas

    MCTS 2008, MCTIP, MCSE 2003, MCSA+Messaging E2K3, MCP, E2K7
    Sr. Wintel Eng. (Investment Bank)
    Independent IT Consultant and Architect
    Blog: http://www.exchadtech.blogspot.com

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    • #3
      Re: DHCP Server not issuing or updating IP Addresses

      quick question, I've scanned your post and don't see it written there, but i may have scanned too quickly (I do that.)

      Have you restarted the DHCP Service? Yes. I now see you have restarted the server. Here's what I'd do (yes, it's annoying)

      setup a DHCP server on another device - it might be a spare server, it might be your router. either way, ensure it's authorised
      turn OFF dhcp on the server.

      now, reun ipconfig /release | ipconfig /renew on a couple of the workstations

      See if they are able to obtain addresses.
      then, completely kil lall the dhcp databases, remove and reinstall the service
      Last edited by tehcamel; 20th February 2011, 20:03.
      Please do show your appreciation to those who assist you by leaving Rep Point https://www.petri.com/forums/core/im.../icon_beer.gif

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      • #4
        Re: DHCP Server not issuing or updating IP Addresses

        Check for physical network problems. Try to isolate network segments. Maybe you have a faulty NIC, switch, router, cable...
        Last edited by kojo1984; 18th March 2011, 23:25.

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