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  • January 14, 2007 at 9:43 pm #2262644

    DHCP not working on SBS 2003

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    by kurt.foster · about 17 years, 3 months ago

    I have had DHCP working on my SBS server without any issues for about 2 months since the last net work changes. I came back after the christmas break and DHCP is no longer working. There are no errors in the DHCP logs except for repeated DNS Update Failed messages for the same IP address. I tried everything I could think of and resorted to removing and recreating the DHCP scope. Unfortunatley still no change. I am really confused, particularly to the lack of error massages.

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    • January 14, 2007 at 9:43 pm #2505536

      Clarifications

      by kurt.foster · about 17 years, 3 months ago

      In reply to DHCP not working on SBS 2003

      Clarifications

    • January 15, 2007 at 4:43 am #2505463

      DHCP

      by p.j.hutchison · about 17 years, 3 months ago

      In reply to DHCP not working on SBS 2003

      Questions:
      1. Has the IP address of the server changed?
      2. Try running NSLookup tool and see if you can resolve hostnames and IP addresses (if reverse lookup zone set up).
      3. Has the network itself changed. Router replaced?
      4. Has the DHCP server been Authorized?

    • February 19, 2007 at 3:16 am #2509491

      Re: DHCP not working on SBS 2003

      by techrep · about 17 years, 2 months ago

      In reply to DHCP not working on SBS 2003

      Hi there. I too have had the same issue with a client site, the timing of which loosely corresponds with the time of your post. A UDP port scan from client machines confirms that UDP ports 67 & 68 are open on the SBS 2003 server.Running dhcpexplorer from the server itself, I am able to retrieve dhcp information however, running it from a client machine yeilds no response. The dhcp log does not acknowledge and client requests but does include 10 ip addresses that have been assigned to RRAS (hosted on the same server). This server also hosts ISA 2004 and I have confirmed that the relevant firewall policy entries exist for dhcp request/response.

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