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  • Cleaning up DNS

    We have some older DNS records from computers that no longer exist in our organization. We have a static environment of around 600 Windows based PCs that have been renamed, IP changed, etc.

    We have some issues where when I ping DNS name computerA, I get a reply back from computerB. I'll ping IP 192.168.10.2 thinking it's computerA and get a reply back from computerB.

    Those are just a few examples. I can look at our DNS and see where records are not setup correctly.

    My question is this. What is the best way to clean this up to where when I ping computerA, I get computer A? How can I correct this and how can I prevent this from happening in the future.

    We are running a 2003 fully functional domain and have 3 Windows 2003 DNS servers.
    MCITP:SA, MCSA 2003, MCP, CCNA, A+, Net+, Security+

  • #2
    Re: Cleaning up DNS

    Scavaging?
    But are you telling that you aren't using DHCP with 600 computers?
    Marcel
    Technical Consultant
    Netherlands
    http://www.phetios.com
    http://blog.nessus.nl

    MCITP(EA, SA), MCSA/E 2003:Security, CCNA, SNAF, DCUCI, CCSA/E/E+ (R60), VCP4/5, NCDA, NCIE - SAN, NCIE - BR, EMCPE
    "No matter how secure, there is always the human factor."

    "Enjoy life today, tomorrow may never come."
    "If you're going through hell, keep going. ~Winston Churchill"

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    • #3
      Re: Cleaning up DNS

      Originally posted by Dumber View Post
      Scavaging?
      But are you telling that you aren't using DHCP with 600 computers?
      That I am. I inherited this network about a year ago. I was shocked myself to find out that they ran in a static environment with that many PCs. I have converted 2 VLANs over to DHCP. I'm probably just going to turn DHCP on in the other VLANs with conflict detection and work on a script to convert them to DHCP.



      I had heard of scavenging in the past, but did not realize what it was for. I'll check it out in more detail. Thanks for the idea.

      HERE I COME!
      MCITP:SA, MCSA 2003, MCP, CCNA, A+, Net+, Security+

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      • #4
        Re: Cleaning up DNS

        You can probably script it when using netsh.
        Marcel
        Technical Consultant
        Netherlands
        http://www.phetios.com
        http://blog.nessus.nl

        MCITP(EA, SA), MCSA/E 2003:Security, CCNA, SNAF, DCUCI, CCSA/E/E+ (R60), VCP4/5, NCDA, NCIE - SAN, NCIE - BR, EMCPE
        "No matter how secure, there is always the human factor."

        "Enjoy life today, tomorrow may never come."
        "If you're going through hell, keep going. ~Winston Churchill"

        Comment


        • #5
          Re: Cleaning up DNS

          I agree, scavenging is the key. The only issue you will have (if I remember correctly) are any records that have been manually created in DNS will not be scavenged as they have an infinate TTL. You can check this by selecting 'Advanced' from the view menu in your MMC and checking the properties of the individual records.

          Rob.
          Rob.
          ----
          There are 10 types of people in the world: Those who understand binary, and those who don't...

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