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    Lucky Boy's Avatar
    Lucky Boy Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Apr 23, 2009, 04:17 AM
    Active and Dead IPs in DHCP Network
    Hey there,

    I just wanted to know if there is any way to find out about the active and open IPs in a DHCP network. It would be really appreciated if you guide me through this.

    Thanks,:cool:
    joel0613's Avatar
    joel0613 Posts: 23, Reputation: 6
    New Member
    		  
    #2

    Apr 23, 2009, 03:35 PM
    Hello,

    If you are using a Windows Server, go to control panel and then administrative tools. Choose DNS. Under forward lookup zones, click on your domain name. That will show the current reservations for DNS. You can use something like angryipscanner to scan your network and compare to the server results.
    ITstudent2006's Avatar
    ITstudent2006 Posts: 2,243, Reputation: 329
    Networking Expert
    		  
    #3

    Apr 23, 2009, 04:42 PM
    There are a couple ways of doing it. The way mentioned by Joel is correct but you could also go into Administrative Tools>DHCP>Scope>Address Lease

    This will show you what IP's are being dished and to what machine!

    Rick
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
    Uber Member
    		  
    #4

    Apr 23, 2009, 05:35 PM

    From any windows machine at the command prompt do the following assuming a 10.0.1.x network.

    Ping 10.0.1.255
    arp -a

    You'll get MAC address and IP address. Might not work if device doesn't respond to a ping.
    chuckhole's Avatar
    chuckhole Posts: 850, Reputation: 45
    Senior Member
    		  
    #5

    Apr 28, 2009, 04:50 PM

    I would also go into the DHCP management console and look at the address leases.

    I will add one more thing to your possibilities as KISS, ITS2006 and Joel have already done so.

    Check out the Network Scanner (free) at SoftPerfect - Software for local area networks, intranets and the Internet.
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