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BAD ADDRESS in dhcp RRS feed

  • Question

  • hi;
    I use windows server 2012 r2 as DHCP server.
    Scope:   192.168.0.1 - 192.168.1.254
    Netmask: 255.255.254.0
    Gateway: 192.168.1.223
    DNS:  192.168.1.223
    exclude: 192.168.1.1 - 192.168.1.254
      192.168.0.1 - 192.168.0.20
      192.168.0.240 - 192.168.0.254
    the problem is the DHCP server leased BAD_ADDRESS for all IP Address.
    the Reserved address works good; and the other ip list in the bad address.
    Wednesday, August 24, 2016 12:37 PM

Answers

  • Hi

     Usually BAD ADDRESS temporary leases are created by the DHCP server when an IP conflict is detected. make sure that those addresses are not in use.
    Check this and setup on your DHCP: http://technet.microsoft.com/en-us/library/dd183587(v=ws.10).aspx

    Once you setup DHCP conflict detection it should resolve the issue on DHCP and automatically resolve conflicts

    Also if you have a dhcp failover cluster,you should check the article to fix;https://blogs.technet.microsoft.com/teamdhcp/2014/02/24/dhcp-failover-fixes-in-kb-2919393-for-windows-server-2012-and-kb-2919355-for-windows-server-2012-r2/

    Otherwise you should check event viewer menu for error log's..


    This posting is provided AS IS with no warranties or guarantees,and confers no rights. Best regards Burak Uğur

    • Proposed as answer by John Lii Thursday, August 25, 2016 2:46 AM
    • Marked as answer by Leo Han Tuesday, September 6, 2016 7:28 AM
    Wednesday, August 24, 2016 1:47 PM
  • hi again.

    I use one Mikrotik Device in my network and thats the problem. the conflict dhcp in configuration.

    thanks

    Monday, October 17, 2016 6:29 AM

All replies

  • Hi

     Usually BAD ADDRESS temporary leases are created by the DHCP server when an IP conflict is detected. make sure that those addresses are not in use.
    Check this and setup on your DHCP: http://technet.microsoft.com/en-us/library/dd183587(v=ws.10).aspx

    Once you setup DHCP conflict detection it should resolve the issue on DHCP and automatically resolve conflicts

    Also if you have a dhcp failover cluster,you should check the article to fix;https://blogs.technet.microsoft.com/teamdhcp/2014/02/24/dhcp-failover-fixes-in-kb-2919393-for-windows-server-2012-and-kb-2919355-for-windows-server-2012-r2/

    Otherwise you should check event viewer menu for error log's..


    This posting is provided AS IS with no warranties or guarantees,and confers no rights. Best regards Burak Uğur

    • Proposed as answer by John Lii Thursday, August 25, 2016 2:46 AM
    • Marked as answer by Leo Han Tuesday, September 6, 2016 7:28 AM
    Wednesday, August 24, 2016 1:47 PM
  • Thanks;
    I check that and set delay to 1; but doesn't work.
    I check the Events and see that Event ID: 20287
    DHCP client request from C80084A02BB2 was dropped since the applicable IP address ranges in scope/super scope 192.168.0.1 - 192.168.1.254 are out of available IP addresses. This could be because of IP address ranges of a policy being out of available IP addresses.

    2500 new error!!

    how can I fix that?
    Thursday, August 25, 2016 5:25 AM
  • Thanks;
    I check that and set delay to 1; but doesn't work.
    I check the Events and see that Event ID: 20287
    DHCP client request from C80084A02BB2 was dropped since the applicable IP address ranges in scope/super scope 192.168.0.1 - 192.168.1.254 are out of available IP addresses. This could be because of IP address ranges of a policy being out of available IP addresses.

    2500 new error!!

    how can I fix that?
    Thursday, August 25, 2016 5:30 AM
  • Hi

     You should first do DHCP database cleanup for expired leases (cause the issue)

    http://social.technet.microsoft.com/wiki/contents/articles/25098.how-to-force-a-dhcp-database-cleanup-for-expired-leases-in-a-specific-scope.aspx

    https://blogs.technet.microsoft.com/platformspfe/2014/08/12/windows-server-2012-r2-dhcp-expired-leases-not-getting-scavenged/

    Then if necessary you should Increasing the number of IP addresses;

    https://support.microsoft.com/en-us/kb/255999

    Also you can check this ms article details about the issue;https://technet.microsoft.com/en-us/library/dn800668(v=ws.11).aspx


    This posting is provided AS IS with no warranties or guarantees,and confers no rights. Best regards Burak Uğur

    Thursday, August 25, 2016 8:37 AM
  • Hi Seyed,

    Just want to confirm the current situations.

    Please feel free to let us know if you need further assistance.

    Best Regards,

    John


    Please remember to mark the replies as an answers if they help and unmark them if they provide no help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

    Monday, September 5, 2016 2:06 AM
  • hi again.

    I use one Mikrotik Device in my network and thats the problem. the conflict dhcp in configuration.

    thanks

    Monday, October 17, 2016 6:29 AM