Go Back   TechArena Community > Technical Support > Computer Help > Windows Server > Windows Server Help
Become a Member!
Forgot your username/password?
Tags Active Topics RSS Search Mark Forums Read

Sponsored Links



DHCP server gets filled with BAD_ADDRESS

Windows Server Help


Reply
 
Thread Tools Search this Thread
  #1  
Old 26-06-2007
Anders
 
Posts: n/a
DHCP server gets filled with BAD_ADDRESS

Hello, I noticed that all available IP adresses from the DHCP IP range lease
were depleted as it was full of "BAD_ADDRESS -This address is already in use"
entries and as I deleted it all they insist on returning after 5min. I
investigated this error message and it seems it is the result from statically
assigned IP addresses that already exist on the network but I really cannot
see how we would end up with 100+ static entries from one day to another.
(We're dealing with a rather small network of about 100 clients)

Do you have any ideas how to troubleshoot this so I can find out what is
causing my DHCP-server to act this way?
BTW, I do not know if it is significant for the troubleshooting but the
indicated unique IDs (MAC addresses) in the Win2003 server is a 8-digit value
with an increasing value pattern of xxxxc80a


Reply With Quote
  #2  
Old 26-06-2007
Robert L [MVP - Networking]
 
Posts: n/a
Re: DHCP server gets filled with BAD_ADDRESS

Make sure the DHCP server is not multihomed computer and you don't have two DHCP servers in the network. This search result may help,

Windows ErrorsBad_address entry on a DHCP Server ?€œCannot access folder because the path is too long or deep?€? Delayed Write Failed ...
Reply With Quote
  #3  
Old 27-06-2007
Anders
 
Posts: n/a
Re: DHCP server gets filled with BAD_ADDRESS

Well, the DHCP server IS a multihomed computer but the secondary NIC is
statically assigned and intended for backup operations only.
In order to spot any rouge servers I used the MSOFT utility DHCPLOC and
after clearing the erranous DHCP lease entries I started to listen on one
network interface with the following result: (Excerpt)

14:02:09 OFFER (IP)10.200.0.157 (S)10.200.0.11 ***
14:02:09 ACK (IP)10.200.0.157 (S)10.200.0.11 ***
14:02:15 ACK (IP)10.200.0.157 (S)10.200.0.11 ***
14:02:25 OFFER (IP)10.200.0.158 (S)10.200.0.11 ***
14:02:30 OFFER (IP)10.200.0.158 (S)10.200.0.11 ***
14:02:30 ACK (IP)10.200.0.158 (S)10.200.0.11 ***

Interestingly I noticed that these IP offers corresponded to the increasing
BAD_ADDRESS entries at the DHCP server and the (S)Server is the valid DHCP
server and nothing else.
Somehow the DHCP server seems to offer and also consume all remaining
addresses and I cannot see why.
Reply With Quote
  #4  
Old 27-06-2007
Anders
 
Posts: n/a
Re: DHCP server gets filled with BAD_ADDRESS

P.S. The three stars(***) should indicate an unauthorized server but server
10.200.0.11 is indeed authorized so now I am really confused.
Reply With Quote
Reply

  TechArena Community > Technical Support > Computer Help > Windows Server > Windows Server Help
Tags: , , , ,



Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads for: "DHCP server gets filled with BAD_ADDRESS"
Thread Thread Starter Forum Replies Last Post
How to Install DHCP server on Windows Server 2008 Elizabeth Allen Small Business Server 2 24-01-2011 04:52 AM
How to Install and Configure DHCP Server in Ubuntu Server Anirvinya Operating Systems 5 10-02-2010 04:29 AM
how to migrate DHCP settings from server 2003 to server 2008 Imran Windows Server Help 3 01-09-2009 12:57 AM
Rebuilding damaged a DHCP server (Windows server) Renfred Networking & Security 2 14-11-2008 04:58 PM
DHCP on SBS 2003 - BAD_ADDRESS in DHCP lease list haritable Small Business Server 2 26-02-2008 11:47 PM


All times are GMT +5.5. The time now is 03:06 PM.