About DHCP server on Windows 2000 with SP4

[Nicholas]

We use DHCP to provide IP addresses, Default Gateway, WINS server
address, DNS server address and Subnet Mask on our network. The DHCP
service runs on our PDC which provides addresses to about 90 Windows
Windows XP, Windows 2000 Professional and Redhat Linux clients. The
lease period is 5 days.

We are having a great deal of problems with duplicate IP addresses
being assigned especially after a long weekend. Looking at the
addresses assigned through the DHCP Manager shows a fair number of
computer names listed as "Bad_Address". Trying to release and renew
the IP address fails.
Sometime Windows client and Linux client may get an sam IP address.


Any have any ideas?

Thanks in advance.

 

[Marina Roos]

How many nics in the server?
Do you have options 003, 006 and 015 set in DHCP-server, Scope options?
Are all clients set to obtain an IP automatically from the DHCP-server?

Marina

 

[Alan Wood [MSFT]]

Hi

The BAD_ADDRESS means that the DHCP server tried to hand the address out,
then did a gratitius arp and another system on the network had that IP
address already, so we mark as BAD_ADDRESS. Make sure you set your IP
Conflict detection on the server to keep anymore duplicate IP addresses
from being handed out.


161430 DHCP: Detecting and Flagging Duplicate IP Addresses
http://support.microsoft.com/?id=161430


Also, as Marina already mentioned:

310844 Multihomed DHCP Server Assigns Duplicate IP Addresses
http://support.microsoft.com/?id=310844

Thanks!

Alan Wood[MSFT]

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