Re: DHCP server on 2003 - Trying to assign an IP out of scope?

That's quite similar indeed! Unfortunately (or maybe fortunately, since the firmware on my router was updated a few months ago), the MAC address in question is a PC, not the router as it was in his case. The particular PC is on the network every day, too, it's not new.

"Merv Porter" <mwport@xxxxxxxxxxxxxxxxxxx> wrote in message news:ey3hvEhRKHA.508@xxxxxxxxxxxxxxxxxxxxxxx
This post sounds similar. The "fix" appears to have been updating the firmware on the router...

How to troubleshoot and discover conflicting LAN IP
http://74.125.47.132/search?q=cache:g9Jqg_tyFeQJ:www.experts-exchange.com/OS/Microsoft_Operating_Systems/Server/SBS_Small_Business_Server/Q_23057592.html+sbs+dhcp+out+of+scope+4199&cd=2&hl=en&ct=clnk&gl=us

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Merv Porter [SBS-MVP]
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"Milhouse Van Houten" <btvs@xxxxxxxxxxxxx> wrote in message news:ec#abSfRKHA.4028@xxxxxxxxxxxxxxxxxxxxxxx
We have but one DHCP server: SBS 2003 R2 SP2. DHCP is disabled on the router.
The only scope: 192.168.1.102 to 149
The server's static IP: 101
Everyone but the server uses DHCP

Four times in the last year with four different machines, we've received Event ID 4199 in tcpip:

"The system detected an address conflict for IP address 192.168.1.101 with the system having network hardware address [MAC here]. Network operations on this system may be disrupted as a result."

*Ten seconds* after the event that happened today, the DHCP log shows that the machine corresponding to the above MAC received a renewal on 192.168.1.102. This was obviously not a case of a rogue static assignment but apparently some type of bug in the DHCP address renewal process.

Is it a coincidence that the addresses are neighboring? Unfortunately, I don't know if that's been the case all along.

The DNS tab on the DHCP server is set for "Dynamically update DNS A and PTR records only if requested by DHCP clients" and "Discard A and PTR records when lease is deleted," which should be defaults.

.

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