DHCP server on my main CCM server is having issues.
The error report is the following:
The DHCP/BINL service on this workgroup server has encountered another server with IP Address, 10.x.x.x, belonging to the domain xxxxx.
A little background. Our main DHCP server for our company went down a few weeks back, and weve been having this problem since we have brought it back up (as a new rebuit server).
We can workaround this problem, by stopping DHCP on the main server and starting DHCP Server on my CCM server. We can then start the DHCP service back up on the main server. This resolves the immediate problem (phones grab ip's and are fine untill a switch goes down, or they loose connection and try to renew their ip, and get stuck at configuring ip).
When you rebuilt your main DHCP server, did you bring it back up online with a new name and new IP or old name, old IP...etc?
What you probably want to do is disable the DHCP scopes on the server you want to be the backup DHCP server. Then if the main DHCP server goes down, you can just activate the scopes. You don't want 2 active DHCP severs severing the same subnet.
The old Server was running on nt 4.0 and was serving DHCP off that.
The new server is 2000. (no one told me the OS change)
Checking M$ ive found the following
Protecting Against Improper Use of Workgroup DHCP Servers
When a DHCP server that is not a member server of the domain (such as a member of a workgroup) comes up, the following happens: The server broadcasts a DHCPINFORM message on the network. Any other server that receives this message responds with DHCPACK message and provides the name of the directory domain it is part of. If a workgroup DHCP server detects another member DHCP server of a domain on the network, the workgroup DHCP server assumes that it is unauthorized on that network and does not service requests. If the workgroup DHCP server detects the presence of another workgroup server, it ignores it; this means that there can be multiple workgroup servers active at the same time, as long as there is no directory service.
Even when a workgroup server comes up and finds itself allowed to run (because no other domain member server or workgroup server is on the network), it continues to probe DHCPINFORM every five minutes. If an authorized domain member DHCP server comes up later, the workgroup server becomes unauthorized and stops servicing.
so.. I'm trying to find out if there is anyway to disable DHCPINFORM?
Or it looks like im going to have to have my servers join the domain (which i really do not want, due to security reasons)
The DHCP Authorization Process Occurs Frequently or, in Some Cases, Occurs Too Often, Which Causes Server Performance Problems
In versions of Windows 2000 that are earlier than Windows 2000 SP2, the Active Directory querying process is inefficient. The Active Directory querying process can consume up to 1 megabyte (MB) of network bandwidth for each DHCP server if you have approximately 800 authorized DHCP servers. This process can consume most of the network bandwidth if you are connected over a slow wide area network (WAN) link.
The Active Directory querying process has been optimized in Windows 2000 SP2, which results in about 10 packets for each authorized server regardless of the number of authorized DHCP servers. Also, a registry entry is added to disable the Rogue Detection feature. To disable the Rogue Detection feature: 1. Apply the latest service pack for Windows 2000 to the DHCP server. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
2. WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.
These are the paths to get to each CCX logs through CLI. They may be helpful if you are having issues accessing RTMT or downloading logs through it.
If you want to download them you have to prefix "file get " and you can add one of the options (re...