I am dealing with a Windows 2003 x64 Server that's a Domain Server w/ DNS and DHCP Servers that has some lingering issues after resolving a serious one. The server has two Ethernet interfaces, but only one was ever actually in use. It was configured to use just the one Ethernet port at time of setup four years ago, and the second one was just disabled. Well, that port decided to fail and it obviously caused all sorts of havok on the network. We managed to get everything working again by disabling the active port, enabling the disabled port, and swapping the static IPs assigned to each port. The problem we are experiencing is that connectivity only works with RRAS disabled... turn back on RRAS and network / Internet access goes down. Not a huge issue, but it does keep their 3rd party software from using a connected faxmodem. Also, the new port responds to pings to both the old and new IP addresses, if that gives any clues. What steps should I go through to get the rest of this sorted out? Thanks! - Lee

Multi-homing a domain controller is asking for problems but this one may help. http://support.microsoft.com/kb/157025 Regards, Dave Patrick .... Microsoft Certified Professional Microsoft MVP [Windows] Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights.

Multi-homing a domain controller is asking for problems but this one may help. http://support.microsoft.com/kb/157025 Regards, Dave Patrick .... Microsoft Certified Professional Microsoft MVP [Windows] Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights.

Hello, I would agree with Dave. It is recommended that a DC have a single IP address and one NIC card enabled (Other ones should be disabled). Also, RRAS is not recommended to run on a DC. Please read Ace article for more details:http://blogs.dirteam.com/blogs/acefekay/archive/2009/08/03/multihomed-dcs-with-dns-rras-and-or-pppoe-adapters.aspx If you still want to keep this setup, I would recommend disabling the DNS registration for the public NIC. Also, go to your DNS system and remove manually all DNS records for the DC assigned to its public NIC. This posting is provided "AS IS" with no warranties or guarantees , and confers no rights. Microsoft Student Partner 2010 / 2011 Microsoft Certified Professional Microsoft Certified Systems Administrator: Security Microsoft Certified Systems Engineer: Security Microsoft Certified Technology Specialist: Windows Server 2008 Active Directory, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Network Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Applications Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows 7, Configuring Microsoft Certified Technology Specialist: Designing and Providing Volume Licensing Solutions to Large Organizations Microsoft Certified IT Professional: Enterprise Administrator Microsoft Certified IT Professional: Server Administrator Microsoft Certified Trainer

Hello, I would agree with Dave. It is recommended that a DC have a single IP address and one NIC card enabled (Other ones should be disabled). Also, RRAS is not recommended to run on a DC. Please read Ace article for more details:http://blogs.dirteam.com/blogs/acefekay/archive/2009/08/03/multihomed-dcs-with-dns-rras-and-or-pppoe-adapters.aspx If you still want to keep this setup, I would recommend disabling the DNS registration for the public NIC. Also, go to your DNS system and remove manually all DNS records for the DC assigned to its public NIC. This posting is provided "AS IS" with no warranties or guarantees , and confers no rights. Microsoft Student Partner 2010 / 2011 Microsoft Certified Professional Microsoft Certified Systems Administrator: Security Microsoft Certified Systems Engineer: Security Microsoft Certified Technology Specialist: Windows Server 2008 Active Directory, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Network Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Applications Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows 7, Configuring Microsoft Certified Technology Specialist: Designing and Providing Volume Licensing Solutions to Large Organizations Microsoft Certified IT Professional: Enterprise Administrator Microsoft Certified IT Professional: Server Administrator Microsoft Certified Trainer

Both ports were never in use at the same time. The first port was used while the second disabled. We merely disabled the troublesome one and enabled the second one. We also swapped their IPs. So I do not think it is multi-homing (not on purpose, anyway)... but something is still set inside the server settings that I think is confusing things, and I'd like to root it out.

I was reffering to RRAS role making it multi-homed. Regards, Dave Patrick .... Microsoft Certified Professional Microsoft MVP [Windows] Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights.