hi i am bhaskar, we have a domain named some xxxx.ed and it is our root domain.its running on windows server 2003.i have added new tree in that same forest.new tree name is some yyyy.ed dns,dhcp is running on xxxx.ed and it has 3 lan cards. dns is running on yyyy.ed i have 20 client system running on windows xp 64-bit.i want to join these client systems to my yyyy.ed new tree.but ipaddress is assigning by dhcp that is by xxxx.ed root domain so i want to join these clients systems to my yyyy.ed domain but client pc's are getting ipaddress from dhcp by xxxx.ed root domain.how can i add clients to my yyyy.ed domain ? in the dhcp scope i have to specify alternate dns ip adderss ? once scope is created how to edit it to add alternate dns ipaddress in windows server 2003 ?Bhaskar

Hello, as I see this server is also a DC. Use multiple NIC cards / IP addresses for DCs is not recommended as multihoming DCs is not recommended. More here: http://blogs.dirteam.com/blogs/acefekay/archive/2009/08/03/multihomed-dcs-with-dns-rras-and-or-pppoe-adapters.aspx Please use one IP address and disable all NIC cards except one. For DHCP add your domain suffix as a DHCP option. For alternate IP addresses, they have to be added manually and not via DHCP. 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 IT Professional: Enterprise Administrator Microsoft Certified IT Professional: Server Administrator

Hi Mr X, ok my xxxx.ed root domain is having some 10.1.x.x ipaddress and my new tree domain is having 192.168.3.x ipaddress but client pc's will get ipaddress through dhcp.so in the scope i have to mention alternate dns ipaddress ? where to add my domain suffix as a dhcp option ? one doubt... after installing dns and after adding client pc's to domain then the client host records automatically updates in forward lookup zones..but how can they update in reverse lookup zone ? manually we have to add pointer records or is there any possibility to update reverse lookup zones automatically ?Bhaskar

Hello, ok my xxxx.ed root domain is having some 10.1.x.x ipaddress and my new tree domain is having 192.168.3.x ipaddress but client pc's will get ipaddress through dhcp. Here what I have understood is that you are using two domains. If client computers of both domains are using the same subnets then here you will have problems with DHCP configuration with exactly DNS suffixes. so in the scope i have to mention alternate dns ipaddress ? Here you have to separate computers of each domain using different subnets. In each subnet enable DHCP and let DHCP servers give as DNS servers the used DNS server for the used domain (For computers of domain A, add them to subnet 1 and configure the DHCP server to send the correct DNS suffix and the used DNS servers of domain A. Similar thing with users of domain B but here use subnet 2 and add DNS servers of domain B). where to add my domain suffix as a dhcp option ? one doubt... Proceed like I mentioned. after installing dns and after adding client pc's to domain then the client host records automatically updates in forward lookup zones..but how can they update in reverse lookup zone ? manually we have to add pointer records or is there any possibility to update reverse lookup zones automatically ? Make sure that they are using correct DNS servers and PTR records will be update automatically. 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 IT Professional: Enterprise Administrator Microsoft Certified IT Professional: Server Administrator