Hi Mike, I've only had to change a SQL 2000 Active / Active Cluster IP and it involves some additional steps for SQL Virtual Names. It's been over 5 years since I built an Exchange 2000 cluster, but I do not recall if Exchange has any dependencies (I would probably post this to the Exchange list and I am cc'ing them as well) Take a look at : Exchange Server 2003 Cluster Configuration Checklist http://www.microsoft.com/technet/itsolutions/msit/operations/exchclustercklist.mspx?pf=true Changing the IP address of network adapters in cluster server http://support.microsoft.com/kb/230356/EN-US/ Or in PDF format at: http://www.maned.com/support/knowledge_base/Roundhouse/Recommended_Reading/Q230356.pdf Also just in case you ever have to change it on a SQL: How to change the network IP addresses of SQL Server virtual servers http://support.microsoft.com/kb/244980/en-us Hope this helps, Sincerely, Jose Medeiros MCP+I, MCSE, NT4 MCT 408-765-0437 Direct 408-449-6621 Cell -------------------------------------------------------------------------------------------- ----- Original Message ----- From: "Mike Newell" <mike.newell@xxxxxxxxxxxx> To: <ActiveDir@xxxxxxxxxxxxxxxxxx> Sent: Sunday, June 04, 2006 12:53 PM Subject: [ActiveDir] Change private IP on a cluster Doh! Didn't mean to let this go without the OT:. Sorry. ________________________________ From: ActiveDir-owner@xxxxxxxxxxxxxxxxxx on behalf of Mike Newell Sent: Sun 6/4/2006 11:40 AM To: ActiveDir@xxxxxxxxxxxxxxxxxx Subject: [ActiveDir] Change private IP on a cluster Hey, I have an Exchange 2003 active/passive cluster on Windows 2003 and I need to change the private ip on both nodes. I realize that while I'm changing the IP the nodes will not talk to each other and likely kick the passive node off or stop the cluster service for a few minutes on the passive node. Is there anything else I will need to do or look out for? I don't *think* this is a big deal but since it's a production cluster, and I've never had to do this, I thought I would check before I tried it. Thanks again. Mike.