Hi , I am encountring an error with my windows 2008R2 server, its regarding the heart beat , i have pasted the error below . Please check and advise. Status: unavailable,unknown error (1,722) Sample: 5179 The thresholds in error are: status: not found (1722)

1722 = the rpc server is unavailable. There may be some required ports blocked. Improvements to the cluster ‘heartbeat’ mechanism The cluster ‘heartbeat’, or health checking mechanism, has changed in Windows Server 2008. While still using port 3343, it is no longer a broadcast communication. It is now unicast in nature and uses a Request-Reply type process. This provides for higher security and more reliable packet accountability. Using the Microsoft Network Monitor protocol analyzer to capture communications between nodes in a cluster, the ‘heartbeat’ mechanism can be seen (Figure 13). http://blogs.technet.com/b/askcore/archive/2010/02/12/windows-server-2008-failover-clusters-networking-part-1.aspx Also check out; http://technet.microsoft.com/en-us/library/ff182338(WS.10).aspx Regards, Dave Patrick .... Microsoft Certified Professional Microsoft MVP [Windows]

Hi, Would you please post the full error message? Based on the current situation, you may refer to the following Microsoft KB and TechNet articles for more troubleshooting information: Troubleshooting RPC Endpoint Mapper errors using the Windows Server 2003 Support Tools from the product CD http://support.microsoft.com/kb/839880 Troubleshooting RPC Errors http://technet.microsoft.com/en-us/magazine/2007.07.howitworks.aspx Regards, Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.