SQL Server 2014 - Replica Server not available I'm new to Sql Server and want to install SQL server alwayson clustering on my test environment. I followed the steps by this site:

On each node I can connect to SQL Server but why my 2nd node is not available so that I can add it as my 2ndary Replica?
According to this site, till "Always-On Availability Group Configuration" everything was successful.
p.s. It seems I cannot add my screenshot as I do not have enough reputation.
Instead of giving the name of the other node, I gave the IP address of the other node. Then everything went well.
BUT what the reason was that it did not accept the name, I still do not know.