I'm a newbie for microsoft technologies and I'm having problems in connectivity part for SQL Server 2014. This is probably an easy issue but I'm stuck.
I've 4 servers. One of them is the Active Directory Domain Controller, one is the application server and the others are being used for SQL Servers. Since it's a connectivity issue, IP's for servers are; -AD DC : 10.6.0.100 ( Also the DNS Server ) -APP : 10.6.0.110 -SQL 1 : 10.6.0.120 -SQL 2 : 10.6.0.121
I've successfully created a failover cluster (DBCLUSTER) and set the IP address of the FC as 10.6.0.130( which is not an actual server IP, I really don't get this part.. ).
Later, I've created an AlwaysOn Availability Group for sql servers. I've successfully created the AG without listener. I could connect to servers from each other, database syncs without problem. Then, I've created a listener (AG-LISTENER) and set it's ip as 10.6.0.131 ( which is not an actual server IP, again? ) and set it's port to 5525. It gave no problems.
So I wanted to test connectivity. When I wanted to make connections from APP server to directly SQL 1or SQL 2, I can connect without problem. But when I try to connect to AG-LISTENER, it cannot find it on network. When I check the DNS records. I can see it as it's being hosted on 10.6.0.131.
When I tried to ping to AG-LISTENER from AD-DC, APP, SQL 2 servers, it responds that the destination host is unreachable (it's pinging 10.6.0.131 but the response comes from the IP's of AD-DC, APP and SQL 2 servers). It can connect from SQL 1 server, which is the primary for AG.
I've checked the firewalls, there's no problem. But I think this is an network issue which I have no clue.
PS: Servers are operating on Windows Server 2012 and are not being hosted on Azure.