Routing action strings multiple instances

When a failover occurs, client connections are reset, and the ownership of the AG Listener moves to the SQL Server instance that takes over the primary replica role. If this parameter is set to true, the client will attempt the connections in parallel enabling faster connectivity and if necessary, faster client failovers: Server=tcp:MyAgListener,1433 Database=Db1 IntegratedSecurity=SSPI MultiSubnetFailover=True An important connection string parameter to consider using is MultiSubnetFailover. Your client will attempt to connect to each of the IP addresses in turn until it either gets a connection or until it reaches a connection timeout. Your application connection operates in the same manner it always has, however, instead of pointing towards a specific server in your connection string, you point towards the AG Listener.ДЄG Listeners can only be connected to using TCP, and are resolved by your local DNS to the list of IP addresses and TCP ports that are mapped to the VNN. All of the IP addresses that are supplied while configuring the AG Listener are registered in DNS under the same virtual network name.ДЄfter you have created your AG Listener, you must make sure your clients can connect. Your Virtual Network Name (VNN) is registered in DNS and is always owned by the SQL Server instance where the primary replica resides. ALTER AVAILABILITY GROUP ADD LISTENER N'ListenerName' ( WITH IP ( ( N'10.x.x.x', N'255.255.255.0' ) ), PORT = 1433 ) AG Listener Connection Strings

Routing action strings multiple instances