We have multiple instances on single node of the AlwaysOn setup, all are configured as AOAG. Right now we are connecting using the Listener\InstanceName. The listeners for each AG is having a dedicated port designated. This is why we cannot connect just by using the Listener without the port or InstanceName.
I wanted to configure in such a way that just giving the AG_Listener would be enough to connect without using the port explicitly.
Example : AG-SQL001 instead of AG-SQL001,Port_Number
Can this be done ? If yes then how?