Source IP Hash load balancing uses an algorithm that takes the source and destination IP address of the client and server to generate a unique hash key. This key is used to allocate the client to a particular server. As the key can be regenerated if the session is broken, this method of load balancing can ensure that the client is directed to the same server that it was using previously. This is useful if it’s important that a client should connect to a session that is still active after a disconnection and reconnection.