A process giving a client the capability of fixing the time within which it may attempt to connect itself to a standby server and a method thereof are provided. The client records the length of time preceding every successful-connection to at least one standby server within a predetermined period, determines an average connection setup time relating to the at least one standby server calculated from all the recorded connection setup times, detects in real time whether the client is successfully connected to a master server, and switches the connection attempts of the client away to each standby server in turn, according to the average connection setup time applying to each standby server respectively, once the client has lost its connection with the master server.