If you use the round-robin search functionality and the naming service error detection functionality concurrently, when an error occurs on one node, the failed node can be easily separated.
The following figure shows the communication when the round-robin search functionality and the naming service error detection functionality are used concurrently.
Figure 2-14 Communication when the round-robin search functionality and the naming service error detection functionality are used concurrently
If an error is detected in a specific naming service when a name is looked up, the round-robin search functionality switches the communication to a naming service with which communication is possible.