Which command is used to set the CCP protocol to Multicast?

The command to set the CCP (Cluster Control Protocol) to Multicast is indeed cphaconf set_ccp multicast. This command is specifically designed for configuring settings related to the ClusterXL environment, which encompasses multicast communication between cluster members. By enabling multicast, the cluster can optimize traffic management and reduce the bandwidth consumed by control packets, improving overall network performance.

Using the cphaconf command for this purpose ensures that changes are made at the configuration level, which is crucial in cluster environments where consistent communication is key for failover processes and synchronization. The multicast setting allows multiple cluster members to receive control information simultaneously, streamlining operations and enhancing the responsiveness of the cluster.

In contrast, other options relate to either a different configuration or a command that does not set the CCP protocol correctly. Understanding the specific functions of these commands is essential for effective cluster management and ensuring robust security architecture.