The essential means by which state synchronization works to provide failover in the event an...

The essential means by which state synchronization works to provide failover in the event an active member goes down, ccp is used specifically for clustered environments to allow gateways to report their own state and learn about the states of other members in the cluster. Ccp stands for Cluster Control Protocol, and it is a proprietary protocol that runs on UDP port 8116. Ccp is responsible for exchanging state information, health checks, load balancing decisions, and synchronization network configuration between cluster members. The other options are either commands or daemons that are related to cluster operations, but not the protocol itself.