The switch control processor (SCP) provides the distributed connection setup for a network of ATM switches. The SCP primarily provides management access through SNMP and is responsible for storing and updating all SNMP management information. The SCP is also responsible for monitoring the environmental conditions of the switch, and for reporting events such as malfunctioning fans, overheated power supplies, etc. It should be noted that the SCP is not involved in the actual cell switching: this task is up to the switch fabric(s) (boards). The ASX-200WG is the only switch type that does not support a dual SCP configuration. When two SCPs are installed in a switch board, the switch recognizes their presence and automatically runs in dual SCP mode, providing for failover support. In this case the SCPs are hot-swappable. In the event of a failure on the controlling SCP, the standby SCP takes over. If PVP/PVC connection preservation is enabled, all PVPs and PVCs listed in the configuration database (according to the last synchronized status) and found to be intact in the hardware are maintained without disruption of cell flow.