•Fully redundant—Figure 7. The power source is fully redundant because there are two AC input modules and two DC output power modules connected to each external device. If any power module fails, there is a full backup.
Note This configuration is not supported for switches and hubs.
•Redundant with reboot—Figure 8. In normal operation, the hub or switch is powered directly by its AC power connection. If the internal power system of the hub or switch fails, the device powers down for about 30 seconds until the Cisco RPS begins supplying power.
Note Redundancy with reboot works for the following devices only: FastHub 400 series hubs, Catalyst 1900 series and Catalyst 2820 switches, and Catalyst 2900 series and Catalyst 3500 series XL switches.
•Mixed quasi-redundant and fully redundant—Figure 9. Three external devices can be powered, with two in quasi-redundant mode and one in fully redundant mode.
Figure 6 Quasi-Redundant Configuration
AC input
DC output
External devices
150W or less
Figure 7 Fully Redundant Configuration
AC input
