Cisco 4000 - Manual (Page 16)

1-16 Cisco 4000 Series Installation Guide
Cisco RPS Support
Fully Redundant Power
The Cisco RPS can provide a fully redundant power source for up to two Cisco 4000 series
routers. You can use a two-to-one cable to connect up to two external devices to the four
DC output power modules on the rear panel of the Cisco RPS, as shown in Figure 1-6. The
two-to-one cable is a Y-shaped cable with two connectors at one end of the cable and one
connector at the other end. Two connectors at one end of the Y-shaped cable connect to two
DC output power modules. The other end of the cable connects to one external device.
When using two-to-one cables, 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.
Figure 1-6 Fully Redundant Configuration
External devices
150W or less
DC output
AC input
DC DC
AC
AC
DC DC
Cisco RPS
NM3998