Chapter 1 Overview
Supported Devices and Configurations
1-6
Cisco Redundant Power System Hardware Installation Guide
OL-3654-01
Redundant with Reboot
By using a mode of operation called redundant with reboot, you can connect more
hubs and switches to the Cisco RPS and thereby extend its capacity or provide
additional redundancy. 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. However, this
configuration is not generally recommended, because a power supply failure will
cause an interruption while the hub or switch reboots.
The redundant-with-reboot configuration is shown in Figure 1-3, where a
straight-through one-to-one cable connects an external switch or hub to the
Cisco RPS while the device is powered by its own internal power supply (the
device AC power plug is connected).
Figure 1-3 Redundant-With-Reboot Configuration
In this configuration, one Cisco RPS can support four devices. The Cisco RPS and
the external device internal power supply are both connected.
External devices
150W or less
DC output
AC power cords
AC power strip
AC input
DC
DC
AC
AC
DC
DC
Cisco RPS
12052
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General