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Performance Route Processor Installation and Configuration Guide
OL-11656-01
Important Information
PRP Redundancy
When two PRPs are installed in a Cisco 12000 Series Router, one PRP is the
active PRP and the other is a backup, or standby, PRP. If the active PRP fails or is
removed from the system, the standby PRP detects the failure and initiates a
switchover. During a switchover, the standby PRP assumes control of the router,
connects with the network interfaces, and activates the local network management
interface and system console.
Note If your system includes redundant PRPs, both PRPs should be of the same type
(PRP-1 or PRP-2) and have the same memory size. Redundancy is not supported
when using a Gigabit Route Processor (GRP) and a PRP in the same chassis.
Cisco strongly recommends that you avoid configuring your router using mixed
route processor cards. Refer to the Route Processor Redundancy Plus for the
Cisco 12000 Series Internet Router publication for more information on
redundancy.
Cisco IOS Software Requirements
For software configuration information, refer to the Cisco IOS software
configuration and command reference publications for the installed Cisco IOS
Release. Also refer to the Cisco IOS software release notes for additional
information.
The PRP is compatible with Cisco IOS Release 12.0(22)S or later.
The show version and show hardware commands display the current hardware
configuration of the router, including the system software version that is currently
loaded and running. For complete descriptions of show commands, refer to the
Cisco IOS Configuration Fundamentals Configuration Guide and the Cisco IOS
Configuration Fundamentals Command Reference.