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Chapter 4
Commands for the Cisco uBR10012 Router
Route Processor
The second component of the PRE is the route processor (RP), a high-speed, conventional
microprocessor that has special interfaces to the FP:
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The RP also includes such standard Cisco IOS facilities as Flash memory, NVRAM for storing
configuration files, and Ethernet connections for network management.
OL-1581-08
A high-speed direct memory access (DMA) channel that sends packets back and forth between the
FP and the RP. Packets such as route updates that are not processed by the FP are sent through this
link to the RP. Similarly, the RP sends packets by passing them to the FP for transmission to line
cards.
The RP also has memory-mapped access to all of the state information used by the XMCs on the FP.
The RP is responsible for configuring the tables and lists used by the XMCs.
Performance Routing Engine Overview
Cisco Broadband Cable Command Reference Guide
4-3
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