Cisco Systems XR 12406 manual Physical and Functional Description, Route Processor

Chapter 1 Cisco XR 12406 Router Overview

Physical and Functional Description

Physical and Functional Description

The following are the main components that make up the Cisco XR 12406 Router:

•One route processor with a second (redundant) route processor option

•Up to 5 line cards (4 if there are redundant route processors)

•2 clock scheduler cards (CSCs)

•3 switch fabric cards (SFCs)

•2 alarm cards

•2 power modules

•Backplane and maintenance bus

•Blower module

•2 air filters

These components and their functions are described in this section. See Chapter 5, “Maintaining the Router” for instructions to remove and replace the FRUs.

Route Processor

The route processor for the Cisco XR 12406 Router is the Performance Route Processor (PRP-2). For detailed information about the Performance Route Processor, refer to the Cisco document, Performance Route Processor Installation and Configuration Guide.

The PRP-2 performs the following primary functions:

•Executes routing protocol stacks

•Performs all protocol communications with other routers

•Builds and distributes forwarding information to all line cards

•Uploads the operating system software images to all installed line cards during power-up

•Provides out-of-band system console and auxiliary ports and an Ethernet port for router configuration and maintenance

•Monitors and manages the power and temperature of system components such as line cards, power supplies, and fans

	Cisco XR 12406 Router Installation Guide
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