Physical and functional description, Route processor – Cisco XR 12406 User Manual
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Cisco XR 12406 Router Installation Guide
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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
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 and PRP-3 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