Route Processor; Route Processor Overview - Cisco CRS-1 System Description

Route Processor

This chapter describes the route processor (RP) card of the Cisco CRS 8-slot Line Card Chassis Enhanced
router.
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Route Processor
This chapter describes the route processor (RP) card of the Cisco CRS 8-slot Line Card Chassis Enhanced
router. It contains the following topics:

Route Processor Overview

The route processor (RP) card is the system controller for the Cisco CRS 8-slot Line Card Chassis Enhanced
router. It performs route processing and distributes forwarding tables to the MSCs. The RP provides a control
path to each MSC, performs system-monitoring functions, and contains hard disks for system and error logging.
Although the routing system contains two RP cards, only one RP is active at a time. The other RP operates
in standby mode, ready to assume control if the active RP fails. See
72 for information on how the system determines which RP is active and which is standby.
The RP card provides route processing, alarm, fan and power supply controller function in the Cisco CRS
8-slot Line Card Chassis Enhanced router. The RP card controls fans, alarms, and power supplies through the
use of an i2c communication link from the RP card to each fan tray/power supply.
Two RP cards are required per chassis for redundancy—one is active , and the other is standby . An RP card
can be inserted in either of the two dedicated slots in the chassis.
The following figure illustrates the route processor card.
Route Processor, on page 69
Cisco CRS Carrier Routing System 8-Slot Line Card Chassis Enhanced Router System Description
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C H A P T E R
Active and Standby Arbitration, on page
69