Cisco Systems 12406 series, 12006 series manual Product Overview Route Processors

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Chapter 1 Product Overview

Route Processors

The Cisco IOS software images are stored in Flash memory. Two types of Flash memory ship with the PRP:

1.Onboard Flash memory—Ships as a single in-line memory module (SIMM). This Flash memory contains the Cisco IOS boot image (bootflash) and is not field replaceable.

2.Flash disk—The PRP ships with a Flash disk that can be installed in either Flash disk slot. (See Figure 1-9.) The Flash disk contains the Cisco IOS software image.

Storing the Cisco IOS images in Flash memory enables you to download and boot from upgraded Cisco IOS software images remotely, or from software images that reside in PRP Flash memory.

Cisco 12000 Series Routers support downloadable system software for most Cisco IOS software upgrades. This enables you to remotely download, store, and boot from a new Cisco IOS software image. The Cisco IOS software runs from within the SDRAM of the PRP.

Figure 1-9shows the locations of the various hardware components on the PRP.

	Cisco 12006 and Cisco 12406 Router Installation and Configuration Guide
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Contents Product Overview IntroductionProduct Description Cisco 12006 and Cisco 12406 router Front View Product Overview Product Description Product Overview Product Description Cisco 12006 and Cisco 12406 router Rear View RP and Line Card Slots Physical and Functional DescriptionChassis Chassis Backplane Switch Fabric Card SlotsAlarm Card Slots Power CoolingMultigigabit Crossbar Switch Fabric Switch Fabric Card TypesNonredundant and Redundant System Configurations Switch Fabric Switching Capacity and Router Type Switch Fabric RedundancyDevice Discovery Maintenance BusPower-Up/Down Control Code Download DiagnosticsEnvironmental Monitoring and Alarms Route Processors Route Processor FunctionsRoute Processor Types Gigabit Route ProcessorProduct Overview Route Processors GRP Layout GRP Memory Components Type Size Quantity Description LocationSram Reset AUX Coll RX Link MII System Status LEDsSoft Reset Switch GRP Alphanumeric LED Displays Partial FaceplatePcmcia Slots Asynchronous Serial PortsEthernet Port Performance Route Processor Performance Route Processor Front ViewProduct Overview Route Processors PRP Horizontal Orientation PRP Memory Components SdramSdram Flash Disk Size Product Number Soft Reset Switch Flash Disk Slots Ethernet PortsLine Cards 10 Sample Line Cards Alarm Cards AlarmAlarm Card Status Alarm Output FunctionClock and Scheduler Card and Switch Fabric Card Status Alarm Relay Contact Connector Power SubsystemsPower Source Monitoring AC Power Subsystem AC PDU12 AC Power Distribution Unit AC-Input Power Supply 13 AC-Input Power SupplyProduct Overview Power Subsystems DC Power Subsystem LED Label Function State Description14 DC Power Distribution Unit Power a DC-Input Power Entry Module16 DC-Input Power Entry Module LED Label Color Function Power Distribution Blower ModuleTop view Air Filters 18 Air Filter LocationsCable-Management System 19 Chassis Cable-Management System Technical Specifications Field-Replaceable Units