Cisco Systems OL-11497-03 manual Product Overview Route Processors

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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