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Chapter 1 Cisco XR 12404 Router Overview
Route Processor
PRP NVRAM
PRP Flash Memory
Use flash memory to store multiple Cisco IOS XR software and microcode images that you can use to operate the router. You can download new images to flash memory over the network (or from a local server) to replace an existing image, or to add it as an additional image. The router can be booted (manually or automatically) from any of the stored images in flash memory.
Flash memory also functions as a Trivial File Transfer Protocol (TFTP) server to allow other servers to boot remotely from the stored images, or to copy them into their own flash memory.
The system uses two types of flash memory:
•Onboard flash memory (called
•Flash memory disks (or
Table
Flash Disk Size1 | Part Number |
64 MB2 | |
128 MB | |
|
|
1 GB |
|
|
|
1.Standard Type 1 and Type 2 linear flash memory cards also are supported, although they may not have the capacity to meet the configuration requirements of your system.
2.Default shipping configuration.
| Cisco XR 12404 Router Installation Guide |