Prp Nvram; Prp Flash Memory - Cisco XR 12410 Installation Manual

Chapter 4 Troubleshooting the Installation

PRP NVRAM

PRP Flash Memory

OL-13832-01
Non-volatile Random Access Memory (NVRAM) provides 2 MB of memory for
system configuration files, software register settings, and environmental
monitoring logs. Built-in lithium batteries retain the contents of NVRAM for a
minimum of 5 years. NVRAM is not user configurable and cannot be upgraded in
the field.
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 (bootflash)—Contains the Cisco IOS XR boot image
•
Flash memory disks (or cards)—Contain the Cisco IOS XR software images
•
Table 4-4 lists supported flash disk sizes and Cisco part numbers.
Table 4-4 Supported Flash Disk Sizes
1
Flash Disk Size
2
64 MB
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.
Troubleshooting the Processor Subsystem
Part Number
MEM-12KRP-FD64=
MEM-12KRP-FD128=
MEM-12KRP-FD1G=
Cisco XR 12410 Router Installation Guide
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