Prp Memory Components - Cisco XR 12404 Installation Manual

Route Processor

PRP Memory Components

Table 1-3 PRP-2 Memory Components
Type Size
1
SDRAM 2 GB (default)
or 4 GB
(optional)
3
SRAM 2 MB (fixed)
4
NVRAM 2 MB (fixed)
HDD 40 GB
Flash 2 GB or 4 GB
memory (optional)
Compact
Flash
4 MB Boot
ROM
Flash disks
GB (default)
or 4 GB
(optional)
1 GB CF
1. Default SDRAM configuration is 2-GB for PRP-2. Bank 1 (U15) must be populated first. You can use one or both banks to
configure SDRAM combinations of 2 GB and 4 GB for the PRP-2. 1.5-GB configurations.and DIMM devices that are not
from Cisco are not supported.
2. If both banks of the PRP-2 are populated, bank 1 and bank 2 must contain the same size DIMM.
3. SRAM is not user configurable or field replaceable.
4. NVRAM is not user configurable or field replaceable.
5. ATA Flash disks are supported in the PRP-2.
6. Optional PRP-2 hardware. Compact disks that are not from Cisco are not supported.
Cisco XR 12404 Router Installation Guide
1-12
This section describes various types of memory used on the PRP to support router
functions. Table 1-3 provides a quick reference of the different types of memory,
and Figure 1-8 shows the location on the PRP board.
Quantity Description
1 or 2 2-GB or 4-GB DIMMs (based on desired
SDRAM configuration) for main Cisco IOS
XR software functions
— Secondary CPU cache memory functions
1 System configuration files, register settings,
and logs
1 Contains log and crash information for
specific Cisco IOS XR versions.
1 Contains Cisco IOS XR boot image
(bootflash), crash information, and other
user-defined files
1 Stores the ROMMON minimum boot image
(MBI).
5
2 1 or 2 Contains Cisco IOS XR software images,
system configuration files, and other
user-defined files on up to two flash disks
6
1 Contains large Cisco IOS XR software
images
Chapter 1 Cisco XR 12404 Router Overview
Location
U15 (bank 1)
U18 (bank 2)
—
—
—
P3
—
Flash disk
slot 0 and
slot 1
—
2
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