Prp memory components – Cisco XR 12404 User Manual
Page 26
Chapter 1 Cisco XR 12404 Router Overview
Route Processor
1-12
Cisco XR 12404 Router Installation Guide
OL-13830-02
PRP Memory Components
This section describes various types of memory used on the PRP to support router
functions.
provides a quick reference of the different types of memory,
and
shows the location on the PRP board.
Table 1-3
PRP-2 Memory Components
Type
Size
Quantity Description
Location
SDRAM
1
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 GB (default)
or 4 GB
(optional)
1 or 2
2-GB or 4-GB DIMMs (based on desired
SDRAM configuration) for main Cisco IOS
XR software functions
U15 (bank 1)
2
U18 (bank 2)
2.
If both banks of the PRP-2 are populated, bank 1 and bank 2 must contain the same size DIMM.
SRAM
3
3.
SRAM is not user configurable or field replaceable.
2 MB (fixed)
—
Secondary CPU cache memory functions
—
NVRAM
4
4.
NVRAM is not user configurable or field replaceable.
2 MB (fixed)
1
System configuration files, register settings,
and logs
—
HDD
40 GB
1
Contains log and crash information for
specific Cisco IOS XR versions.
—
Flash
memory
2 GB or 4 GB
(optional)
Compact
Flash
1
Contains Cisco IOS XR boot image
(bootflash), crash information, and other
user-defined files
P3
4 MB Boot
ROM
1
Stores the ROMMON minimum boot image
(MBI).
—
Flash disks
5
2
GB (default)
or 4 GB
(optional)
5.
ATA Flash disks are supported in the PRP-2.
1 or 2
Contains Cisco IOS XR software images,
system configuration files, and other
user-defined files on up to two flash disks
Flash disk
slot 0 and
slot 1
1 GB CF
6
6.
Optional PRP-2 hardware. Compact disks that are not from Cisco are not supported.
1
Contains large Cisco IOS XR software
images
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todd.book Page 12 Monday, March 16, 2009 2:47 PM