Cisco XR 12404 - 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.
Table 1-3 provides a quick reference of the different types of memory,
and Figure 1-8 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 —
todd.book Page 12 Monday, March 16, 2009 2:47 PM