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Cisco XR 12410 and Cisco XR 12810 Router Installation Guide
OL-17441-01
Chapter 1 Product Overview
Line Card and Route Processor Overview
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 1-14 shows the location on the PRP board.
Ta b l e 1-3 PRP 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
—
- Router Installation Guide 1
- CONTENTS 5
- B Site Log B-1 9
- Contents 10
- OL-17441-01 10
- Changes to This Document 11
- Audience 12
- Document Organization 12
- Document Conventions 13
- Product Overview 15
- AC and DC Power Subsystems 19
- Figure 1-4 AC PEM Components 20
- DC Power Supplies 21
- • 2 alarm cards 23
- Clock Scheduler Card 24
- Alarm Cards and Alarm Display 25
- Line Cards 28
- Route Processor 28
- BITS 1 AUX CONSOLE 33
- PRP-3 LEDs 34
- PRP Memory Components 37
- PRP SDRAM 41
- PRP SRAM 42
- PRP NVRAM 42
- PRP Flash Memory 42
- PRP-3 Compact Flash 43
- XR 12000 Series Router 44
- Horizontal cable 46
- Blower Module 47
- Figure 1-18 Cooling Air Flow 48
- Preparing for Installation 51
- Safety Guidelines 52
- Laser Safety 53
- Lifting Guidelines 55
- Site Requirement Guidelines 56
- Enclosed Rack 57
- Open Rack 57
- Telco Rack 58
- Center-mount 59
- Rack-mount bracket 59
- (attached to rack posts) 59
- 18.95 in 61
- 26.533 in 61
- 7.735 in 61
- 18.798 in 61
- Air Flow Guidelines 62
- Power Connection Guidelines 63
- AC-Powered Routers 64
- DC-Powered Routers 65
- Figure 2-8 DC Power Cable Lug 66
- Site Wiring Guidelines 70
- PRP Auxiliary Port Signals 74
- PRP Console Port Signals 75
- PRP Ethernet Connections 76
- 8 7 6 5 4 3 2 1 78
- Transmission 80
- Installation Overview 85
- Required Tools and Equipment 86
- 1 Front Door Latch 87
- Removing Power Supplies 89
- Removing DC PEMs 90
- Removing the Blower Module 91
- Verifying Rack Dimensions 99
- Reinstalling Power Supplies 109
- Reinstalling AC PEMs 110
- Reinstalling DC PEMs 111
- Air filter door 114
- Clock scheduler card 114
- FAST ETERNET 118
- Alarm display 125
- Troubleshooting Overview 132
- Identifying Startup Issues 134
- Figure 4-1 AC PEM Components 136
- Troubleshooting a DC PEM 140
- 1 3 4 52 6 146
- 1 3 4 52 146
- ETH 1ETH 0 148
- PRP Reset Switch 149
- PROCESSOR 150
- PRP-3 Alphanumeric LEDs 154
- Single PRP-3 Scenario 154
- Dual PRP-3 Scenario 156
- Troubleshooting Line Cards 159
- Figure 4-11 Cooling Air Flow 167
- Blower Module Operation 168
- Power Supply Operation 168
- Overtemperature Conditions 169
- Maintaining the Router 173
- Powering Off the Router 174
- OC-12/STM-4 ATM 178
- Subsystem Components 184
- Figure 5-7 AC PEM Components 186
- Figure 5-11) 192
- Rear panel 193
- AC horizontal trough 193
- DC horizontal trough 204
- Clear plastic covers 204
- Card Cage 212
- Technical Specifications 219
- • chassis only 220
- Router Specifications 224
- Site Log 225
- Appendix B Site Log 226
- Numerics 229
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