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Cisco XR 12404 Router Installation Guide
OL-13830-02
Chapter 1 Cisco XR 12404 Router Overview
Route Processor
Ta b l e 1-6 PRP3 DDR2 DRAM Configuration
PRP SRAM
Static Random Access Memory (SRAM) provides 2 MB of secondary CPU cache
memory. Its principal function is to act as a staging area for routing table updates,
and for information sent to and received from the line cards. SRAM is not
user-configurable and cannot be upgraded in the field.
PRP NVRAM
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.
PRP Flash Memory
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
all
ow 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 on PRP-2:
• Onboard flash memory (called bootflash)—Contains the Cisco IOS boot
image
• Flash memory disks (or cards)—Contain the Cisco IOS software image
Total SDRAM SDRAM Sockets Number of DIMMs
4 GB U8 (bank 1)
U10 (bank 2)
Two 2 GB DIMMs
8 GB U8 (bank 1)
U10 (bank 2)
Two 4 GB DIMMs
todd.book Page 17 Monday, March 16, 2009 2:47 PM
- March 2009 1
- CONTENTS 5
- 3 Installing the Router 3-1 6
- Contents 7
- Changes to This Document 9
- Audience 10
- Document Conventions 12
- Router Overview 15
- Route Processor 18
- 1 3 4 52 20
- BITS 1 AUX CONSOLE 22
- PRP-3 LEDs 23
- PRP Reset Switch 23
- PROCESSOR 24
- PRP Memory Components 26
- PRP SDRAM 30
- PRP SRAM 31
- PRP NVRAM 31
- PRP Flash Memory 31
- PRP-3 Compact Flash 32
- Supported Line Cards 33
- Q OC-3/STM-1 MM POS 34
- Q OC-3/STM-1 SM IR POS 34
- Alarm Functionality 35
- Power Source Monitoring 36
- Power Entry Modules 37
- Figure 1-12 AC PEM Components 38
- Fan Tray Assembly 40
- Figure 1-14 Fan Tray Assembly 41
- Cable Management System 42
- Maintenance Bus 45
- Code Download 46
- Diagnostics 46
- Preparing for Installation 47
- Safety and Compliance 48
- General Safety Guidelines 49
- Router Chassis 51
- Laser Safety 52
- Lifting Guidelines 52
- Safety with Electricity 54
- Rack Mounting Clearance 55
- Multiple Routers in a Rack 55
- 23.2657.761 56
- 18.95 in. 17.38 in 56
- Environmental Guidelines 57
- Temperature and Humidity 58
- Power Connection Guidelines 59
- Site Wiring 61
- Distance Limitations 62
- Site Preparation Checklist 63
- Installing the Router 66
- Required Tools 67
- Compliance 74
- Compliance (PRP-3 Installed) 75
- Figure 3-6 Cable Lug 75
- Figure 3-7 Crimping the Lug 76
- 1. Baud to 9600 80
- 2. Data bits to 8 80
- 3. Parity to no parity 80
- 4. Stop bits to 2 80
- PRP Console Port Signals 82
- PRP Auxiliary Port Signals 83
- PRP Ethernet Connections 86
- RJ-45 connector 87
- Figure 3-21 AC PEM LEDs 95
- Figure 3-22 DC PEM LEDs 96
- Figure 3-23 CSF LEDs 97
- Ta b l e 3-6 CSF LEDs 97
- Ta b l e 3-8 CSF MBus LEDs 97
- Manually Booting the System 98
- External Network Interface 98
- Identifying Startup Problems 100
- OL-13830-02 101
- Figure 4-1 AC PEM 104
- Figure 4-2 DC PEM and PDU 108
- Troubleshooting the RP 112
- ETH 1ETH 0 115
- Single PRP-3 Scenario 117
- PRP-3 Alphanumeric LEDs 117
- Dual PRP-3 Scenario 119
- Maintaining the Router 125
- Tools and Equipment 126
- Powering Off the Router 127
- CONSOLIDATED SWITCH FABRIC 128
- Step 12 Power on the PEM 140
- Step 12 Power on both PEMs 150
- Fabric Alarm 153
- Fabric Card 160
- Technical Specifications 163
- Product Architecture 164
- Specifications 165
- Compliance Information 167
- Ta b l e A-5 Immunity Tests 168
- FCC Class A Compliance 170
- CISPR 22 171
- Europe—EU 172
- VCCI Class A Notice for Japan 172
- Class A Notice for Hungary 173
- Class A Notice for Korea 174
- Numerics 175
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