Cisco GRP= Quick guide

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Gigabit Route Processor
Installation and Configuration Note
Product Numbers: GRP-B=, GRP=
Document Order Number: DOC-784339=
This hardware installation and configuration note describes the Gigabit Route Processor (GRP), the
route processor for use in Cisco 12000 Series Routers.
Document Contents
Following are the sections in this document:
•Important Information, page 2
•Product Overview, page 3
•Preparing for Installation, page 10
•Replacing a GRP, page 14
•GRP Boot Process Overview, page 24
•Starting the System and Observing Initial Conditions, page 24
•Verifying Interface Status, page 27
•Configuring the Ethernet Interface, page 28
•Implementing Additional Configuration and Maintenance Tasks, page 30
•Obtaining Documentation, page 53
•Documentation Feedback, page 54
•Obtaining Technical Assistance, page 54
•Obtaining Additional Publications and Information, page 55

2
Important Information
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Important Information
Important Information
This section contains information about the following hardware and software requirements:
•Router Information
•Cisco IOS Software Requirements
•Product Overview
Router Information
For hardware installation and maintenance information on Cisco 12000 Series Routers, refer to the
installation and configuration guide for your router. This includes information on card slot locations and
other general requirements.
Supported Platforms
The GRP operates on all Cisco 12000 series Internet Routers with the following requirements:
•Cisco 12016 and Cisco 12416—GRP plugs into slot 7 in the upper card cage. If the router is
equipped with an optional, redundant GRP, it must be installed in the far left slot of the lower card
cage (slot 8).
•Cisco 12410—GRP plugs into slot 9. If the router is equipped with an optional, redundant GRP, it
must be installed in slot 8.
•Cisco 12406—GRP plugs into any slot; however, slot 5 is recommended. If the router is equipped
with an optional, redundant GRP, it can be installed in any of the remaining five slots.
•Cisco 12404—GRP plugs into any of the five slots in the card cage, but slot 0 (zero) is the
recommended slot for the first GRP. If the router is equipped with an optional, redundant GRP, it
can be installed in any of the remaining slots.
•Cisco 12012—GRP plugs into slot 0 in the upper card cage. In a dual GRP system, the second GRP
is located in slot 11. This is the default factory configuration and is recommended to avoid heat-
related problems. The far right slot labeled Alarm card is reserved for the alarm card.
•Cisco 12008—GRP plugs into any slot in the upper card cage in the Cisco 12008 except the middle
two slots (which are reserved for the CSC cards and labeled CSC 0 and CSC 1).
GRP Redundancy
When two GRPs are installed in a Cisco 12000 Series Router, one GRP is the active GRP, and the other
is the backup, or standby GRP. If the active GRP fails or is removed from the system, the standby GRP
detects the failure and initiates a switchover. During a switchover, the standby GRP assumes control of
the router, connects with the network interfaces, and activates the local network management interface
and system console.
Note If your system includes redundant GRPs, both GRPs should have the same memory size. Redundancy
is not supported when using a GRP and a PRP in the same chassis. Cisco strongly recommends that
you avoid using mixed route processor cards to configure your router. Refer to the Route Processor
Redundancy Plus for the Cisco 12000 Series Internet Router publication for more information on
redundancy.

3
Cisco IOS Software Requirements
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Product Overview
Cisco IOS Software Requirements
For software configuration information, refer to the Cisco IOS software configuration and command
reference publications for the installed Cisco IOS Release. Also refer to the Cisco IOS software release
notes for additional information.
The GRP line card is supported in Cisco IOS Release 11.2(9)GS and later. GRP configurations with
512 MB of route memory are only compatible with Product Number GRP-B=. Cisco IOS Release
12.0(19)S or 12.0(19)ST or later and ROMMON Release 11.2 (181) or later are also required.
The show version and show hardware commands display the current hardware configuration of the
router, including the system software version that is currently loaded and running.
For complete descriptions of show commands, see the Cisco IOS Configuration Fundamentals
Configuration Guide and the Cisco IOS Configuration Fundamentals Command Reference.
Related Documentation
For additional information, refer to these publications:
•Route Processor Redundancy Plus for the Cisco 12000 Series Internet Router
•Cisco IOS Configuration Fundamentals Configuration Guide
•Cisco IOS Configuration Fundamentals Command Reference
•Cisco IOS Release 12.0S Release Notes for Cisco 12000 Series Internet Routers
Product Overview
Information about the Gigabit Route Processor (GRP), its components, functions, and features, and its
use as the system processor for Cisco 12000 Series Routers is presented in the following sections.
Figure 1 shows the front view of the GRP.
Figure 1 Gigabit Route Processor (Front Panel, Horizontal Orientation)
Note In order to maintain Class B EMI compliance, shielded cables must be used on the console and
auxiliary ports of the GRP. An updated version of the GRP (Product Number GRP-B=, Rev. F0
and later) does not require shielded cables for Class B compliance.
GRP Functions
The primary functions of the GRP for Cisco 12000 Series Routers follow:
•Loading the Cisco IOS software on all the installed line cards at power up
•Providing a console (terminal) port for router configuration
SLOT-0
GIGABIT ROUTE PROCESSOR
SLOT-1
COLL
LINK
TX
RX
RJ-45
MII
RESET
AUX
CONSOLE
EJECT
H10760

4
GRP Components
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Product Overview
•Providing an auxiliary port for other external equipment (such as modems)
•Providing an IEEE 802.3, 10/100-megabits-per-second (Mbps) Ethernet port for Telnet functionality
•Running routing protocols
•Building and distributing routing tables to the line cards
•Providing general system maintenance functions
•Communicating with the line cards either through the switch fabric or through the maintenance bus
(MBus)
The MBus connection allows the GRP to download a system bootstrap image, collect or load
diagnostic information, and perform general, internal system maintenance operations. The switch
fabric connection is the main data path for routing table distribution as well as for packets that are
sent between line cards and the GRP.
GRP Components
The GRP contains the following components:
•RISC processor—IDT R5000 Reduced Instruction Set Computing (RISC) processor used for the
CPU. The CPU runs at an external bus clock speed of 100 MHz and an internal clock speed of
200 MHz.
•DRAM—Up to 512 megabytes (MB) of parity-protected, extended data output (EDO) dynamic
random-access memory (DRAM) on two 60-nanosecond (ns), dual in-line memory modules
(DIMMs). 128 MB of DRAM is the minimum shipping configuration for the GRP.
Note GRP route memory configurations of 512 MB are only compatible with Product Number
GRP-B=. In addition, Cisco IOS Release 12.0(19)S or 12.0(19)ST or later and ROMMON
Release 11.2 (181) or later are also required.
•SRAM—512 kilobytes (KB) of static random-access memory (SRAM) for secondary CPU cache
memory functions. (SRAM is not user configurable or field upgradeable.)
•NVRAM—512 KB of nonvolatile RAM (NVRAM). (NVRAM is not user configurable or field
upgradeable.)
•Memory—Most of the additional memory components used by the system, including onboard Flash
memory and up to two Personal Computer Memory Card International Association
(PCMCIA)-based Flash memory cards and advanced technology attachment (ATA) Flash disks.
•Sensors—Air-temperature sensors for environmental monitoring.
Cisco IOS Software
The Cisco IOS software images that run the Cisco 12000 Series Router system reside in Flash memory,
which is located on the GRP in the form of a single in-line memory module (SIMM), and on up to two
Flash cards (called Flash memory cards or Flash disks), which insert into the two slots (slot 0 and slot
1) on the front of the GRP. (See Figure 2.)
Note

5
Cisco IOS Software
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Product Overview
Figure 2 GRP (Horizontal Orientation)
Note The onboard Flash memory (called bootflash)contains the Cisco IOS software boot image, and a
Flash memory card or Flash disk contains the Cisco IOS software image.
Storing the Cisco IOS images in Flash memory enables you to download and boot from upgraded
Cisco IOS software images remotely or from software images that reside in GRP Flash memory.
The Cisco 12000 Series Router system supports downloadable system software for most
Cisco IOS software upgrades, which enables you to remotely download, store, and boot from a new
Cisco IOS software image. The Cisco IOS software runs from within GRP DRAM.
For specific Cisco IOS software requirements for the GRP, see the “Cisco IOS Software Requirements”
section on page 3.
Backplane connector
SLOT-0
GIGABIT ROUTE PROCESSOR
SLOT
-1
COLL
LINK
TX
RX
RJ-45
MII
RESET
AUX
EJECT
H10547
Bank 2
DRAM DIMMs
Bank 1
PCMCIA slots
slot 0: bottom
slot 1: top
Console port
Ethernet
interface
(RJ-45 or MII)
Alphanumeric
LED displays
Auxiliary port
Flash
SIMM
U17
U42
U39

6
Memory Components
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Product Overview
Memory Components
Figure 2 shows the locations of the various types of memory used on the GRP. GRP memory component
types are presented in the following sections:
•DRAM
•SRAM
•NVRAM
•Flash Memory
Their functions are presented in Table 1.
DRAM
DRAM stores routing tables, protocols, and network accounting applications, and runs the Cisco IOS
software. The standard (default) GRP configuration is 128 MB of extended data output (EDO) DRAM,
with up to 512 MB available through DIMM upgrades.
Note GRP route memory configurations of 512 MB are only compatible with Product Number GRP-B=.
In addition, Cisco IOS Release 12.0(19)S or 12.0(19)ST or later and ROMMON Release 11.2 (181)
or later are also required.
Table 1 GRP Memory Components
Type Size Quantity Description Location
DRAM 641to 512 MB2
1. 64 MB of DRAM serves as a replacement for any DRAM DIMM slot on a minimum configuration of 128 MB (both slots populated) for the GRP.
2. GRP route memory configurations of 512 MB are only compatible with Product Number GRP-B=. Cisco IOS Release 12.0(19)S or 12.0(19)ST or later
and ROMMON Release 11.2 (181) or later are also required.
1 or 2 64-, 128-, or 256-MB DIMMs (based on the required DRAM
configuration) for main Cisco IOS software functions (default
configuration is 128 MB3)
3. Default DRAM configuration is 128 MB. Bank 1 (U39) must be populated first. You can use one or both banks to configure DRAM up to 512 MB.
U39 (bank 1)
U42 (bank 2)
SRAM4
4. SRAM is not user configurable or field upgradeable.
512 KB (fixed) — SRAM for secondary CPU cache memory functions —
NVRAM5
5. NVRAM is not user configurable or field upgradeable.
512 KB (fixed) 1 NVRAM for system configuration files —
Flash memory 8 MB SIMM6
6. SIMM socket is wired for Cisco’s own design and does not accept industry-standard 80-pin Flash SIMMs.
1 Contains Cisco IOS software images, system configuration
files, and other user-defined files on the GRP
U17
— Flash memory7
7. Cisco IOS Release 12.0(17)S or 12.0(17)ST or later is required, along with the corresponding boot images, for the GRP to function with a Flash disk.
1 to 2 Contains Cisco IOS software images, system configuration
files, and other user-defined files on up to two Flash memory
cards or Flash disks8
8. Linear Flash memory cards and ATA Flash disks can be used in either (or both) Flash card slot(s).
Flash disk
slot 0 and
slot 1
Flash boot
ROM
512 KB 1 Flash EPROM for the ROM monitor program boot image —

7
Memory Components
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Product Overview
Caution To prevent memory problems, DRAM DIMMs must be +3.3VDC, 60-nanosecond (ns) EDO devices.
Do not attempt to install other devices in the DIMM sockets. Cisco recommends that you use
Cisco-approved memory options. (See Table 14 on page 49.)
The following DRAM upgrade kits for the GRP and line cards are listed by product number:
•64-MB DRAM upgrade kit (one 64-MB DIMM)—MEM-GRP/LC-64=
•128-MB DRAM upgrade kit (one 128-MB DIMM)—MEM-GRP/LC-128=
•256-MB DRAM upgrade kit (two 128-MB DIMMs)—MEM-GRP/LC-256=
The following DRAM upgrade kits for Product Number GRP-B= are available (listed by product
number):
•256-MB DRAM upgrade kit (one 256-MB DIMM)—MEM-GRP-256=
•512-MB DRAM upgrade kit (two 256-MB DIMMs)—MEM-GRP-512-UPG=
These kits are available only for Product Number GRP-B=. They are not compatible with any other
Cisco product. See Table 14 for all requirements related to the 512-MB memory upgrade.
Note MEM-GRP/LC-64= can be used to replace bank 1 or bank 2 in the 128-MB default configuration on
the GRP line card. Cisco does not recommend using a 64-MB configuration on this card.
SRAM
SRAM provides secondary CPU cache memory. The standard GRP configuration is 512 KB. Its principal
function is to act as a staging area for routing table updates information to and from the line cards.
SRAM is not user configurable or field upgradeable.
NVRAM
System configuration files, software configuration register settings, and environmental monitoring logs
are contained in the 512-KB NVRAM, which is backed up with built-in lithium batteries that retain the
contents for a minimum of 5 years. NVRAM is not user configurable or field-upgradeable.
Flash Memory
Both the onboard and Flash card-based Flash memory allow you to remotely load and store multiple
Cisco IOS software and microcode images. You can download a new image over the network or from a
local server and then add the new image to Flash memory or replace the existing files. You can then boot
the routers either manually or automatically from any of the stored images.
Flash memory also functions as a Trivial File Transfer Protocol (TFTP) server to allow other servers to
boot remotely from stored images or to copy them into their own Flash memory. The onboard Flash
memory (called bootflash) contains the Cisco IOS software boot image, and the Flash memory card or
Flash disk contains the Cisco IOS software image.

8
System Status LEDs
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Product Overview
System Status LEDs
The two types of system status LEDs used on the GRP.
•Status LEDs
•Display LEDs
Status LEDs
The GRP has the following eight status LEDs:
•2 PCMCIA activity LEDs (one LED per PCMCIA slot)—Each LED goes on when its PCMCIA slot
is accessed. The LEDs receive power from the switched slot voltage.
•4 RJ-45 Ethernet port LEDs—These LEDs are used in conjunction with the RJ-45 Ethernet
connector. When the MII Ethernet port is in use, the LEDs are disabled. The LEDs indicate link
activity (LINK), collision detection (COLL), data transmission (TX), and data reception (RX).
•2 RJ-45 or MII Ethernet port selection LEDs—These two LEDs, when on, identify which of the two
Ethernet connections you selected. When the RJ-45 port is selected, its LED is on, and the MII LED
is off. When the MII port is selected, its LED is on, and the RJ-45 LED is off.
Display LEDs
The alphanumeric display LEDs are organized as two rows of four characters each. The display content
is controlled by the MBus software of the GRP. Both rows of the display are powered by the MBus
module.
These alphanumeric display LEDs provide system status messages that are displayed during the boot
process and after the boot process is completed.
During the boot process, the display LEDs are controlled directly by the MBus. After the boot process,
they are controlled by the Cisco IOS software (via the MBus), and display messages designated by the
Cisco IOS software.
The LED displays indicate the following:
•Status of the GRP
•System error messages
•User-defined status/error messages
Soft Reset Switch
A soft reset switch provides a reset to the R5000 software on the GRP. You access the soft reset switch
through a small opening in the GRP faceplate. To depress the switch, insert a pape rclip or a similar
object into the opening.
Caution To prevent system problems or loss of data, use the soft reset switch only on the advice of Cisco
service personnel.

9
Flash Card Slots
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Product Overview
Flash Card Slots
The GRP includes two Flash card slots. Either slot can support an ATA Flash disk or a linear Flash
memory card.
Note The GRP only supports +5VDC Flash card devices. It does not support +3.3VDC Flash card devices.
All combinations of different Flash card devices are supported by the GRP. You can use ATA Flash disks,
linear Flash memory cards, or a combination of the two. Each slot has an ejector button for ejecting a
card from the slot.
Note Linear Flash memory cards may not have the capacity to meet the requirements of your
configuration. However, they can be used for emergency file recovery applications.
Asynchronous Serial Ports
Two asynchronous serial ports on the GRP, the console and auxiliary ports, allow you to connect external
serial devices to monitor and manage the system. The console port is an Electronic Industries
Association/Telecommunications Industry Association (EIA/TIA)-232 receptacle (female) that provides
a data circuit-terminating equipment (DCE) interface for connecting a console terminal.
Note EIA/TIA-232 was formerly RS-232.
The auxiliary port is an EIA/TIA-232 plug (male) that provides a data terminal equipment (DTE)
interface; the auxiliary port supports flow control and is often used to connect a modem, a channel
service unit (CSU), or other optional equipment for Telnet management.
Ethernet Port
The GRP has one Ethernet port available, using one of the following connection types:
•RJ-45 receptacle—8-pin RJ-45 receptacle for either IEEE 802.3 10BASE-T (10 Mbps) or
IEEE 802.3u 100BASE-TX (100 Mbps) connections.
•MII receptacle—40-pin media independent interface (MII) receptacle that provides additional
flexibility in Ethernet connections. The pinout of this standard 40-pin receptacle is defined by the
IEEE 802.3u standard.
Note The RJ-45 and MII receptacles on the GRP represent two physical connection options for one
Ethernet interface; therefore, you can use either the RJ-45 connection or the MII connection, but not
both simultaneously.
The transmission speed of the Ethernet port is auto-sensing and is determined by the network to
which the Ethernet interface is connected; it is not user configurable. At the auto-sensed data
transmission rate of 100 Mbps, the Ethernet port provides maximum usable bandwidth that is less
than 100 Mbps; a maximum usable bandwidth of approximately 20 Mbps can be expected if you use
either the MII or RJ-45 connection.

10
Preparing for Installation
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Preparing for Installation
Preparing for Installation
Installation preparation is presented in the following sections:
•Safety Guidelines
•Translated Safety Warnings and Agency Approvals
•Electromagnetic Compatibility Regulatory Statements
•Preventing Electrostatic Discharge
•Working with Electrical Equipment
•Required Tools and Parts
Safety Guidelines
Before you perform any procedure in this publication, review the safety guidelines in this section to
avoid injuring yourself or damaging the equipment.
The following guidelines are for your safety and to protect the equipment. The guidelines do not include
all hazards. Be alert.
Note Review the safety warnings listed in the Regulatory Compliance and Safety Information for
Cisco 12000 Series Internet Routers publication (Document Number 78-4347-xx) for your router
before installing, configuring, or maintaining the GRP.
•Keep the work area clear and dust free during and after installation. Do not allow dirt or debris to
enter into any components.
•Do not wear loose clothing, jewelry, or other items that could get caught in the router while working
with the GRP.
•The GRP operates safely when it is used in accordance with its specifications and product usage
instructions.
•Review all safety and ESD-prevention guidelines to help you to avoid injury or damage to the
equipment.
•Ensure that your equipment configuration meets the minimum requirements for the upgrade or
replacement you will perform and that you have all the parts and tools you need.
•If you plan to replace a GRP, back up your current configuration file to a remote server or to Flash
memory before you remove the GRP. This prevents you from having to reenter all your current
configuration information manually. To back up the file, copy your configuration file to a Flash disk
or access a remote server.
Translated Safety Warnings and Agency Approvals
The complete list of safety warnings and agency approvals for the PRP is available in the Regulatory
Compliance and Safety Information for Cisco 12000 Series Internet Routers publication (Document
Number 78-4347-xx).