Network Processing Engine and Network Services Engine Installation and Configuration
NPE-100, NPE-150, and NPE-200 Overview
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NPE-100, NPE-150, and NPE-200 Overview

Table Of Contents

NPE-100, NPE-150, and NPE-200 Overview

Supported Platforms

Software Requirements

NPE-100, NPE-150, and NPE-200 Description and Overview

Components

System Management Functions

Terms and Acronyms

NPE-100, NPE-150, and NPE-200 Memory Information

NPE-100 Memory Information

NPE-150 Memory Information

NPE-200 Memory Information


NPE-100, NPE-150, and NPE-200 Overview


This chapter describes the network processing engine (NPE) models NPE-100, NPE-150, and NPE-200 and contains the following sections:

Supported Platforms

Software Requirements

NPE-100, NPE-150, and NPE-200 Description and Overview

NPE-100, NPE-150, and NPE-200 Memory Information

Supported Platforms

The following NPEs support the Cisco 7200 series routers and Cisco 7200 VXR routers:

NPE-100

NPE-150

NPE-200

The following NPEs support the Cisco uBR7246 and Cisco uBR7223 universal broadband routers:

NPE-150

NPE-200

The NPE-200 supports the Cisco 7206 as a router shelf in a Cisco AS5800 Universal Access Server.

Software Requirements

For minimum software release information, see the "Software Requirements" section on page 8-4.

NPE-100, NPE-150, and NPE-200 Description and Overview

This section contains information about the network processing engine components and the system management functions.

The network processing engine maintains and executes the system management functions for the Cisco 7200 series routers.

The network processing engine maintains and executes the system management functions for the Cisco uBR7200 series routers.

The NPE also shares the system memory and environmental monitoring functions with the I/O controller.

Components

Figure 1-1 NPE-100

1

System controller

6

Midplane connectors

2

R4700 microprocessor

7

Temperature sensor

3

Captive installation screw

8

DRAM SIMMs

4

Handle

9

Bank 1

5

Temperature sensor

10

Bank 0


Figure 1-2 NPE-150

1

System controller

7

Midplane connectors

2

R4700 microprocessor

8

Temperature sensor

3

1-MB SRAM (U700 through U703 and
U800 through U803)

9

DRAM SIMMs

4

Captive installation screw

10

Bank 1

5

Handle

11

Bank 0

6

Temperature sensor

   

Figure 1-3 NPE-200

1

System controller

7

Midplane connectors

2

R5000 microprocessor

8

Temperature sensor

3

4-MB SRAM (U6, U10, U13, U14, U28, U29, U38, and U39)

9

Boot ROM U92

4

Captive installation screw

10

DRAM SIMMs

5

Handle

11

Bank 1

6

Temperature sensor

12

Bank 0


The NPE-100, NPE-150, and NPE-200 consist of the following components:

Reduced instruction set computing (RISC) microprocessor

The NPE-100 and NPE-150 have an R4700 microprocessor that operates at an internal clock speed of 150 MHz.

The NPE-200 has an R5000 microprocessor that operates at an internal clock speed of 200 MHz.

System controller

The system controller provides hardware logic to interconnect the processor, DRAM, and the PCI-based system backplane bus. The NPE-150 and NPE-200 have a system controller that uses direct memory access (DMA) to transfer data between DRAM and packet SRAM on the network processing engine.

Upgradable memory modules

The NPE-100, NPE-150, and NPE-200 use DRAM for storing routing tables, network accounting applications, packets of information in preparation for process switching, and packet buffering for SRAM overflow (except in the NPE-100, which contains no packet SRAM). The standard configuration is 32 MB, with up to 128 MB available through single in-line memory module (SIMM) upgrades.

Packet SRAM for storing data packets

The NPE-100 does not have packet SRAM.

The NPE-150 has 1 MB of SRAM.

The NPE-200 has 4 MB of SRAM.

Cache memory

The NPE-100, NPE-150, and NPE-200 have unified cache SRAM that functions as the secondary cache for the microprocessor. (The primary cache is within the microprocessor.)

Two environmental sensors for monitoring the cooling air as it leaves the chassis

Boot ROM for storing sufficient code for booting the Cisco IOS software on the NPE-200


Note The NPE-100 and NPE-150 use the boot ROM on the I/O controller.


System Management Functions

The network processing engines perform the following system management functions:

Sending and receiving routing protocol updates

Managing tables, caches, and buffers

Monitoring interface and environmental status

Providing Simple Network Management Protocol (SNMP) management through the console and Telnet interface

Accounting for and switching of data traffic

Booting and reloading images

Managing port adapters (including recognition and initialization during online insertion and removal)

Terms and Acronyms

Cache—Memory with fast access and small capacity used to temporarily store recently accessed data; found either incorporated into the processor or near it.

DIMM—dual in-line memory module

DRAM—dynamic random-access memory

Instruction and data cache—Instructions to the processor, and data on which the instructions work.

Integrated cache—Cache that is built into the processor; sometimes referred to as internal cache. Cache memory physically located outside the processor is not integrated, and is sometimes referred to as external cache.

OTP—one time programmable

Primary, secondary, tertiary cache—Hierarchical cache memory storage based on the proximity of the cache to the core of the processor. Primary cache is closest to the processor core and has the fastest access. Secondary cache has slower access than primary cache, but faster access than tertiary cache.

RAM—random-access memory

RISC—reduced instruction set computing

ROM—read-only memory

SIMM—single in-line memory module

SDRAM—synchronous dynamic random-access memory

SDRAM-fixed—SDRAM of a fixed size or quantity; can be replaced, but not upgraded

SODIMM—small outline dual in-line memory module

SRAM—static random-access memory

Unified cache—Instruction cache and data cache are combined. For example, a processor may have primary cache with separate instruction and data cache memory, but unified secondary cache.

NPE-100, NPE-150, and NPE-200 Memory Information

To determine the memory configuration of your NPE, use the show version command.

The following example shows an NPE-150 installed in a Cisco 7206 router:

router(boot)# show version
Cisco Internetwork Operating System Software 
IOS (tm) 7200 Software (C7200-J-M), Released Version 11.1(17)CA
Copyright (c) 1986-1999 by cisco Systems, Inc.
Compiled Sun 21-Apr-96 04:10
Image text-base:0x60010890, data-base:0x605F0000

  (display text omitted)

cisco 7206 (NPE150) processor with 12288K/4096K bytes of memory.
R4700 processor, Implementation 33, Rev 1.0, (Level 2 Cache) 
Last reset from power-on 
 
  (display text omitted)

Use the following sections for information about memory specifications and configurations for the NPE-100, NPE-150, and NPE-200.


Note To prevent DRAM errors in the NPE-100, NPE-150, or NPE-200, and to ensure that your system initializes correctly at startup, DRAM bank 0 (socket U18 and U25, or U11 and U25) must contain no fewer than two SIMMs of the same type. You may also install two SIMMs of the same type in bank 1 (socket U4 and U12, or U42 and U52); however, bank 0 must always contain the two largest SIMMs.


NPE-100 Memory Information

Table 1-1 provides information about memory specifications. Table 1-2 provides memory configurations for the NPE-100.

Table 1-1 NPE-100 Memory Specifications

Memory Type
Size
Quantity
Description
Component Location on the NPE-100 Baord

DRAM

32 to 128 MB

2 to 4

16- or 32-MB SIMMs (based on maximum DRAM required)

Bank 0: U18 and U25 Bank 1: U4 and U12

Primary cache

R4700 processor, internal cache

U201

Secondary cache

512 KB

4

R4700 processor, unified, external cache

U2, U10, U14, and U26


Table 1-2 NPE-100 DRAM SIMM Configurations—Configurable Memory Only

Total DRAM 1
Bank 0
Quantity - Bank 0
Bank 1
Quantity - Bank 1
Product Number

32 MB

U18 and U25

2 16-MB SIMMs2

U4 and U12

MEM-NPE-32MB2

64 MB

U18 and U25

2 32-MB SIMMs

U4 and U12

MEM-NPE-64MB2

128 MB

U18 and U25

2 32-MB SIMMs

U4 and U12

2 32-MB SIMMs

MEM-NPE-128MB2

1 Refer to the Cisco AS5800 Universal Access Server documentation listed in the "Related Documentation" section on page iii for Cisco AS5800 Universal Access Server DRAM options.

2 These products are also available as DRAM upgrades. For example, to upgrade a network processing engine from 32 MB to 64 MB of DRAM, order Product Number MEM-NPE-64MB=.


NPE-150 Memory Information

Table 1-3 provides information about memory specifications. Table 1-4 provides memory configurations for the NPE-150.

Table 1-3 NPE-150 Memory Specifications

Memory Type
Size
Quantity
Description
Component Location on the NPE-150 Board

DRAM

32 to 128 MB

2 to 4

16- or 32-MB SIMMs (based on maximum DRAM required)

Bank 0: U18 and U2
Bank 1: U4 and U12

SRAM

1 MB

8

8 chips, each being 128K x 9 bits wide

U700 through U703
U800 through U803

Primary cache

R4700 processor, internal cache

U201

Secondary cache

512 MB

4

R4700 processor, unified, external cache

U2, U10, U14, and U26


Table 1-4 NPE-150 DRAM SIMM Configurations—Configurable Memory Only

Total DRAM 1
Bank 0
Quantity - Bank 0
Bank 1
Quantity - Bank 1
Product Number

32 MB

U18 and U25

2 16-MB SIMMs

U4 and U12

MEM-NPE-32 MB2

64 MB

U18 and U25

2 32-MB SIMMs

U4 and U12

MEM-NPE-64MB2

128 MB

U18 and U25

2 32-MB SIMMs

U4 and U12

2 32-MB SIMMs

MEM-NPE-128MB2

1 Refer to the Cisco AS5800 Universal Access Server documentation listed in the "Related Documentation" section on page iii for Cisco AS5800 Universal Access Server DRAM options.

2 These products are also available as DRAM upgrades. For example, to upgrade a network processing engine from 32 MB to 64 MB of DRAM, order Product Number MEM-NPE-64MB=.


NPE-200 Memory Information

Table 1-5 provides information about memory specifications. Table 1-6 provides memory configurations for the NPE-200.

Table 1-5 NPE-200 Memory Specifications

Memory Type
Size
Quantity
Description
Component Location on the NPE-200 Board

DRAM

32 to 128 MB

2 to 4

16- or 32-MB SIMMs (based on maximum DRAM required)

Bank 0: U11 and U25
Bank 1: U42 and U52

SRAM

4 MB

8

8 chips, each being 512K x 8 bits wide

U6, U10, U13, U14, U28, U29, U38, and U39

Boot ROM

256 KB

1

EPROM for the ROM monitor programs

U92

Primary cache

R5000 processor, internal cache

U44

Secondary cache

512 KB

4

R5000 processor, unified, external cache

U16, U9, U109, and U107


Table 1-6 NPE-200 DRAM SIMM Configurations—Configurable Memory Only

Total DRAM 1
Bank 0
Quantity - Bank 0
Bank 1
Quantity - Bank 1
Product Number

32 MB

U11 and U25

2 16-MB SIMMs

U42 and U52

MEM-NPE-32MB2

64 MB

U11 and U25

2 32-MB SIMMs

U42 and U52

MEM-NPE-64MB2

128 MB

U11 and U25

2 32-MB SIMMs

U42 and U52

2 32-MB SIMMs

MEM-NPE-128MB2

1 Refer to the Cisco AS5800 Universal Access Server documentation listed in the "Related Documentation" section on page iii for Cisco AS5800 Universal Access Server DRAM options.

2 These products are also available as DRAM upgrades. For example, to upgrade a network processing engine from 32 MB to 64 MB of DRAM, order Product Number MEM-NPE-64MB=.