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Cisco WS-C1912-A Hardware Installation Guide - Page 25

Memory, External Modules In chassis slots, Internal Modules, Series

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Chapter 1 Overview of the Router Hardware Features Table 1-2 Summary of Cisco 1940 Series Removable and Interchangeable Modules External Modules (In chassis slots) CompactFlash 1 Enhanced High-Speed WAN Interface Cards (EHWICs)2 Internal Modules Internal Service Module (ISM)3 2 2 1 1. Only Advanced Capability CompactFlash (CF) purchased from Cisco operate in Cisco 1900 series ISRs. Legacy CF will not operate in these routers. When legacy CF is inserted, the following error message appears: WARNING: Unsupported compact flash detected. Use of this card during normal operation can impact and severely degrade performance of the system. Please use supported compact flash cards only. 2. HWICs, WICs, and VWICs (data only) are supported. 3. Non wireless models only. Memory Cisco 1900 series routers contain the following types of memory: • DRAM-Stores the running configuration and routing tables and is used for packet buffering by the network interfaces. Cisco IOS software executes from DRAM memory. • Boot/NVRAM-Internal flash memory. Stores the bootstrap program (ROM monitor), the configuration register, and the startup configuration. • Flash memory-External flash memory (1940 series only). Stores the operating system software image. Table 1-3 summarizes the memory options for Cisco 1900 series routers. The default memory numbers for RAM represent the minimum usable memory. You can install additional RAM in multiples of the default amount, up to the maximum amount on the Cisco 1940 series ISRs. The Cisco 1905 and Cisco 1921 have factory installed, fixed memory modules and no expansion slots. Table 1-3 Router Memory Specifications DRAM 1940 Series 1905 1921 DRAM Type-Unregistered DIMM (UDIMM) DIMM sizes-512 MB, 1 GB, 2 GB DIMM expansion slots-1 Default onboard memory-512 MB non ECC Maximum memory-2.5 GB Type-DDR2 Type-DDR2 DIMM expansion slots-0 DIMM expansion slots-0 Default onboard memory-2561 MB non ECC Maximum memory-512 MB2 Default onboard memory-512 MB non ECC Maximum memory-512 MB Boot or NVRAM-Internal 16 MB Boot or NVRAM-Internal 16 MB flash memory. flash memory. Boot or NVRAM-Internal 16-MB flash memory. 1. 256 MB cannot support net boot or warm upgrade functions. Net boot and warm upgrade require 512 MB of memory. 2. 512 MB activation requires memory licensing feature. See the Cisco IOS Software Activation Configuration Guide for details. OL-19084-02 Cisco 1900 Series Hardware Installation 1-9

Section	Page
Cisco 1900 Series Integrated Services Router Hardware Installation	1
Contents	3
Preface	7
Objectives	7
Audience	7
Organization	8
Conventions	8
Related Documentation	15
Searching within Cisco Documents	16
Obtaining Documentation and Submitting a Service Request	16
Overview of the Router	17
Safety Warnings	17
Safety Warnings for Finland, Norway and Sweden	18
Chassis Views	18
Hardware Features	21
Product Serial Number Location	22
Cisco Product Identification Tool	23
Built-In Interfaces	23
Removable, Interchangeable, and Optional Modules	24
Memory	25
LED Indicators	26
Chassis Ventilation	28
Real-Time Clock	28
Chassis Security	28
Wireless LAN Connectivity	28
Baud Reset Button	29
Interface Numbering	29
Specifications	30
Regulatory Compliance	34
Preparing for Router Installation	35
Safety Recommendations	35
General Guidelines	35
Safety with Electricity	36
Preventing Electrostatic Discharge Damage	37
General Site Requirements	37
Power Supply Considerations	38
Site Environment	38
Site Configuration	38
Wireless LAN Considerations	39
Inspecting the Router	39
Installation Checklist	39
Site Log	40
Required Tools and Equipment for Installation and Maintenance	41
Cable Information and Specifications for Cisco 1900 Series Routers	43
Console and Auxiliary Port Considerations	43
About Console and Auxiliary Ports	43
Console Port Connections	43
EIA/TIA-232 Port	44
USB Serial Console	44
Auxiliary Port Connections	45
Preparing to Connect to a Network	45
Ethernet Connections	45
Serial Connections	45
About Serial Connections	46
Configuring Serial Connections	46
Serial DTE or DCE Devices	46
Signaling Standards Supported	46
Transmission Speeds and Distance Limitations	47
Asynchronous/Synchronous Serial Module Baud Rates	47
ISDN BRI Connections	48
CSU/DSU Connections	48
Installing and Connecting the Router	49
About Modules	49
Internal Modules	49
Plug-In Modules	50
Safety Warnings	50
Safety Warnings for Finland, Norway and Sweden	51
Setting Up the Chassis	51
Chassis Airflow Diagram	51
Setting the Chassis on a Desktop	52
Chassis Grounding	52
Wall-Mounting the Chassis	52
Rack-Mounting the Chassis	55
Attaching Rack-Mount Brackets to Cisco 1900 Series Routers	55
Installing the Chassis Ground Connection	57
Connecting WAN and LAN Cables	59
Safety Messages	59
Ports and Cabling	61
Connection Procedures and Precautions	62
Connecting to a Console Terminal or Modem	62
Connecting to the Console Port with Microsoft Windows	62
Connecting to the Console Port with Mac OS X	64
Connecting to the Console Port with Linux	64
Installing the Cisco Microsoft Windows USB Device Driver	65
Installing the Cisco Microsoft Windows XP USB Driver	65
Installing the Cisco Microsoft Windows 2000 USB Driver	65
Installing the Cisco Microsoft Windows Vista USB Driver	66
Uninstalling the Cisco USB Driver	66
Uninstalling the Cisco Microsoft Windows XP and 2000 USB Driver	66
Using the Add Remove Programs Utility	66
Using the Setup.exe Program	67
Uninstalling the Cisco Microsoft Windows Vista USB Driver	67
Connecting to the Auxiliary Port	68
Connecting Power	69
Connecting to AC Power	69
Connecting to DC Power	70
DC Wiring Requirements for Cisco 1900 Series Routers	70
Cisco 1900 Series Router Wiring Procedure for DC Input	71
Configuring the Router	75
Powering up the Router	75
Checklist Before Powering Up the Cisco Router	75
Powering Up the Cisco Router	76
Verifying the Front Panel LED Indications	77
Performing the Initial Configuration on the Router	77
Using the Cisco Setup Command Facility	77
Using Cisco Configuration Professional Express	80
Using the Cisco CLI-Manual Configuration	80
Initial CLI Configuration	81
Configuring the Router Hostname	82
Configuring the Enable and Enable Secret Passwords	83
Configuring the Console Idle Privileged EXEC Timeout	84
Configuring Gigabit Ethernet Interfaces	86
Specifying a Default Route or Gateway of Last Resort	88
Configuring IP Routing and IP Protocols	88
Gateway of Last Resort	89
Configuring Virtual Terminal Lines for Remote Console Access	91
Configuring the Auxiliary Line	92
Verifying Network Connectivity	93
Saving Your Router Configuration	95
Saving Backup Copies of Configuration and System Image	95
Verifying the Initial Configuration	97
Getting Software Licenses for the Router	99
Activating a New Software Package or Feature	99
RMA License Transfer	100

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1-9

Cisco 1900 Series Hardware Installation

OL-19084-02

Chapter 1

Overview of the Router

Hardware Features

Memory

Cisco 1900 series routers contain the following types of memory:

•

DRAM—Stores the running configuration and routing tables and is used for packet buffering by the

network interfaces. Cisco IOS software executes from DRAM memory.

•

Boot/NVRAM—Internal flash memory. Stores the bootstrap program (ROM monitor), the

configuration register, and the startup configuration.

•

Flash memory—External flash memory (1940 series only). Stores the operating system software

image.

Table 1-3

summarizes the memory options for Cisco 1900 series routers. The default memory numbers

for RAM represent the minimum usable memory. You can install additional RAM in multiples of the

default amount, up to the maximum amount on the Cisco 1940 series ISRs. The Cisco 1905 and Cisco

1921 have factory installed, fixed memory modules and no expansion slots.

Table 1-2

Summary of Cisco 1940 Series Removable and Interchangeable Modules

External Modules (In chassis slots)

Internal Modules

CompactFlash

Only Advanced Capability CompactFlash (CF) purchased from Cisco operate in Cisco 1900 series

ISRs. Legacy CF will not operate in these routers. When legacy CF is inserted, the following error

message appears:

WARNING: Unsupported compact flash detected. Use of this card during

normal operation can impact and severely degrade performance of the

system. Please use supported compact flash cards only.

Enhanced High-Speed WAN

Interface Cards (EHWICs)

HWICs, WICs, and VWICs (data only) are supported.

Internal Service Module (ISM)

Non wireless models only.

Table 1-3

Router Memory Specifications

DRAM

1940 Series

1905

1921

DRAM

Type—Unregistered DIMM

(UDIMM)

DIMM sizes—512 MB, 1 GB, 2

DIMM expansion slots—1

Default onboard memory—512

MB non ECC

Maximum memory—2.5 GB

Boot or NVRAM—Internal

16-MB flash memory.

Type—DDR2

DIMM expansion slots—0

Default onboard

memory—256

MB non ECC

Maximum memory—512 MB

Boot or NVRAM—Internal 16 MB

flash memory.

256 MB cannot support net boot or warm upgrade functions. Net boot and warm upgrade require 512 MB of memory.

512 MB activation requires memory licensing feature. See the

Cisco IOS Software Activation Configuration Guide

for details.