Cisco Systems 1760 Router Memory

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Cisco 1760 Modular Access Router Hardware Installation Guide

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Chapter1 Cisco 1760 Router Overview

Router Memory

Router Memory

This section describes the types of memory stored in the router and tells how to

find out how much of each type the router has.

For instructions on how to upgrade memory in the router, See AppendixC,

“Installing and Upgrading Memory and Packet Voice Data Modules,” in this

guide.

Types of Memory

The router has the following types of memory:

•Dynamic RAM (DRAM)—This is the main storage memory for the router.

DRAM is also called working storage and contains the dynamic configuration

information. The router stores a working copy of CiscoIOS software,

dynamic configuration information, and routing table information in DRAM.

•Nonvolatile RAM (NVRAM)—This type of memory contains the startup

configuration.

SLOT 3 OK Green On when a VIC is correctly inserted in the card slot.

0 Green VIC-2E&M Blinks when data is being sent to or received from

port 0 in slot 3.

VIC-2FXO

VIC-2FXS

VIC-2BRI-NT/TE

VIC-2DID

1 Green VIC-2E&M Blinks when data is being sent to or received from

port 1 in slot 3.

VIC-2FXO

VIC-2FXS

VIC-2BRI-NT/TE

VIC-2DID

Table1-5 WIC/VIC LEDs (continued)

LED Color Cards Supported LED Meaning

Contents

Main Page Page Page CONTENTS Page Page Page Preface Audience and Scope Organization Related Documentation Conventions Notes, Cautions, and Warnings xiv Warning Definition xv xvi xvii xviii xix Page Page Commands Obtaining Documentation Cisco.com Documentation DVD Ordering Documentation Documentation Feedback Cisco Product Security Overview Reporting Security Problems in Cisco Products Obtaining Technical Assistance Cisco Technical Support Website Submitting a Service Request Definitions of Service Request Severity Obtaining Additional Publications and Information Page Page 1-1 Cisco 1760 Router Overview Key Features Ports and LEDs Router Memory Unpacking the Router Additional Required Equipment Figure 1-1 shows the Cisco1760 router. Figure1-1 Cisco1760 Router Key Features Ports and LEDs 1 2 3 16 15 13 9 814 12 11 7 6 10 4 5 Ports System LEDs Ethernet LEDs WIC/VIC LEDs Page Page Router Memory Types of Memory Amounts of Memory Unpacking the Router Additional Required Equipment Page Page Installation Before Installing the Router Mounting the Router in a Rack Attaching Brackets to the Router Mounting the Router in a Rack 2-4 Figure2-2 Attaching Brackets for 19- and 24-Inch Racks Phillips flat-head screws 19" Configuration Phillips truss-head screws Attaching Brackets to the Rack Attaching the Optional Cable Guide Cisco 1700 Series Connecting the Router to Your Local Network Connecting the Router to Your Local Network A straight-through, RJ-45-to-RJ-45 Ethernet cable A 10/100-Mbps Ethernet hub or switch Warning Caution Always connect the Ethernet cable to the yellow ports on the router. Do not Cisco 1700 Series 2-7 Connecting the Router to Your Local Network Step2 Connect the other end of the cable to a network port on the hub or switch. Follow these steps to connect the router to your local network: Step1 Connect one end of the cable to the yellow Ethernet port (labeled 10/100-Mbps Installing WICs and VICs Safety Information Page 1 2 Connecting Power to the Router Verifying the Installation Optional Installation Steps Connecting a PC Connecting a Modem 2-15 Optional Installation Steps Figure2-10 Connecting a Modem to the Router 1Aux port (RJ-45) 3DB-9-to-DB-25 adapter 2Modem 4Console cable Cisco 1700 Page Troubleshooting Contacting Your Cisco Reseller Recovering a Lost Password Determining the Configuration Register Value 3-3 Step4 At the user EXEC prompt (Router>), enter the show version command to Step5 Record the setting of the configuration register. It is usually 0x0. display the existing configuration register value (shown at the end of this example output): Resetting the Router Page Resetting the Password Resetting the Configuration Register Value Problem-Solving OK LED Diagnostics Troubleshooting WICs and VICs 3-9 3-10 Page Troubleshooting the Power System Troubleshooting ISDN Page Fan Behavior Page A Technical Specifications Page B Cabling Specifications Ethernet Cables Ethernet Network Cabling Guidelines Console Cable and Adapter VIC Cables and Pinouts Page Cables and Pinouts for 2-Port ISDN BRI Card Page C Installing and Upgrading Memory and Packet Voice Data Modules Safety Information C-2 Opening the Chassis AppendixC Installing and Upgrading Memory and Packet Voice Data Modules Locating Modules C-4 Step4 Place the router bottom on an antistatic mat, and begin installing modules. VIC-only slots Locating Modules FigureC-3 Cisco 1760 MotherboardModule Locations Installing a DIMM DIMM slot SIMM slot VPN module Power supply PVDM slot 1 PVDM slot 0 Page Installing a SIMM Installing a PVDM Vi ew id f Page Page Closing the Chassis D Installing the Virtual Private Network Module Before You Begin VPN Module Parts D-2 Safety Warnings Preventing Electrostatic Discharge Damage Installing the VPN Module in a Cisco 1760 Router Opening the Cisco 1760 Chassis D-5 Chassis screw Pull the top cover off in this direction. Installing the VPN Module D-7 Step2 Locate the VPN module socket, and insert the VPN module, as shown in Figure D-4. FigureD-4 VPN Module Location Standoffs Page Closing the Cisco 1760 Chassis Page E Installing the Echo Canceler Expansion Modules on Cisco Interface Cards Multiflex Trunk Interface Cards Echo Echo Canceler Expansion Modules Installing and Configuring the Echo Canceler Expansion Modules Page INDEX A B C D E F I L M N O P R S T U V W