Cisco Systems 815 manual Ethernet Network Cabling Guidelines, 10BASE-T 100BASE-TX

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Appendix B Cabling Specifications

Ethernet Network Cabling Guidelines

Table B-1	Ethernet Cable Pinouts

RJ-45			RJ-45
Pin1	Signal	Direction	Pin
1	TX+	—>	1

2	TX–	—>	2

3	RX+	<—	3

6	RX–	<—	6

1. Pins 4, 5, 7, and 8 are not used for signaling.

Ethernet Network Cabling Guidelines

Table B-2describes some guidelines for creating Ethernet networks. Figures might vary, depending on the manufacturer of the network equipment.

Table B-2	Ethernet Cabling Guidelines

Specification		10BASE-T	100BASE-TX

Maximum segment		100 meters	100 meters
length

Maximum number of		5	•	With Class I
segments per network				repeaters: 1
			•	With Class II
				repeaters: 2

Maximum hop count1		4	•	With Class I
				repeaters: none
			•	With Class II
				repeaters: 1

Maximum number of		1024	1024
nodes per segment

Cable type required		UTP Category 3, 4, or 5	UTP Category 5 or STP

1. Hop count = Routing metric used to measure the distance between a source and a destination.

	Cisco 815 Integrated Services Router Hardware Installation Guide
B-2	OL-9558-01

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Contents Corporate Headquarters Page Cisco Systems, Inc. All rights reserved Page N T E N T S Installation Installing and Removing a Dimm C-4 ViiViii Audience and Scope OrganizationRelated Documentation Conventions Xii Xiii Xiv Page Xvi Xvii Commands XviiiCisco.com AccessibilityObtaining Documentation XixProduct Documentation DVD Ordering Documentation Documentation Store in the Cisco Marketplace at this URLDocumentation Feedback Cisco Product Security OverviewXxi Reporting Security Problems in Cisco Products XxiiObtaining Technical Assistance Cisco Technical Support & Documentation WebsiteXxiii Submitting a Service Request Definitions of Service Request SeverityXxiv Obtaining Additional Publications and Information XxvXxvi Key Features OverviewFeature Description Product Serial Number Location CiscoBack Panel Ports and LEDs Back Panel Ports and LEDsLabel/Color Description Front Panel LEDs WIC0 OKLED Label Color Description Router Memory Types of MemoryAmounts of Memory 815# show versionItems Included with the Cisco 815 Integrated Services Router Unpacking the RouterInstallation Before Installing the RouterConnecting the Router to Your Local Network Installation Connecting the Router to Your Local Network Connecting the Router to the Local Network Connecting Power to the Router Connecting the Power SupplyVerifying Your Installation Optional Installation Procedures Connecting a PCConnecting the Console Cable to the Router Connecting a Modem AUX port RJ-45 DB-9-to-DB-25 adapter Console cable ModemStacking the Router Assembling Stacking Clip and Fastener Stacking the Router Back View Unstacking the Router Unstacking the RouterOL-9558-01 Troubleshooting Contacting Your Cisco ResellerRecovering a Lost Password Determining the Configuration Register ValueConfiguration register is 0x2102 815# Resetting the Router Press Return. The following prompt appearsPrompt changes to the privileged Exec prompt Resetting the Password Resetting the Configuration Register ValueProblem Solving OK LED DiagnosticsTroubleshooting WICs and Cables Number of Blinks MeaningExample WIC-4ESW Troubleshooting the Power System Symptom Possible Causes Technical Specifications Operating Specifications Cabling Specifications Ethernet CablesEthernet Network Cabling Guidelines 10BASE-T 100BASE-TXSignal RJ-45 Pin DB-9 Pin DB-25 Pin Console Cable and AdapterOL-9558-01 Safety Warnings Opening the Chassis Figure C-1 Removing the Chassis Screws Installing and Removing a Dimm Locating ModulesRemoving a Dimm Release the latches Remove the DimmInstalling a Dimm Insert the Dimm Latches rotate to closed positionInstalling a VPN Module Screw StandoffFigure C-7 VPN Module Location Figure C-9 Retention Clip Location Figure C-10 Aligning the Retention Clip Center Post Figure C-11 Attaching the Retention Clip to the Motherboard Figure C-12 Securing the Standoff to the Router Motherboard Closing the Chassis Figure C-13 Attaching the Router Cover NumericsC IN-1ETH COL LED IN-2Dimm C-4 IN-3IN-4