3Com RMON-EMP-3 installation and operation guide RS-232 Crossover Cable for a PC or Terminal

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RS-232 Crossover Cable for a PC or Terminal

This section describes pinouts for an RS-232 crossover cable when you connect a PC or terminal to the RMON MultiProbe Module. The RMON MultiProbe Module end of the cable is a 25-pin female connector.

Figure A-1 represents the minimum pinouts required for a crossover cable

Figure A-1. RS-232 Crossover Cable for a Terminal With a 25-Pin Connector

A - 6 Ethernet RMON MultiProbe Module Installation and Operation Guide

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Contents Page VDE Class B Compliance Restricted Rights Page Contents Configuring the Module Troubleshooting Page Figures Page Tables Page How to Use This Guide AudienceStructure of This Guide Document Conventions Convention Indicates ExampleUsr/snm/agents Related Documents 3Com Documents Reference Documents Introduction Rmon Overview Rmon ArchitectureRmon Probe Ethernet Rmon Groups Rmon ClientPage Rmon MultiProbe Module Overview Rmon MultiProbe Module Features Other benefits of the Rmon MultiProbe Module include Theory of Operation Sample Application Rmon Sample ApplicationPage Installing the Module Precautionary Procedures Quick Installation Quick Installation StepsStep Procedure Chapter/Section Unpacking Procedures Installing the Rmon MultiProbe Module Rmon MultiProbe Module ONline System Concentrator Connecting a Terminal Initializing the Rmon MultiProbe Module Main Configuration Menu Monitoring the Front Panel Rmon MultiProbe Module Front Panel LEDs and Reset Button Module LED Interpretations LED Name Color State IndicatesModule LED Interpretations Page Configuring the Module Configuration Menu Overview Configuration Menu Flow Chart Configuration Menu Flow Chart Modifying Configuration Menu Values Using the Main Configuration Menu Main Configuration Menu Main Configuration Menu Description Option ResultUsing the Download Menu Download MenuDownload Menu Description Using the Modify/View Configuration Values Menu Modify/View Configuration Values MenuModify/View Configuration Values Menu Description Using the Modify/View Serial Configuration Values Menu Modify/View Serial Configuration Values Menu Modify/View Serial Configuration Values Menu Description Display the modem init string and enables you Command Result Modem Init Strings and Hangup StringsModem Init Strings and Hangup Strings Waits for the reply string that follows which is Modem Response Strings Connect Response String ExampleResponse code Bps rate Using the Modify/View Network Settings Menu No Carrier /BUSY/NO DIALTONE/NO ANSWER/ERRORModify/View Network Settings Menu Modify/View Network Settings Menu Description Using the Modify/View Network Interface Settings Menus Modify/View Network Interface 1 Settings Menu Modify/View Network Interface Settings Menu Description Configuring the Module and Interfaces Assigning the Interface IP Address and Subnet MaskConfiguring the Module 3 Assigning the Module Default Gateway Using Bootp to Configure the Module and Interfaces Bootp DescriptionBootp Configuration Process Bootp Requirements Using BootpSample BOOTPtab file Configuring the Module 3 Assigning Interfaces to Networks Using the DIP Switch to Assign Networks DIP Switch LocationNetwork Selection DIP Switch Settings Switch Network Selection SettingUsing Management Commands to Assign Interfaces to Networks Management Command Examples SET Port 7.1 Network ETHERNET1Showing Module and Interface Configurations Show Module CommandSaving Network Assignments Show Port Command Backplane Re-initializing the Rmon MultiProbe Module Warm-Starting the Rmon MultiProbe Module Information Preserved Information LostCold-Starting the Rmon MultiProbe Module Information Preserved Information Lost Page Troubleshooting Troubleshooting Startup Problems Diagnostic Tests and Interface Status LEDsDiagnostic Interface Troubleshooting Malfunctions Troubleshooting MalfunctionsSymptom Possible Cause Corrective Action Troubleshooting Malfunctions Troubleshooting Malfunctions If the LEDs Nvram Troubleshooting Network Connectivity Problems Technical Assistance Page Specifications Electrical Specifications Environmental SpecificationsMechanical Specifications General SpecificationsConnectors and Cables Interface ConfigurationRS-232 25-Pin Port Connector Pinouts PinRS-232 Crossover Cable for a PC or Terminal Modem Cable Pinouts Sample Out-of-Band ConnectionsPage Using the Rmon MultiProbe Module Slip Address RS-232 Straight-Through Cable Table A-2. RS-232 Straight-Through Cable PinoutsModem MultiProbe Module RS-232 Null-Modem Cable Figure A-3. RS-232 Straight-Through Cable PinoutsMemory Configuration Allocation Table A-3. Maximum Number of Entries for Ethernet TablesEthernet Table Maximum Number of Entries Technical Support On-line Technical SupportSupport from Your Network Supplier Email Technical SupportWorld Wide Web Site Support from 3Com Accessing the 3Com MIB Returning Products for Repair3Com Technical Publications Page Index LEDs, 2-11 monitoring, 2-10 reset button ONcore Distributed Management Module Pinouts, A-5 speed, 3-15 Serial Port Mode VDE compliance Warm start Configuration information