HP AdvanceStack Internet Router Or other DCE device, EIA/TIA-232 Speed and Distance Limitations

Page 21

Installing the HP AdvanceStack Internet Router

Preparing to Connect to a Network

Signaling Standards Supported

The synchronous serial port supports the following signaling standards: EIA/ TIA-232, EIA/TIA-449, V.35, X.21, and EIA-530. You can order a DB-60 shielded serial transition cable from HP that has the appropriate connector for the standard you specify. The router end of the shielded serial transition cable has

aDB-60 connector, which connects to the DB-60 port on the rear panel of the router. The other end of the serial transition cable is available with the connector appropriate for the standard you specify. The documentation for the device you want to connect should indicate the standard used for that device. The synchronous serial port can be configured as DTE or DCE (except EIA-530, which is DTE only), depending on the attached cable. To order a shielded serial transition cable, refer to the section “Ordering Information” in chapter 1 “HP AdvanceStack Internet Router Overview” and appendix A, “Cable Specifications”.

N O T E	All serial ports configured as DTE require external clocking from a CSU/DSU
	or other DCE device.
	Although attempting to manufacture your own serial cables is not recom-
	mended (because of the small size of the pins on the DB-60 serial connector),
	cable pinouts are provided in appendix A, “Cable Specifications”.

Distance Limitations

Serial signals can travel a limited distance at any given bit rate; generally, the slower the data rate, the greater the distance. All serial signals are subject to distance limits, beyond which a signal degrades significantly or is completely lost.

Table 2-3 lists the maximum speeds and distances for EIA/TIA-232 signals. This signalling standard supports unbalanced circuits at signal speeds up to 64 Kbps.

Table 2-3. EIA/TIA-232 Speed and Distance Limitations

Data Rate (Baud)	Distance (Feet)	Distance (Meters)
2400	200	60
4800	100	30
9600	50	15
19200	50	15
38400	50	15
64000	25	7.6

Installation

2-5

Image 21

Contents HP AdvanceStack Internet Router Page Support is as close As the World Wide Web Additional HP Support Services HP AdvanceStack Internet Router Installation GuidePublication Number Contents Verifying Network Connectivity Getting More Information Configuring the HP AdvanceStack Internet RouterCable Specifications Page HP AdvanceStack Internet Router Overview HP AdvanceStack Internet Router Overview Hardware FeaturesSoftware Features Compression Includes switchingCables and Adapters Ordering InformationCisco Systems Contact Information Documentation and SoftwareCisco Systems, Inc West Tasman Drive San Jose, CA Tel Nets FaxVerifying Included Parts InstallationInstalling the HP AdvanceStack Internet Router Modem for remote access optionalRequired Tools and Parts Preparing to Connect to a NetworkIsdn BRI Cable Specifications S/T Cable Specification High-Capacitance Cable Low-Capacitance CableIsdn Connections Synchronous Serial Connections Typical DTE and DCE DevicesDevice Type Gender Typical Devices Or other DCE device EIA/TIA-232 Speed and Distance LimitationsData Rate Baud Distance Feet Distance Meters U T I O N Console and Auxiliary Port ConsiderationsConsole Port Connections Installing the Module While you are installing the moduleCircuitry on the boards Installation Connecting to a WAN Connecting to the NetworkConnecting the Isdn BRI Port to an NT1 Device Connecting the Console Terminal and ModemConnecting the Console Terminal Connecting a Modem to the Auxiliary Port What to Do After Installing the Router Hardware Configuration Booting the Router for the First TimeConfiguring the Router for the First Time Begin to configure the routerConfiguring the HP AdvanceStack Internet Router Using the System Configuration Dialog Parity, and 2 stop bits On the console screenReflect the screen displays on your console OK? Enter the enable and virtual terminal passwords Enter an enable secret passwordCountry Isdn Switch Type Description Isdn Switch TypePress Return or enter yes to configure serial port Configuring Ethernet or VG InterfacesConfiguration Prompt changes to the privileged Exec prompt Using Configuration ModeRouter will now boot with the configuration you entered Using AutoInstallCisco IOS Modes of Operation Cisco IOS Software BasicsMode Usage How to Enter the Mode Prompt Operation Interface serial 0 command toCisco IOS Operating Modes Getting Context-Sensitive Help Saving Configuration Changes Configuring IsdnRouter config# username targetrouter password abc Enter the exit command to exit interface configuration mode Enter the exit command to exit global configuration mode Example Isdn ConfigurationRouter# config term Example Isdn ConfigurationConfiguration Verifying Network ConnectivityGetting More Information Reading the LEDs MaintenanceTroubleshooting LEDs on the Host Device Front PanelState Description Isdn BRI LEDs on the HP AdvanceStack Internet Router Front PanelRecovering Lost Passwords Upgrading the Boot ROMsBoot ROMs and ignore Nvram Signal to the routerEnter the initialize command to initialize the router Ration Dialog appearsPasswords, if they are not encrypted, and proceed to step NvramAre different Or replace a password, proceed to and log Press Ctrl-Z to exit configuration modeReboot the router Configuration register value you set in step0x2102 is a combination of settings Virtual Configuration Register SettingsVirtual Configuration Register Bit Meanings Bit No.a Hexadecimal MeaningVirtual configuration register is stored in Nvram Changing Configuration Register SettingsExplanation of Boot Field Configuration Register Bits 00 to Boot Field Boot ProcessVirtual Configuration Register Bit Meanings Boot field number, a hyphen, and the processor type Default Boot FilenamesOverrides the default boot filename Action or Filename BitBaud Bit Bit Address net hostCopying a Cisco IOS Image to Flash Memory Enabling Booting from Flash MemoryFollowing messages display Command reference publications System reboots using the new image in Flash memoryBack of HP Switching Hub Inserting the HP Internet Router Module into an HP Remote 2C Router to Router Connections Cable Specifications Console and Auxiliary Port Signals PinoutsIdentifying a Roll-Over Cable Cable SpecificationsConsole Port Signals and Pinouts Figure A-2. Connecting the Auxiliary Port to a Modem Auxiliary Port Signals and PinoutsEIA-530 Synchronous Serial Cable Assemblies and PinoutsFigure A-3. EIA-530 Serial Cable Assembly 60 Pin Signal 25 Pin DTE DCEa Table A-4.EIA-530 DTE Cable Pinouts DB-60 to DB-25Direction EIA/TIA-232 Table A-5. EIA/TIA-232 DCE Cable Pinouts DB-60 to DB-25 60 Pin Signal Description Direction 25 PinCable Table A-6. EIA/TIA-232 DCE Cable Pinouts DB-60 to DB-25EIA/TIA-449 Table A-7. EIA/TIA-449 DTE Cable Pinouts DB-60 to DB-37 60 Pin Signal Description Direction 37 PinTable A-8. EIA/TIA-449 DCE Cable Pinouts DB-60 to DB-37 Indicates DTE to DCE, and indicates DCE to DTE Figure A-6. V.35 Cable AssemblyTable A-9. V.35 DTE Cable Pinouts DB-60 to 34-Pin 60 Pin Signal Description Direction 34 PinCable Table A-10. V.35 DCE Cable Pinouts DB-60 to 34-PinFigure A-7. X.21 Cable Assembly Cable Specifications Table A-11. X-21 DTE Cable Pinouts DB-60 to DB-15 60 Pin Signal Description Direction 15 PinTable A-12. X.21 DCE Cable Pinouts DB-60 to DB-15 Isdn BRI Port and Cable Pinouts Table A-13. BRI Port RJ-45 PinoutRJ-45 TE b NT c Polarity Pin a HP J3138A Specifications Power ConsumptionPhysical EnvironmentalConnectors ElectromagneticIEC 950 1991 + A1, A2 / .EN60950 I 1992 + A1, A2 Safety Information Safety and Regulatory StatementsInformations concernant la sécurité Safety and Regulatory StatementsHinweise zur Sicherheit SicherheitssymboleSimboli di sicurezza Considerazioni sulla sicurezzaSímbolos de seguridad Consideraciones sobre seguridadStatements Safety Information JapaneseRegulatory Statements No repairs can be done by the customer European Community CanadaUnshielded cables and EN55022 Page Index IndexIndex See also Isdn BRI Setup Page Page J3138-90003