Chabot College

CISCO NETWORKING ACADEMYCISCO NETWORKING ACADEMY

Chabot CollegeChabot College

ELEC 99.08ELEC 99.08Hyperterminal Access to Routers


What is Hyperterminal?What is Hyperterminal?

• A PC application installed on all Windows machines that provides “terminal emulation”

• It enables the PC to act like a terminal.

• So what is a terminal...


What is a Terminal?What is a Terminal?

• User box– Monitor– Keyboard– Serial port (connects to host)

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SERIAL 0 SERIAL 1 CONSOLE AUX

CISCO 2514

Input: 100-240VACFreq: 50.60 HzCurrent: 1.2-0.6AWatts: 40W

AUIAUI

• Has no:– CPU– Storage– Operating system


PC Terminal EmulationPC Terminal Emulation

• PC with terminal emulation software– Hyperterminal– WRQ Reflections– etc.


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• Consoleconnection:– Serial

– Rollover cable

– Point to point

– Requires physical access to router

COM1

con0


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• Telnetconnection:– via network– Ethernet cable

NIC

e0

– Shared, multipoint

– Remote access to router


Serial CommunicationsSerial Communications

• Data sent one bit at a time (serially)• Wires for:

– Send– Receive– Signaling & flow-control (CTS, DTR, etc.)

• Many standards:– EIA/TIA-232 (PC)– V.35 (router)



• Terminal serial connectors– DB25 (25 pin)

• PC serial connectors– DB25– DB9



• Cisco supplies RJ45 to DB adapters to connect rollover cables to DB25 and DB9



• Serial devices connected point-to-point must have matching settings:– bits per second (baud rate)– number of data bits– parity– number of stop bits– flow control method



• Required settings for Cisco router con0:– bits per second:9600– data bits: 8– parity: none– stop bits: 2– flow control: none


Using HyperterminalUsing Hyperterminal• Start | Programs | Accessories |Communications | Hyperterminal• When prompted, name your “connection”.• In the “Connect To” dialog, from the “Connect Using:” list, select:

– TCP/IP Winsock for a telnet network connection to the router’s vitual terminal ports. When prompted, specify

• the target router’s IP address.

– Direct to Com1 for a serial connection to the router console port. When prompted, specify:

• bits per second: 9600• data bits: 8• parity: none• stop bits: 2• flow control: none

• Press <return> or <enter> a few times to activate the connection.• (Try it!)


Standard Console ConnectionsStandard Console Connections


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Our Lab SetupOur Lab Setup

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PC-A terminal PC-B

patch cable

straight-thru

rollover rollover

rtr-A

rtr-B

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