Ken Fuchs wrote:

>I'm trying to access my Catalyst 1900 via the serial console.
>
>I built a DB9 to RJ-45 cable by cutting a DB9 cable and RJ-45 cable in
>half and soldering the appropriate ends together as defined here:
>
>http://www.hardwarebook.net/cable/serial/cuscoconsole9.html
>
>It is based on:
>
>http://www.cisco.com/univercd/cc/td/doc/product/lan/28201900/1928v8x/19icg8x/19icinst.htm
>
>The cable I built is identical to the cable described in this Cisco
>manual, except it is a single piece cable (doesn't have crossover RJ-45
>and RJ-45 crossover to DB9 adapter and separate modules).
>
>------
>
>I can't seem to establish a serial connection between my Linux PC serial
>port and the Catalyst 1900.  I'm using minicom.  I've tried using
>/dev/ttyS0, /dev/ttyS1, /dev/ttyS2, and /dev/ttyS3 to no avail.  I'm not
>even sure the serial ports on this machine work, since I've never tried
>to use them before.  (I have an internal modem at /dev/ttyS4 that worked
>a few years ago, but is now broken.)  I've set the port to 9600, 8 bits,
>no parity, 1 stop bit, and no flow control just as specified by the 1900
>manual.
>
>I assume the 1900 should send something to the serial console when it
>powers up.  It probably should also send something when it receives
>something from the serial console as well.
>
>Does anyone have any suggestions concerning establishing a serial
>connection with the Cisco Catalyst 1900's serial console?
>
>  
>
It will give you a version and other stuff on bootup, apart from making 
sure that you do not have serial ports disabled in BIOS( that happens) 
I`d still blame the cable. Did you just cut of a jack off an existing 
rj-45 cable? Becouse the pinout on the cisco console cable is not the 
same as with EIA/TIA 568a or 568b standards. I sugest you check it. If 
you have a ohmmeter/voltmeter try to check each pin. I did this kind of 
cable myself, and it worked. Though I didn`t use instructions from the 
hardwarebook.net. Check the cisco site it has a pinout from db9 to rj45 
connector.

>Sincerely,
>
>Ken Fuchs <kfuchs at winternet.com>
>
>_______________________________________________
>TCLUG Mailing List - Minneapolis/St. Paul, Minnesota
>http://www.mn-linux.org tclug-list at mn-linux.org
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>
>  
>


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