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 >https://mailman.real-time.com/mailman/listinfo/tclug-list > > > _______________________________________________ TCLUG Mailing List - Minneapolis/St. Paul, Minnesota http://www.mn-linux.org tclug-list at mn-linux.org https://mailman.real-time.com/mailman/listinfo/tclug-list