[ale] reset the serial link on kermit on RHL 9

Jerry Yu jjj863 at gmail.com
Fri Oct 6 15:20:34 EDT 2006


no, if you mean getty (or mingetty) running on it.
I used it pretty often last summer and  only once this past January.

On 10/6/06, Jeff Lightner <jlightner at water.com> wrote:
>
>  You don't have anything in /etc/inittab keeping it open do you?
>
>
>  ------------------------------
>
> *From:* ale-bounces at ale.org [mailto:ale-bounces at ale.org] *On Behalf Of *Jerry
> Yu
> *Sent:* Friday, October 06, 2006 3:05 PM
> *To:* Atlanta Linux Enthusiasts
> *Subject:* Re: [ale] reset the serial link on kermit on RHL 9
>
>
>
> tried 'close' that a few times and even exiting Kermit with  "OK to exit?
> yes Closing /dev/ttyS1...OK".
> the same kermit still works through ttyS0 to a different device.
> I guess the next thing I'll try is to have the co-lo tech to switch ttyS0
> in, so I can see whether the console port on the switch itself is to blame.
>
> On 10/6/06, *Christopher Fowler* <cfowler at outpostsentinel.com> wrote:
>
> On Fri, 2006-10-06 at 13:20 -0400, Jerry Yu wrote:
> > We have a serial link to a Catalyst 2900XL from a built-in serial port
> > (ttyS1) on a Dell PE2450 running RHL9. I used kermit to configue the
> > switch successfully in the past ( 5 months ago, I believe). Now I saw
> > no response from a kermit session, though input wasn't rejected
> > either. The kermit session behaves like the serial link is active:
> > open/close port commands succeeded promptly and no 'sense-carrier off'
> > prompt either.
> > The switch itself hums along just fine and is our production switch at
> > a co-lo.  Any way I can somehow 'clear' or 'reset the serial
> > connection', w/o risking upsetting the switch itself?
>
> Just close the port and reopen it.  That will drop DTR.
>
> >
> >
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