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

[Jeff Lightner]

You don't have anything in /etc/inittab keeping it open do you?

 

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From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of
To: ale at ale.org
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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