[rescue] Need help with Cisco 3620

[Brian]

have flow control set to none?

    Bri

----- Original Message -----
From: "Eric Webb" <ttlchaos at randomc.com>
To: <ttlchaos at randomc.com>; "The Rescue List" <rescue at sunhelp.org>
Sent: Monday, February 17, 2003 12:39 AM
Subject: Re: [rescue] Need help with Cisco 3620


> Well, problems again.  I was attempting to send an image to this unit via
> xmodem over the console port when trouble struck.  After that operation I
> haven't had any console connectivity with the unit to speak of -- more of
the
> serial garbage.  You can see it trying to talk, but it's just garbage.
>
> I've tried several port configurations to no avail... 9600n81 and n82,
2400n81
> and n82, 4800, 19200, etc.  It was previously working at 2400 n81 by some
> strange luck.  I've been tinkering with the DUART_RST jumper again but it
> seems of no benefit.
>
> So then I started looking elsewhere.  Power supply.  Yep, GND, +5,
+12, -12
> all good.  Checked the ground pin on the serial port -- yeah, it's
connected
> to the chassis and power supply ground no problem.  Checked across TXD and
> GND and get +12V as well.
>
> At this point do we just assume the DUART is bad and just move on with
life?
> It seems a shame because I can tell the router is _trying_ to boot, I just
> can't see it.  This _sounds_ like an RS-232 grounding problem, doesn't it?
>
>
> Eric
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