[RndTbl] Need help with serial connection

Kevin McGregor kevin.a.mcgregor at gmail.com
Fri May 27 17:21:49 CDT 2011


Makes sense. I'll try it on Monday.

On Fri, May 27, 2011 at 4:01 PM, Adam Thompson <athompso at athompso.net>wrote:

> Usually it's the other way 'round, as the mgmt port is used for remote
> "lights-out" installs.
> You can connect to a virtual console port through the sun mgmt port, so you
> should never need both.
>
>
> Kevin McGregor <kevin.a.mcgregor at gmail.com> wrote:
>
> >No frame buffer is present. I just want to manage the machine via serial
> >port for now. You can't use the management port until you've installed the
> >OS and configured it, is my understanding.
> >
> >On Fri, May 27, 2011 at 2:28 PM, Adam Thompson <athompso at athompso.net
> >wrote:
> >
> >> Not if there's a frame buffer installed.  And that sound like you're in
> the
> >> host serial port, not the management port.  Which do you want to be
> >> connected to?
> >>
> >>
> >> Kevin McGregor <kevin.a.mcgregor at gmail.com> wrote:
> >>
> >> >Do I have the wrong cable? I think it's one of those ones used to
> attach
> >> to
> >> >Cisco equipment, 9-pin RS-232 to RJ-45.
> >> >
> >> >I had it working, briefly, but it stopped again. I think it had booted
> >> from
> >> >the CD, and was pouring out messages about a buffer overflow plus a
> >> >language-selection menu (repeatedly) as fast as 9600 bps would allow.
> Then
> >> I
> >> >removed the CD and rebooted and now nothing. With a Sun Fire, shouldn't
> I
> >> be
> >> >able to turn the front-panel switch to "Normal" and press the power
> >> button?
> >> >I did that, and I'm getting nothing on the serial interface. I should
> be
> >> >getting POST messages at least.
> >> >
> >> >On Fri, May 27, 2011 at 10:43 AM, Adam Thompson <athompso at athompso.net
> >> >wrote:
> >> >
> >> >> Turn off hardware flow control (RTS/CTS or DTS/DSR) and use software
> >> flow
> >> >> control (XON/XOFF) instead.
> >> >> Also, if you don't want to use minicom, (the modem AT initialization
> is
> >> a
> >> >> pain to turn off completely) just use screen instead:
> >> >> "screen /dev ttys0 9600"
> >> >> -Adam
> >> >>
> >> >>
> >> >> Kevin McGregor <kevin.a.mcgregor at gmail.com> wrote:
> >> >>
> >> >> >This is driving me nuts, since it was working and now it isn't and I
> >> have
> >> >> no
> >> >> >idea what has changed. I hope someone can help.
> >> >> >
> >> >> >I have a SunFire V490 at work. I also have a HP ProLiant server in
> the
> >> >> same
> >> >> >rack, which is running Ubuntu Server 10.04. I've got the weird cyan
> >> serial
> >> >> >cable plugged in to the lone serial port on the ProLiant and the
> other
> >> end
> >> >> >plugged into the V490 port ("SERIAL"). I've got minicom running on
> the
> >> >> Linux
> >> >> >box configured for 9600, 8N1 on /dev/ttyS0. minicom's status line
> >> reports
> >> >> >"OFFLINE", and I get no response to any keyboard input.
> >> >> >
> >> >> >What's wrong? I can freely power off/on the SunFire and anything
> else I
> >> >> want
> >> >> >to do with it. I have the keys for the front panel, too. Do I have
> to
> >> >> switch
> >> >> >it to diagnostics mode or something? We had it working before, and
> it
> >> was
> >> >> >quite easy.
> >> >> >
> >> >> >Help!
> >> >> >
> >> >> >Kevin
> >> >> >
> >> >> >_______________________________________________
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> >> >>
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