Re: remote serial console on Ultra 10
On Wed, Jan 09, 2002 at 11:44:46AM +0100, Marcin Sochacki wrote:
> Hello,
>
> I have the following setup:
> - Sun UltraSparc 10 machine,
> - Happy Meal fast-ethernet interface,
> - Creator 3D card with VGA monitor,
> - Debian Potato.
>
> The server is connected in some remote place, so I can easily connect
> there using SSH when everything runs fine.
> But the problem arises when something goes wrong and I need access to
> the console.
>
> I'm thinking about connecting an external modem and dialing there
> in case of failure.
>
> How do I configure the following:
> 1) remote access to OpenBoot console,
> 2) remote access to SILO prompt and Linux shell?
>
> The modem is Multitech MT2834BLK, which is said to be very good for ISP
> applications.
Just connect the modem to Serial A and configure it for autoanswer. You
should be able to dial-in using mincom or similar. Make sure the modem
sets up at 9600baud. To configure shell login, edit /etc/inittab and
uncomment the T0 line (for ttyS0 getty) and remember to run "init q" to
enable (or reboot). One you have that you can login as if you were on
the console. The OpenBoot/SILO access is automatic. You can send a
serial "break" to drop to OpenBoot.
Alternatively, you can setup a second machine that you can ssh to, and
connect it to the Ultra via a NULL modem cable.
Ben
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