how to access the SOL (Serial over Lan) port in FreeBSD ?

[Eugene Grosbein]

On 15.12.2010 01:35, Luigi Rizzo wrote:

> i recently bought two motherboards with Intel AMT support,
> a remote management tool which among other things implements
> Serial Over Lan (SOL) -- which seems to be accessible
> via TCP port 16994
> 
> I have enabled the feature in the bios and built a client
> (amtterm, see http://dl.bytesex.org/releases/amtterm/ )
> which does connect to the port, but there is no data.
> 
> Especially, on the FreeBSD side i see no "uart" device
> associated with the SOL port, only uart0 which is the
> physical serial port on board.
> 
> Any idea on how to make the SOL port visible ?
> I am using a stock 8.2-beta kernel for amd64,
> tried to load ipmi but it makes no difference.

Today I successfully tested IPMI 2.0 card integrated within SuperMicro server.
For server side, I've got /dev/ttyu0 as first physical port,
/dev/ttyu1 as second and /dev/ttyu2 for SOL port automatically at boot time.

Open request for /dev/ttyu2 locks waiting for DCD
until I use ipmitool shell at remote workstation and command 'sol activate' in the shell.
It gave me clean serial channel and I've successfully got getty login prompt,
logged in, run Midnight Commander (TERM=xterm) without a problem.

Eugene Grosbein