Multiple serial consoles via null modem cable
uqs at spoerlein.net
Thu Jan 21 16:26:51 UTC 2010
On Thu, 21.01.2010 at 11:37:06 +0200, Marin Atanasov wrote:
> Here's what I did:
> box1 COM1/ttyd0 -> box2 COM1/ttyd0 -> using null modem cable
> box1 COM2/ttyd1 -> box3 COM1/ttyd0 -> using null modem cable
> On box1 I have this in /etc/ttys:
> ttyd0 "/usr/libexec/getty std.9600" vt100 on secure
> ttyd1 "/usr/libexec/getty std.9600" vt100 on secure
> Now if I want to connect to box1 from box2 or box3 through the serial
> connection it should work, right?
> But I only can connect to box1 from box2, because box2's COM port is
> connected to box1's COM1 port.
Are there actually two gettys running on the serial ports? Did you do
kill -1 1 after the changes to /etc/ttys?
On box1, what do the following commands produce
egrep "uart|sio" /var/run/dmesg.boot
pgrep -fl getty
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