Re: Multiple serial consoles via null modem cable

2010-01-22 Thread Michael Loftis
--On Friday, January 22, 2010 10:05 PM +0100 Nicolas Rachinsky wrote: * Jeremy Chadwick [2010-01-19 23:46 -0800]: You cannot do something like where box1 COM1 is wired to box2 COM1, and depending on what box you're on doing the "cu -l ttyu0" from, get a login prompt on the other. It does

Re: Multiple serial consoles via null modem cable

2010-01-22 Thread Nicolas Rachinsky
* Jeremy Chadwick [2010-01-19 23:46 -0800]: > You cannot do something like where box1 COM1 is wired to box2 COM1, and > depending on what box you're on doing the "cu -l ttyu0" from, get a > login prompt on the other. It doesn't work like that. :-) Isn't the reason for different dial-in and dial

Re: Multiple serial consoles via null modem cable

2010-01-22 Thread Marin Atanasov
On Fri, Jan 22, 2010 at 10:02 AM, N.J. Mann wrote: > In message <717f7a3e1001210137p7884adcbxc66a4f7fff928...@mail.gmail.com>, > Marin Atanasov (dna...@gmail.com) wrote: > > Hello Jeremy, > > > > Now I'm a little confused :) > > > > I've made some tests with my machines and a couple of nu

Re: Multiple serial consoles via null modem cable

2010-01-22 Thread Jeremy Chadwick
On Fri, Jan 22, 2010 at 08:36:51AM +0200, Marin Atanasov wrote: > On Thu, Jan 21, 2010 at 6:26 PM, Ulrich Spörlein wrote: > > > 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

Re: Multiple serial consoles via null modem cable

2010-01-22 Thread N.J. Mann
In message <717f7a3e1001210137p7884adcbxc66a4f7fff928...@mail.gmail.com>, Marin Atanasov (dna...@gmail.com) wrote: > Hello Jeremy, > > Now I'm a little confused :) > > I've made some tests with my machines and a couple of null modem cables, and > here's what I've got. > > On Wed, Jan 20,

Re: Multiple serial consoles via null modem cable

2010-01-21 Thread Marin Atanasov
On Thu, Jan 21, 2010 at 6:26 PM, Ulrich Spörlein wrote: > 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

Re: Multiple serial consoles via null modem cable

2010-01-21 Thread Ulrich Spörlein
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

Re: Multiple serial consoles via null modem cable

2010-01-21 Thread Marin Atanasov
Hello Jeremy, Now I'm a little confused :) I've made some tests with my machines and a couple of null modem cables, and here's what I've got. On Wed, Jan 20, 2010 at 9:46 AM, Jeremy Chadwick wrote: > On Wed, Jan 20, 2010 at 08:46:48AM +0200, Marin Atanasov wrote: > > Hello, > > > > Using `cu' o

Re: Multiple serial consoles via null modem cable

2010-01-19 Thread Jeremy Chadwick
On Wed, Jan 20, 2010 at 08:46:48AM +0200, Marin Atanasov wrote: > Hello, > > Using `cu' only works with COM1 for me. > > Currently I have two serial ports on the system, and only the first is able > to make the connection - the serial consoles are enabled in /etc/tty, but as > I said only COM1 is

Re: Multiple serial consoles via null modem cable

2010-01-19 Thread Marin Atanasov
Hello, Using `cu' only works with COM1 for me. Currently I have two serial ports on the system, and only the first is able to make the connection - the serial consoles are enabled in /etc/tty, but as I said only COM1 is able to make the connection. Regards, Marin On Sun, Jan 17, 2010 at 3:32 PM

Re: Multiple serial consoles via null modem cable

2010-01-17 Thread Ronald Klop
On Fri, 15 Jan 2010 07:34:17 +0100, Marin Atanasov wrote: Thank you a lot for your feedback! Now to the real question again, because I'm a little confused now - can I still get a usb-to-serial port converter having let's say 8 serial ports and then connect each machine to the usb-to-serial

Re: Multiple serial consoles via null modem cable

2010-01-14 Thread Marin Atanasov
Yeap, that makes sense :) Thank you, I'm gonna try it as soon as I get that device :) Thanks again, Marin On Fri, Jan 15, 2010 at 8:45 AM, Jeremy Chadwick wrote: > On Fri, Jan 15, 2010 at 08:34:17AM +0200, Marin Atanasov wrote: > > Thank you a lot for your feedback! > > > > Now to the real ques

Re: Multiple serial consoles via null modem cable

2010-01-14 Thread Jeremy Chadwick
On Fri, Jan 15, 2010 at 08:34:17AM +0200, Marin Atanasov wrote: > Thank you a lot for your feedback! > > Now to the real question again, because I'm a little confused now - can I > still get a usb-to-serial port converter having let's say 8 serial ports and > then connect each machine to the usb-t

Re: Multiple serial consoles via null modem cable

2010-01-14 Thread Marin Atanasov
Thank you a lot for your feedback! Now to the real question again, because I'm a little confused now - can I still get a usb-to-serial port converter having let's say 8 serial ports and then connect each machine to the usb-to-serial hub and manage them remotely from a single location (the host hav

Re: Multiple serial consoles via null modem cable

2010-01-12 Thread Peter Jeremy
On 2010-Jan-12 08:08:16 -0800, Jeremy Chadwick wrote: [serial to TCP/IP adapters] >As far as present-day devices go, the ones I can recommend are the ... > >You can also consider looking for used hardware -- either Xyplex devices DECservers are good for this sort of thing as well. AFAIK we're st

Re: Multiple serial consoles via null modem cable

2010-01-12 Thread Charles Sprickman
On Tue, 12 Jan 2010, Jeremy Chadwick wrote: On Tue, Jan 12, 2010 at 02:50:29PM -0500, Charles Sprickman wrote: On Tue, 12 Jan 2010, Charles Sprickman wrote: On Jan 12, 2010, at 12:04 PM, Boris Samorodov wrote: On Tue, 12 Jan 2010 17:14:44 +0200 Marin Atanasov wrote: I'm thinking about th

Re: Multiple serial consoles via null modem cable

2010-01-12 Thread Marten Vijn
On Tue, 2010-01-12 at 17:14 +0200, Marin Atanasov wrote: > Hello there, > > I'd like to ask you about the following - is it possible to have multiple > serial consoles coming from a single host? > > What I am talking about is connecting multiple machines using a null modem > cable - I know it is

Re: Multiple serial consoles via null modem cable

2010-01-12 Thread Jeremy Chadwick
On Tue, Jan 12, 2010 at 02:50:29PM -0500, Charles Sprickman wrote: > On Tue, 12 Jan 2010, Charles Sprickman wrote: > > >On Jan 12, 2010, at 12:04 PM, Boris Samorodov wrote: > > > >>On Tue, 12 Jan 2010 17:14:44 +0200 Marin Atanasov wrote: > >> > >>>I'm thinking about the following situation - 1 sy

Re: Multiple serial consoles via null modem cable

2010-01-12 Thread Charles Sprickman
On Tue, 12 Jan 2010, Charles Sprickman wrote: On Jan 12, 2010, at 12:04 PM, Boris Samorodov wrote: On Tue, 12 Jan 2010 17:14:44 +0200 Marin Atanasov wrote: I'm thinking about the following situation - 1 system acting like a host with a serial port hub, each port of the hub is connected to

Re: Multiple serial consoles via null modem cable

2010-01-12 Thread Charles Sprickman
On Jan 12, 2010, at 12:04 PM, Boris Samorodov wrote: On Tue, 12 Jan 2010 17:14:44 +0200 Marin Atanasov wrote: I'm thinking about the following situation - 1 system acting like a host with a serial port hub, each port of the hub is connected to a different machine on sio0, using null mode

Re: Multiple serial consoles via null modem cable

2010-01-12 Thread Boris Samorodov
On Tue, 12 Jan 2010 17:14:44 +0200 Marin Atanasov wrote: > I'm thinking about the following situation - 1 system acting like a host > with a serial port hub, each port of the hub is connected to a different > machine on sio0, using null modem cables. Along with milti-io serial cards we use multi-

Re: Multiple serial consoles via null modem cable

2010-01-12 Thread Torfinn Ingolfsen
On Tue, 12 Jan 2010 08:08:16 -0800 Jeremy Chadwick wrote: > Yes this is possible with FreeBSD -- but you'll need to purchase a And easy enough with conserver[1] and conserver-com[2] in ports. No reason to exclude FreeBSD from this task. :) References: 1) http://www.freshports.org/comms/conserv

Re: Multiple serial consoles via null modem cable

2010-01-12 Thread Olivier Gautherot
Hi Marin, I'd like to ask you about the following - is it possible to have multiple > serial consoles coming from a single host? > In theory, no :-) RS232 is a point-to-point connection. If you want to feed several consoles through the same serial port, you will need some kind of switch to route

Re: Multiple serial consoles via null modem cable

2010-01-12 Thread Michal
On 12/01/2010 16:08, Jeremy Chadwick wrote: > On Tue, Jan 12, 2010 at 05:14:44PM +0200, Marin Atanasov wrote: >> Hello there, >> >> I'd like to ask you about the following - is it possible to have multiple >> serial consoles coming from a single host? >> >> What I am talking about is connecting mul

Re: Multiple serial consoles via null modem cable

2010-01-12 Thread Jeremy Chadwick
On Tue, Jan 12, 2010 at 05:14:44PM +0200, Marin Atanasov wrote: > Hello there, > > I'd like to ask you about the following - is it possible to have multiple > serial consoles coming from a single host? > > What I am talking about is connecting multiple machines using a null modem > cable - I know