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, 2010 at

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 u...@spoerlein.net 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 Marin Atanasov
On Fri, Jan 22, 2010 at 10:02 AM, N.J. Mann n...@njm.me.uk 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

Re: Multiple serial consoles via null modem cable

2010-01-22 Thread Nicolas Rachinsky
* Jeremy Chadwick free...@jdc.parodius.com [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

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 fbsd-stabl...@ml.turing-complete.org wrote: * Jeremy Chadwick free...@jdc.parodius.com [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

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 free...@jdc.parodius.comwrote: On Wed, Jan 20, 2010 at 08:46:48AM +0200, Marin Atanasov wrote:

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 on secure

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 u...@spoerlein.net 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

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

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 able

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 dna...@gmail.com 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

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

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

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 free...@jdc.parodius.comwrote: On Fri, Jan 15, 2010 at 08:34:17AM +0200, Marin Atanasov wrote: Thank you a lot for your feedback!

Multiple serial consoles via null modem cable

2010-01-12 Thread Marin Atanasov
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 possible only to connect two machines and they need to be connected on

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 it is

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 multiple

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 Torfinn Ingolfsen
On Tue, 12 Jan 2010 08:08:16 -0800 Jeremy Chadwick free...@jdc.parodius.com 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)

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

Re: Multiple serial consoles via null modem cable

2010-01-12 Thread Charles Sprickman
On Jan 12, 2010, at 12:04 PM, Boris Samorodov b...@ipt.ru 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,

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 b...@ipt.ru 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

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 b...@ipt.ru wrote: On Tue, 12 Jan 2010 17:14:44 +0200 Marin Atanasov wrote: I'm thinking about the following situation - 1 system

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 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 b...@ipt.ru wrote: On Tue, 12 Jan 2010 17:14:44 +0200 Marin Atanasov wrote: I'm

Re: Multiple serial consoles via null modem cable

2010-01-12 Thread Peter Jeremy
On 2010-Jan-12 08:08:16 -0800, Jeremy Chadwick free...@jdc.parodius.com 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