I sent this to questions a couple of weeks ago, but didn't receive any helpful replies. Anyone doing this - two machines connected by a null-modem cable with the ability to create a serial terminal session from either side, with suitable juggling of getty processes? John
Hi, I have two FreeBSD boxes, one runs headless and uses a serial console. This serial console is provided by the second machine, via a null-modem cable: +------------+ +------------+ | machine 1 | | machine 2 | | 3.5-STABLE | | 4.1-STABLE | | HEADLESS | Null-modem cable | | | port sio0 |=======================| port sio1 | +------------+ +------------+ The serial console works perfectly. I can use cu / tip on machine 2 to watch boot messages and log in (I have configured /etc/ttys to provide a getty on /dev/ttyd0 on machine 1). I would like to be able to do the reverse - log in to machine 1 through a network connection, and use it to control machine 2. My steps to accomplish this were: on Machine 1: change /etc/ttys to remove the getty on /dev/ttyd0 kill -HUP 1 on Machine 2: change /etc/ttys to run a getty on /dev/ttyd1 kill -HUP 1 on Machine 1: cu -l cuaa0 Doesn't work. 'cu' tells me I am connected, but no login prompt appears. No characters I type are echoed. I then removed the getty on machine 2 and tried some simpler experiments: Machine 1 Machine 2 cu -l cuaa0 cu -l cuaa1 type characters echoed characters echoed type So the cable is OK. The connection _can_ work. Machine 1 Machine 2 cat < /dev/ttyd0 cu -l cuaa1 lines echoed type then Enter key So the line-discipline is different, but there is no problem using the ttyd0 device on machine1. Machine 1 Machine 2 cu -l cuaa0 cat < /dev/ttyd1 type (no echo on terminal) NO ECHO This does not work. It appears that the tty device on machine 2 is my problem. Any ideas how I can make it work? There are no permissions problems, the devices on both machines have been re-built (so they are not stale device files). Please reply directly (and thank you if you've read this far!) since I'm not on the questions list. John -- Unreal City, Under the brown fog of a winter dawn, finger [EMAIL PROTECTED] for pgp public key
