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I don't know what are you trying to. Lets start by the first things first.
You have to connect your machines with a null modem cable. Basically, you need three wires in this cable: logical ground connecting both pins 7 of db25, pin 2 of one side connecting pin 3 of the other side and pin 3 of one side connecting pin 2 of the other side. All this description is for 25 pin connector. You may google with "null modem" between quotes. After having a cable be sure you have the you Sun port enabled for login and use minicom on the linux side to configure the port and open a session in the Sun. When you get this, you know that all the physical configuration is ok.
After this, I need to know if you want to just open a session in linux from the Sun, or want to establish a network connection. All this is possible, depending on the system software you have on the Sun machine.
I attached a DB25->RJ45 adapter to the Sun machine and a DB9->RJ45 adapter to one of the COM ports on the Linux box. Finally, I connected the two machine with a RJ45 cable.
I tried minicom, but I wasn't able to get it to connect.
I installed kermit, but it still doesn't connect:
(/root/) C-Kermit>set line /dev/ttyS5
(/root/) C-Kermit>set speed 9600
/dev/ttyS5, 9600 bps
(/root/) C-Kermit>set parity none
(/root/) C-Kermit>set stop-bits 1
(/root/) C-Kermit>set carrier-watch off
Connecting to /dev/ttyS5, speed 9600
Escape character: Ctrl-\ (ASCII 28, FS): enabled
Type the escape character followed by C to get back,
or followed by ? to see other options.
nothing happens after this - the connection is never established...
Is there something I'm missing? or is it some hardware/driver issue?
I am using null-modem cable. I tried with a standard cable and a null-modem cable, but neither worked. I also tried to connect to another device I have w/o success (I know I was able to connect to it using Windows' hyper terminal before). Any ideas?
I would appreciate any suggestion, advice, ideas...
I tried Windows' hyper terminal and it worked w/o any problems...?!? Perhaps I need to set some parameter in Kermit which Windows sets automatically...? In windows I just set the baud rate, parity, data bits and stop-bits, and pressed 'ok'...
Maybe it's a driver issue in Linux even though 'setserial -a' produce a nice output...