[CentOS] is it possible to login to a switch via RS232 / serial port from the shell?

[Rudi Ahlers]

John R Pierce wrote:
> Rudi Ahlers wrote:
>> That was a typo in my first post. I am using /dev/ttyS0 - with a bit 
>> S :)
>>
>> I have also noticed that there's no tty* in "dmesg | grep tty" or 
>> grep tty /var/log/demsg
>>
>> could this be the problem / reason? I'm running CentOS 5.1 x64 with 
>> Xen 3.0 kernel
>
> hmmm.   5.1 i686 w/o xen...
>
> $ grep tty /var/log/dmesg
> serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
> serial8250: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
> 00:0b: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
> 00:0c: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
>
> $ sudo setserial /dev/ttyS0
> /dev/ttyS0, UART: 16550A, Port: 0x03f8, IRQ: 4
>
> $ sudo setserial /dev/ttyS1
> /dev/ttyS1, UART: 16550A, Port: 0x02f8, IRQ: 3
>
> (old school pentium-III 800 on a i815 board)
> _______________________________________________
ok, so I think this is the problem then :)


[root at venus /]# grep tty /var/log/dmesg
Xen virtual console successfully installed as ttyS0
[root at venus /]# setserial /dev/ttyS0
Cannot get serial info: Invalid argument
[root at venus /]#

It may seem that Xen uses ttyS0 for itself, but how do I get around it?


-- 

Kind Regards
Rudi Ahlers
CEO, SoftDux

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