Subject: Re: serial connection on debian on sun ultra10



It depends.

Simple RX-TX-GND is enough for some simple tasks, install of Solaris older releases on ultra10 is possible with such cable.
Minicom 9600N1 and no flow-control is ok.

On the other hand, you will not be able to login over serial on fresh installed Solaris with this cable. I learned that hard way, dissasambled connectors on DB-9 null modem cable and soldered extra loops on each end to provide correct DTR DSR signals.
It works ONLY if you have correct cable, and minicom is configured with "hardware flow control", and with cable connected it will show "ONLINE" in status bar. Or maybe it was HyperTerminal in windooze.

Modern servers use 19200 baud with software flow control with cisco style RJ45 serial cables (blue), and even rely on TTL low voltage signals.... so old serial is not the same as new. similar as samba/netbios protocols from win3.1 era :)

Gasha

On 2017.06.12. 11:32, John Paul Adrian Glaubitz wrote:
On Mon, Jun 12, 2017 at 09:56:08AM +0200, sacarde wrote:
do you confirm this is the right null-modem?

http://sacarde.altervista.org/np/serial4.jpg

Compare it yourself:

https://en.wikipedia.org/wiki/Null_modem#Wiring_diagrams

Adrian


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