[starwars]

Hi Guys,

Does anyone know how I can change the default baud rate on a p520 running aix5.3 from 19200 to 1200 baud?

I haven't got a HMC, only a IBM infowindow display.

I'm trying to connect a UPS to vty2 (serial T2) but it's not wanting to play, and I suspect it's a baud rate issue (ups expecting 1200).

thanks for your help.

[kinay61]

If you want to change the baud rate on a p520,

do 'smit tty', 'Change / Show characteristics of a TTY', choose your tty et you can modify the line 'BAUD rate'

[starwars]

Thanks for the reply, I don't seem to have a 'Baud' option in 'smit tty', it lists everything else you could imagine to do with vty2 but not baud?

Here's my options:

TTY
TTY type
TTY interface
Description
Status
Location
Parent adapter
PORT number
Enable LOGIN
TIME before advancing to next port setting
TERMINAL type
FLOW CONTROL to be used
STTY attributes for RUN time
STTY attributes for LOGIN
LOGGER name
STATUS of device at BOOT time
STREAMS modules to be pushed at OPEN time
INPUT map file
OUTPUT map file
CODESET map file

POSIX special control characters:

INTERRUPT character
QUIT character
ERASE character
KILL character
END OF FILE character
END OF LINE character
2nd END OF LINE character
DELAY SUSPEND PROCESS character
SUSPEND PROCESS character
LITERAL NEXT character
START character
STOP character
WORD ERASE character
REPRINT LINE character
DISCARD character
Apply change to DATABASE only

[kinay61]

Is your vty2 a Terminal ?

In smit for your TTY, The values must be
TTY type = tty
TTY interface = rs232
Description = Terminal asynchrone

[starwars]

no, its a ups.

ok, i've got it sorted now. I went into ASMI (by plugging a terminal into serial 1 when the server was in standby), option 2, then option 6. select the serial port and change the baud rate there.

That fixed it, and everything looks to be connecting now.

Thanks for your help anyway.

[vasco]

Originally Posted by starwars

no, its a ups.

ok, i've got it sorted now. I went into ASMI (by plugging a terminal into serial 1 when the server was in standby), option 2, then option 6. select the serial port and change the baud rate there.

That fixed it, and everything looks to be connecting now.

Thanks for your help anyway.

Don't forget to disable login on that tty or your UPS and the AIX whould be talking to one another forever. Some machines will get an high uptime in this situation.

[starwars]

Originally Posted by vasco

Don't forget to disable login on that tty or your UPS and the AIX whould be talking to one another forever. Some machines will get an high uptime in this situation.

thanks, yeah login is disabled in smit/tty.
I do get comms continually between aix and the ups, but this must just be comms check and status report, though I don't see why all the data needed, should just heartbeat every 30 secs.

[vasco]

Probably. I never had an UPS connected to an AIX so I don't know the ammount of traffic in "normal" opperation. But I had a lot of problems, years ago, because of a tty with login enable connected to an async port of a Motorola X.25 PAD. The wellcome messages of the pad was being sent producing a login error, then the pad would read the error as his login and produce a login error, then that erros was sent to the aix producing another login error... And so on... LOL...