On Thu, 28 Jan 1999, George Mailer wrote:
> I hope this question is relevant to this group but I feel certain users
> of multiple diald will have addressed it previously.
> I have a Redhat 5.1 system at work succesfully working with an internal
> USR V Anything modem using diald to connect to our ISP on demand. The
> same system also has an uninteruptable power supply communicating on the
> second tty.
> We now have a requirement to set up another modem and copy of diald to
> set up a ppp link to our head office server on demand.
> - how best to add a 3rd. serial port - is there an issue with available
> IRQ's ??
Yes, to save aggravation you should reserve an IRQ just for the serial
board.
> - are there serial port boards ( for use with an external modem), or
> internal modem types that might be better ? ( I have seen a serial
> card - brief description 16C650 - Hi-IRQ 3,4,5,6,7,9,10,11,12,15;
> Hi-COM 1 to 8 that is cheap ).
Don't get an internal modem: they can't be powered down independently of
the computer. (And they don't have those nice blinkenlights, which are
actually *really* useful for diagnosing networking errors.)
As far as I can tell, most new high-speed serial boards are the same, but
I have limited experience. Maybe you should ask in the hardware group (or
read a FAQ).
To save yourself aggravation, get a modem exactly like your existing
modem, connect it to the second serial port, and connect the UPS to the
new third serial port.
> - are there any instructions for installing a second copy of diald that
> might be followed ? ( I obviously can't just run rpm -i diald and
> expect it to not copy over my existing setup !).
You certainly won't need another set of binaries, so "rpm anything" is
right out. You should follow the instructions given previously for
multiple diald, but change the port for the second copy of diald to the
second modem. (Relatively) simple. :-)
Ed
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