>
> 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 ??
>
Arg. PC IRQs are a pain. The idiot who designed the ISA bus
didn't make them wire-or, so only one card can drive an ISA interrupt.
(well, some people have, in violation of the laws of physics, gotten
it to work). So you need an interrupt.
> - 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 ).
Should be ok. This is good since you can set the interrupt to
a high unused value. It is easiest if the board has jumpers,
harder if it is PNP (there is an isa-pnp package), and hardest
if it is "Jumperless" 'cause you have to boot dos and run
the setup program. (Hmm, does this apply to serial as well
as ethernet cards?).
>
> - 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 !).
>
Someone needs to write this up.
You can indeed run two dialds. You need to
1. create a second diald.conf file. Make sure the second doesnt
set defaultroute. Set a different pid file. Set a different
fifo if you use dctrl.
2. Duplicate the init.d script and change it to start the
second diald.
> Many thanks in advance - I'm afraid I'm a newbie trying to setup something
> that I suspect might even challenge a more experienced person a little !
>
This is a fairly complex setup. I've run dual dialds, but
not to two different modems. (although that may change soon).
Plan for it to take some time to get working. Also, if the existing
system is being used by people all the time you might want to either
get the dual-dialing setup working on another system first, or
schedule things over the weekend (Make Backups!!!). Between fighting
with ISA interrupts and dual dialds, budget more than a day and
a sufficency of your beverage of choice.
Hmm... Brain in engaging... Do you have another spare machine? Why
not have the extra machine run diald to the head office. Have everyone
use the first machine as the default gateway. On the first machine, add
a static route to the head office subnet pointing to the second machine.
That might be less disruptive than mucking with the original server.
(Still, it is a NT-type solution to drop in another box at the dro
of a hat). Once you get it working you can tackle merging
the setups. You can do it on the spare machine so as not to
disrupt the office too much. Someone, somewhere, has got
to have a 486/66 around somewhere!
Although I'm sure the dual-modem dual-diald setup will work on a single
machine, you might want to consider two machines.
-- cary
> George Mailer
> Tel +44 (0)-181-395-9027
> Mob +44 (0)-956-802410
> Fax +44 (0)-181-286-4052
>
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