We have a customer running a DG box and D3 DG.

The customer has remote branches with serial devices (terminals and
printers running in each branch).



Some branches have 16 serial ports via a term server module of a cisco
2610 router

Others have 48 ports via a 3/com CS/3100 termserver.



The existing DG server creates remote ttys on booting via a
configuration file (vtc.addrs) from which it reads the parameters of
tty, ip address of remote termserver, and tcp port on which to
communicate. E.G.



/dev/tty02 10.1.10.1@2033 telnetout on on

/dev/tty03 10.1.10.1@2034 telnetout on on



The DG makes these outgoing connections via a pci telnet controller
(separate network card)



We then associate our Pick D3 processes with these ttys via the inittab,
one tty for each remote serial port. e.g.



p19:34:respawn:d3 -19 -t tty02 -y "9600" -printer



All this works wonderfully, however, we now need to change the server to
an IBM PSeries (RS/6000) running AIX.



I understand that the IBM does not have an equivalent of the pci telnet
controller.

Does anybody have experience of remote serial ports on IBM PSeries, is
there a method of creating remote ttys on the IBM?



Thanks



Stuart W


--
Posted via http://dbforums.com

Digi International makes a product called a PortServer II which is a similar
product to the one you're describing. They are stable, reasonably priced,
and easy to configure. For your higher number of ports, you can daisy-chain
a couple of simpler Digi Ports 16ES modules to the first PortServer II (up
to 3 with added memory on the first PorsServer II).

My recommendation is to setup the PortServers to automatically telnet in to
the RS/6000 and start a D3 process from the UNIX shell. This will reduce the
complexity of the configuration as well as the number of processes that are
running. It also eliminates the need for additional drivers, applications or
server-side hardware (other than the network card.)

Albert

"Stuart W" <member47131 (AT) dbforums (DOT) com> wrote

Hi all,

I was trying to do some research, and came across an interesting article
posted on IBM's web site that I hadn't seen before:

http://www-3.ibm.com/software/data/u...ec-summary.pdf

I found it interesting, and thought perhaps folks here might too.

Laura