manage multiple modems

manage multiple modems

[Peter Gerbrandt]

Hi list,

I have a linux machine with 20 modems connected. This machine is supposed to connect to ~300 clients in the same subnet, but in different geographical locations. Each one has its own modem and phone line. The machine has to be able to connect 20 clients parallel.

Example problem:
I want copy some data from 50 specific clients. The machine should connect to twenty clients, copy the desired data, drop the connections. When a modem has finished it's transaction it should be connected to the next client.

My question is:
Can I get diald to work parallel with all the 20 modems?
Or is there an alternative way to this?

Thanks in advance,

Peter

Re: manage multiple modems

[Peter Gerbrandt]

Hi John,

> I have a patch for diald modem rotation. Is that what you want?

Maybe. Can you send me the patch?

regards,

Peter

Re: manage multiple modems

[John Hardin]

On Mon, 2004-01-12 at 07:25, pgerbrandt@bfs.de wrote:
> Hi John,
> 
> > I have a patch for diald modem rotation. Is that what you want?
> 
> Maybe. Can you send me the patch?

Oops. My memory is playing tricks on me. The current version of diald
supports device rotation natively - see the man page discussion of the
"device" and "rotate-devices" parameters.

What I did was add a patch to use UUCP lockfiles so diald and UUCP could
use the same modem devices cooperatively.

Sorry. Never mind my senile mumbling... :)

--
John Hardin  KA7OHZ                           
Internal Systems Administrator/Guru               voice: (425) 672-1304
Apropos Retail Management Systems, Inc.             fax: (425) 672-0192
-----------------------------------------------------------------------
 If you smash a computer to bits with a mallet, that appears to count
 as encryption in the state of Nevada.
                                               - CRYPTO-GRAM 12/2001
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Re: manage multiple modems

[Peter Gerbrandt]

Hi,

> Oops. My memory is playing tricks on me. The current version of diald
> supports device rotation natively - see the man page discussion of the
> "device" and "rotate-devices" parameters.

your tip was very helpful. But when the first modem has a IP connection
tap0 vanishes and the netroute is directed to ppp0, which is not what
I want. If I manually set tap0 up, redirect the netroute to tap0 and
request a connection it doesn't bring up a second IP connection over
the second modem.
Is this intended to be that way?
I tried to understand this behavior by reading the source but I didn't
really understand the connection between tap0 and ppp0.

Peter