🚀 go-pugleaf

I'm using a MultiTech 1432 for my PPP connection and I've got the serial port
baud rate set at 38400 and with this, "ping" turns around in 250ms on
average.  I fixed the serial baud rate at 38.4 in "/etc/default/atdialMT"
(you will need to identify the equivalent file for your modem) in addition
to setting Devices and Systems. If the modems are attached to standard serial
ports, make sure that 16550 UARTs are installed. The 16450's limit is 19.2
with occasional packet loss, according to my observations, which results in
non-fatal tcp errors. I hope this helped.


Edwin Babadaglian
edwinb@panix.com

I have 250-300ms on my PPP connection with V.32bis modem.
My /etc/ppphosts is:

1.2.3.4 - host-ppp idle=15 rtscts ipaddr protcomp mru=1500 accomp VJ

---

I have an NS16550AFN UART on my modem.  That's all that's needed.
Make sure that your modem has commpression/reliable link settings on.


In article <30jtpk$2oa@bigboote.WPI.EDU>, tefler@bigwpi.WPI.EDU (Scott Salvidio) writes:
|> 	I have a PPP connection between two SCO machines up and
|> running.  The problem is that when I ping from one to the other, it is
|> taking 550 - 600ms.  I'm using two Hayes Optima 14.4 v.32bis modems,
|> and i'd assume that I could get at least 250 - 300ms.  
|> 	I have the rate in /usr/lib/uucp/Devices (and Systems) set to
|> 19200.  In /etc/ppphosts I have VJ, accomp, and protocomp all set.

-- 
					Leonard Primak
					CS First Boston

tefler@bigwpi.WPI.EDU (Scott Salvidio) writes:

>	I have a PPP connection between two SCO machines up and
>running.  The problem is that when I ping from one to the other, it is
>taking 550 - 600ms.  I'm using two Hayes Optima 14.4 v.32bis modems,
>and i'd assume that I could get at least 250 - 300ms.  
>	I have the rate in /usr/lib/uucp/Devices (and Systems) set to
>19200.  In /etc/ppphosts I have VJ, accomp, and protocomp all set.

>Anyone have any ideas?

Try mru=1500 and baud=38400.
-- 
David Fiedler  Internet:david@infopro.com or david@ost.com  UUCP:infopro!david
USMail:InfoPro Systems, PO Box 220 Rescue CA 95672 Phone:916/677-5870 FAX:-5873
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In article <30jtpk$2oa@bigboote.WPI.EDU> tefler@bigwpi.WPI.EDU (Scott Salvidio) writes:
| 	I have a PPP connection between two SCO machines up and
| running.  The problem is that when I ping from one to the other, it is
| taking 550 - 600ms.  I'm using two Hayes Optima 14.4 v.32bis modems,
| and i'd assume that I could get at least 250 - 300ms.  

| Anyone have any ideas?

1. In addition to all the other stuff already posted, look at the
V.42bis parameters. There may be a block size which can be set smaller
for better turnaround and larger for better max compression.

2. Repeat your question in comp.dcom.modems, we have some sharp modem
guys there who may know additional Hayes tricks.
-- 
Bill Davidsen, davidsen@tmr.com      |  C programming, PC based UNIX, data
    TMR Associates, +1 518-370-5654  |  acquisition, device drivers.
_____________________________________|______________________________________
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