I'm having a strange problem with a ppp connection -- 
the connection stalls every couple of minutes and must
be restarted.

I have a standard RedHat 6.1 installation & kernel, no
other networking except ppp.  The hardware is a Dell Inspiron
7500 laptop, with a Psion Dacom Global Data 56k + FAX PCMCIA 
modem card.  (I have also tried a US Robotics modem card, with 
similar behavior.) Linux has been rock solid on this laptop, 
with the exception of this particular problem.

I'm using wvdial to start PPP and connect to my ISP, and 
the ISP dynamically assigns me an IP address.  The connection
is made smoothly and routing tables look correct.  Everything 
works great for awhile - browsers, telnet, ftp, etc.  Then 
all network applications stall.

I can still ping/rlogin remote hosts, and routing tables 
still look fine, so this is most puzzling.  If I restart pppd 
with wvdial, then things work ok again for a few minutes and 
then stall again.

The same ISP connection works fine on my SGI and Macintosh 
machines, so I don't believe that it has anything to do with
my ISP. My laptop is set up to dual boot, and I do not 
experience this problem under Win98.

Below are some more relevant details (config files, log files,
etc.), with sensitive data replaced by "****".

This problem is driving me nuts -- I can't be restarting 
ppp every couple of minutes, and I really don't want to 
have to resort to using Windows.  Any help will be *greatly* 
appreciated.

-Chris

----

Relevant RPMs:
  ppp-2.3.11-4
  wvdial-1.40-5
  kernel-2.2.12-20
  kernel-pcmcia-cs-2.2.14-5.0
  Netscape 4.61
  KDE 1.1.2
 
/etc/wvdial.conf:

  [Dialer Defaults]
  Modem = /dev/ttyS1
  Baud = 115200
  Init1 = ATZ
  Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 S11=55 +FCLASS=0
  Phone = ***-***-****
  Username = ********
  Password = ********

/etc/ppp/options:

  lock

The pppd commandline (obtained from /proc) is:

  /usr/sbin/pppd modem crtscts defaultroute usehostname -detach \
          user ******** noipdefault
                                             
Relevant portion of /var/log/messages, with timestamp and
hostname fields removed:

  pppd[1374]: pppd 2.3.10 started by root, uid 0
  pppd[1374]: Using interface ppp0
  pppd[1374]: Connect: ppp0 <--> /dev/ttyS1
  kernel: PPP BSD Compression module registered
  kernel: PPP Deflate Compression module registered
  pppd[1374]: BSD-Compress (15/12) compression enabled
  pppd[1374]: BSD-Compress (15/12) compression enabled
  pppd[1374]: local  IP address ***.***.***.***
  pppd[1374]: remote IP address ***.***.***.***
                          
--
Chris Malley
PixelZoom, Inc.             Voice: +1.303.494.8849
835 Orman Drive             EMail: [EMAIL PROTECTED]
Boulder CO 80303-2616

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