Alan DuBoff writes:
> After line 115 in your capture file, is that were it drops carrier? Up 
> until then it seems to be talking to google.com, but it seems to get some 
> 302 returns, I think those are ok.
> 
> Not much I could see in a snoop file, seems the system log would be more 
> helpful, at least to possibly narrow things down.

The traces are hard to interpret, but (just for the record) I checked
through the kstats for the PPP kernel modules and the pppd user-space
logs, and some of the basic networking commands, and it's pretty clear
that the link itself (in terms of PPP and networking) is in good
shape.  I also had him try some unusual fixes (mtu tweaks and ACCM)
just to make sure that there was nothing obviously wrong at the serial
level, despite the clean kstats.

What seems to happen is that under some sort of stress (perhaps it
really *is* just HTTP traffic, but that hasn't really been proven to
my satisfaction), the link chokes up, and the only culprits I have
left are:

  - the USB subsystem
  - the phone itself or its configuration
  - the GSM network (always a dicey thing)

Given those, and my limited ability to troubleshoot the phone itself
and the telephone network (sigh), I pointed him here.  I'm hoping that
the USB driver has some sort of statistics that will show whether it's
performing correctly and perhaps whether there are flow control
problems.

Under other OSes (Windows and Linux?), of course, he reports that it
runs fine.

-- 
James Carlson, Solaris Networking              <[EMAIL PROTECTED]>
Sun Microsystems / 35 Network Drive        71.232W   Vox +1 781 442 2084
MS UBUR02-212 / Burlington MA 01803-2757   42.496N   Fax +1 781 442 1677
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