>>>>> "Jason" == Jason Thorpe <thorpej@nas.nasa.gov> writes:

Jason> On Tue, 12 Mar 1996 22:17:19 -0500 (EST) David Gilbert
Jason> <dgilbert@jaywon.pci.on.ca> wrote:

Jason> On my 4/260:

Jason> [ . . . ] ie0: DMA underrun ie0: DMA underrun ie0: DMA underrun
Jason> [ . ad nauseum . ]

Jason> Some (I suspect) timing glitch in the ie driver causes this.
Jason> The on-wire manifestation is a garbled/incomplete ethernet
Jason> frame.  Note that using DMA on the "si" driver makes it worse,
Jason> but *only* for the obio ie.  I've never seen these errors when
Jason> using the following combinations:

	It seems to have gotten worse.  I'm having trouble doing any
data transfer.  Strangely  enough, ping -f works fine (reports the
errors, though), but if I ftp, doing a 'dir' will just hang until it
times out... reporting underruns all the time.

	Now... I have access to a VME ethernet, but I would suspect
that there are quite a few people who don't.

	This also means that I have to give up tape access whenever I
use the net (since I don't have an old kernel with VME ie1 config'd).

Dave.

-- 
----------------------------------------------------------------------------
|David Gilbert, PCI, Richmond Hill, Ontario.  | Two things can only be     |
|Mail:      dgilbert@jaywon.pci.on.ca         |  equal if and only if they |
|http://www.pci.on.ca/~dgilbert               |   are precisely opposite.  |
---------------------------------------------------------GLO----------------