Re: explanation of TCPLoss counters

[Bernd Eckenfels]

In article <2b5e566d0809171014lb241f9am45250af2a366b128@xxxxxxxxxxxxxx> you wrote:
> TCPLossUndo counter is being incremented when some errors occur.

AFAIK this shows a reordering problem. (missing segments coming in late).
Are you using multi path, bonding or strange switch topologies?

The most reliable way to check out those extended TCP statistics is
(unfortunatelly) the kernel source. But that most often requires expert know
how on those algorithms (like selective acknowledgments, retransmits, reno,
congestion control, undo window reduction, etc).

That saied, it might be an actual implementation problem of this code path.

Gruss
Bernd
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