[c-nsp] Gigabit Interface Input Errors

[Gert Doering]

Hi,

On Thu, Nov 05, 2009 at 01:41:16PM -0500, Drew Weaver wrote:
> Does anyone have any tips on finding out what is causing it to overrun?

"Hardware too slow error" - packets arrive in short bursts at line rate,
and your router cannot handle that.

For example, an NPE-G1 will handle packets at, say, 300 mbit/sec if they
come in evenly spaced - packet<pause>packet<pause>packet<pause> - but if
1000 packets arrive back-to-back and then a longer pause, it will overrun
the buffers.

There's not much you can do, except "get a hardware forwarding box" 
or "just accept it, and only worry if the errors increase more frequently".

We do some of both :-)

gert
-- 
USENET is *not* the non-clickable part of WWW!
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Gert Doering - Munich, Germany                             gert at greenie.muc.de
fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de
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