[c-nsp] GigE and max usable bandwidth

[Sven Juergensen]

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Hi list,

does anyone have a clue about when a
gige link on a 3508 becomes saturated? Once
the throughput gets to about 650Mbps TX
and roughly 280Mbps RX, there are lots of
output buffer failures and underruns
showing up 'show int gig 0/2'.

- From what i gathered, this could be
because of the receiver being unable to
process the frames for some reason. The
receiving end however doesn't seem to be
too busy, so that kind of rules it out.
I played a bit with the flowcontrol settings,
to no avail.

Though I'm lacking values to compare, the
amount of broadcasts seem negligible to
justify this behavior - or does it?

Can like 1/3 of 1Gbps be used up by
the overhead ethernet causes?

Thanks in advance and best regards,

sven03

- --
Mit freundlichen Gruessen

i. A. Sven Juergensen

Fachbereich
Informationstechnologie

KielNET GmbH
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Telefon : 0431 / 2219-053
Telefax : 0431 / 2219-005
E-Mail  : s.juergensen at kielnet.de
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