Re: Carpet bombing, what's it look like now

[Vincent Bernat via NANOG <nanog () lists nanog org>]

On 2026-08-01 10:06, Saku Ytti wrote:

> > > IPFIX. But sampling rate is making things tricky, as very short term
> > > attacks are a thing.
> >
> > IPFIX IE 315 fixes this. It also makes it easier to grab any field from
>
> How does IE 315 fix sampling issues? You can use 1:1 with or without
> IE 315? Only thing IE 315 allows you to send sflow style raw frames?
>
> My issue with 1:1 isn't that my platform doesn't support it, it's that
> it increases backend costs in a way that I cannot justify.

I was focused on the very short attacks. The issue is not sampling, but 
the flow cache adding some latency, even when tuned down. That's the 
part IE 315 fixes: there is no cache anymore and the sampled packets are 
sent directly.
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