Re: L2VPN/L2transport, Cumulus Linux & hardware suggestion

["Valdis Klētnieks" <valdis.kletnieks () vt edu>]

(re-adding Adam's text that didn't get quoted, but matters)

On Wed, 08 Jul 2020 13:49:56 +0300, Saku Ytti said:
> On Wed, 8 Jul 2020 at 13:46, Radu-Adrian Feurdean
> <nanog () radu-adrian feurdean net> wrote:
> On Wed, Jul 8, 2020, at 00:09, Adam Thompson wrote:
> > > Good luck with tunnelling LACP, no matter what boxes you have - LACP
> > > has (de facto) hard jitter requirements of under 1msec, or you'll be
> > > getting TCP resets coming out your ears due to mis-ordered packets.
> > Errr.... sorry, but at the latest news, TCP was supposed to handle out of
> > order packets and reorder them before sending them to upper layer.
> Yes, however new reno and the like are tuned for practical Internet.
> Practical Internet has lot more packet loss than reordering, so TCP
> algorithm considers any amount of reordering a packet loss, causing an
> immediate resend, destroying your performance.

There's a difference between a TCP *resend*, and a *RESET*.

Triggering a resend on a re-order is reasonably sane, sending an RST isn't....

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