Re: L2VPN/L2transport, Cumulus Linux & hardware suggestion

[Saku Ytti <saku () ytti fi>]

On Wed, 8 Jul 2020 at 13:46, Radu-Adrian Feurdean
<nanog () radu-adrian feurdean net> wrote:

> 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.
> Not to mention hashing that almost systematically makes that all packets of the same TCP stream will be sent on the 
> same link in an LAG (also on most if not all ECMP implementations).

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.

However, as you state TCP will only ever see single port LACP interfaces.

-- 
  ++ytti