nanog mailing list archives
Re: ECN
From: Toke Høiland-Jørgensen via NANOG <nanog () lists nanog org>
Date: Wed, 03 Dec 2025 13:26:17 +0100
Saku Ytti via NANOG <nanog () lists nanog org> writes:
Even if it is unicasted, performance is destroyed due to reordering. All modern TCP stacks use cubic for congestion control, which considers reorder a packet loss.
This is not quite true any longer. Linux implements RACK-TLP (RFC8985) which prevents short-term reordering (such as that caused by ECMP) from being interpreted as a congestion event. It seems Windows does too, these days: https://techcommunity.microsoft.com/blog/networkingblog/algorithmic-improvements-boost-tcp-performance-on-the-internet/2347061 -Toke _______________________________________________ NANOG mailing list https://lists.nanog.org/archives/list/nanog () lists nanog org/message/3IRDUGJTO4HTIZHHLUVYQJC6E2PCPPRT/