nanog mailing list archives
Re: L2VPN/L2transport, Cumulus Linux & hardware suggestion
From: Saku Ytti <saku () ytti fi>
Date: Wed, 8 Jul 2020 13:49:56 +0300
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
Current thread:
- L2VPN/L2transport, Cumulus Linux & hardware suggestion Jürgen Jaritsch (Jul 07)
- RE: L2VPN/L2transport, Cumulus Linux & hardware suggestion Adam Thompson (Jul 07)
- AW: L2VPN/L2transport, Cumulus Linux & hardware suggestion Jürgen Jaritsch (Jul 07)
- Re: L2VPN/L2transport, Cumulus Linux & hardware suggestion Adam Thompson (Jul 08)
- Re: L2VPN/L2transport, Cumulus Linux & hardware suggestion Saku Ytti (Jul 07)
- Re: L2VPN/L2transport, Cumulus Linux & hardware suggestion Adam Thompson (Jul 08)
- Re: L2VPN/L2transport, Cumulus Linux & hardware suggestion Saku Ytti (Jul 08)
- AW: L2VPN/L2transport, Cumulus Linux & hardware suggestion Jürgen Jaritsch (Jul 07)
- Re: L2VPN/L2transport, Cumulus Linux & hardware suggestion Mark Tinka (Jul 08)
- Re: L2VPN/L2transport, Cumulus Linux & hardware suggestion Radu-Adrian Feurdean (Jul 08)
- Re: L2VPN/L2transport, Cumulus Linux & hardware suggestion Saku Ytti (Jul 08)
- Re: L2VPN/L2transport, Cumulus Linux & hardware suggestion Valdis Klētnieks (Jul 08)
- Re: L2VPN/L2transport, Cumulus Linux & hardware suggestion Baldur Norddahl (Jul 09)
- RE: L2VPN/L2transport, Cumulus Linux & hardware suggestion Adam Thompson (Jul 07)
- Re: L2VPN/L2transport, Cumulus Linux & hardware suggestion Mark Tinka (Jul 08)